882 vs 193 heads I am looking for an inexpenisve iron head to replace them with. I don't know about vortec casting numbers but I've always heard that they flow good and are about as good as it gets for stock heads. 50E valves: the casting number was 333882. As far as running it on pump gas,I would say no. 040 over, needs to honed and have a crank put in it. 94 intake valves and low rpm valve train. I had a set rebuilt then after rebuilding them i went with the vortec heads. 00: Make LTR/CID CYL Year Description Casting Part Cost; GM: 5. Oh and full length headman headers. just talked to the local machine shop guru and he said he would have to modify the head due to clearance issues. the engine is a 350 Steel crank, 4 bolt main, 9. This head was tested with the 1. 700 "or greater lift, and to get those high lift numbers it will be down on air flow in low mid lift range when compared to another head that was designed to allow rework to those greater high lift flow numbers. 72/1. 60") >GM 441 iron heads (actually flow better to . Now the 882 heads I had measured pretty large on the intake runners. I did build one 383 with the 193 swirl port heads for a friend. Description Professionally rebuilt pair of Small Block Chevrolet cylinder heads. 29% 125/109 87. Despite that MotorTrend has measured them (the 810 heads) to flow 146 Exh @. These heads are very similar to the 441 and 493 400 small block head. 3 to 1 compression. The 487 have 180cc runners, while the 461 has 160cc runners. This was due to the double heat riser The 193's are TBI heads (1987-1995) and have intake runners of arund 150cc with swirl port design with a 67cc chamber - basically first generation Vortec. New and improved cylinder heads for marine, boat applications. 8 hp 459. " Those head are fine for a daily driver, excellent torque, power and mileage. 4 hp - - - - - - GM LS-1 204/- 2. The TBI heads are way down the list as far as the bottle neck goes in power. On the plus side, the aluminum Corvette head offers a slightly better exhaust port than the older iron heads which helps produce The 193 heads are designed for lowend torque. Top. 02" Intake/1. 882 heads were designed by Chevy to be used in 350 ci and 400 ci engines. 8 hp - - - - 164. They are more preferred over the 882 head due to their heavier casting. The heads on my truck are of the 882 variety which need will need a good cleaning and re and re. I remember chuckling about the fact that the 882 flowed pretty much the worst of all of them, but people still bragged about having "882 Corvette heads. 8K views 2 replies 2 participants last post by Sean’s73novacustom Jun 18, 2022. 5 with a cast iron head and 10 to 10. 50 E valves: the casting number was 333882. 94 valves flow almost I picked up my free 882 heads from my buddy today. ) 2. The only problem that I see is that depending on the pistons you have, you compression ratio is probably only going to be around 8 1/2 to 1 Thats fine for a mostly stock engine but with a smaller chamber head like the ones that used to come on the 327's you sbc 193 heads. Drivers side 193 head is Junk. 00/1. 55 : Chamber Ecir68 they are prone to cracking between the valve seats just like any lightweight smallblock head. Many times the nicer HP 882 heads can be picked up cheap as people don't realize which version they have. The valves are larger and the flow numbers at 0. The 882 castings were hardly what you would consider desirable. 461 vs. We did several thermostat to weed out any outliers but the results were consistently the same. The 882's arent the greatest head but are the better choice of the 2if they arent cracked. it is common to use up to . 94 intakes. 94 valves and unported probable only 20 to 30 hp difference. Re: 441, 882, 487X VS EQ IMCA Stamped Spec Head. 50 stainless valves. 55 on the exhaust without fitting larger inserts, personally i would stick with the 441's, because like was mentioned 40 hrs worth of port work on 267/305 heads would cost a buttload of money if you can't do it yourself. Hey there, recently I had the head on bank 1 of my Chevy 383 Stroker decide it no longer wanted to hold any oil in it. Those heads have tiny little 155 cc intake runners and will barely eclipse 200 cfm. but thats just me, it might work for anyone else. Richard Holdener · Original audio the size of the combustion chamber ultimately changes the compresion ratio the 76 cc will lower the comp. A. run the 882 heads (please dont bash my 882's here - we all cant be running vortec heads)using long tube headers, hydraulic lifters, roller tip rockers and a comp cam 12-238-2 with the following specs: Duration at 050 inch Lift 218 int. 191 and 193 heads. alot of people cant afford the aftermarket heads and i dont think i would buy them anyway if 300-350 hp is your target. Generation IV Internal Engine - 821 vs 823 Heads - Forgive me if this has been covered before as I am certainly NEW to the LS-Scene with a 2013 Caprice PPV 9C1 L77. 7 V8 C#624, 882 Perimeter Bolt Assembled Cylinder Head. 8 – 173: V6: Right Head – – Sending Unit Below Freeze Plug – casting # located above spark plug holes on exhaust side: 523: 083/193: CH20173: $250. thats just my . If you are set on the 882s, get your self a performer dual plane intake, ~210-215@0. The L82 came with 882 cast iron heads with OEM screw in rocker studs and guide plates. however flow flattens out from . the intake ports on the heads are MASSIVELY gargantuan. Bigger ex. Q-Jet vs 2G! Ported 882 Heads! Or. May or may not have big valves. I am lookin for some 993 heads because my machine shop guy says thats the route I wanna go. They are excellent for what they were designed for, hauling the family on a road trip or running to the grocery store or getting grandma back and forth to bingo. These heads with a flat top piston will come in around 9. pcesak Discussion starter. I want to run 350-375 hp on pump gas and keep C/R at 9. I would take a pair of 193s over something like the 882/624/993 casting any day of the week. Round push rod holes. Post by IMCADW » Tue Feb 14, 2012 1:09 am. To many people read to many magazines the fact is these heads were used in 2. The speed pro pistons were listed with a 9. The Eagles flow what 260 cfm. 882 heads 11-11-02 08:48 PM - Post# 135201 In response to IgorT. The Bad News; these heads are crack prone!:roll: Chevy '882 CCM 151/59 1. You will still be close to 10:1 SCR with those heads combined w/ flat top pistons'but'still a lot better than the 081 heads. 9 at 110 mph. 5:1 or below for pump gas & iron heads. a good average aftermarket performance head should flow about 250 cfm at . 7 Now the 882 heads I had measured pretty large on the intake runners. 06-10-2005 05:59 PM #3. 5. I *believe* 210hp heads are about 70cc, and the 210hp 327's was only like 8. Thumper cam, street dominator intake, 882 heads and powerglide is a recipie for a car that is slow AND gets terrible gas mileage. 20% 175/136 77. True, Most early 882's were equipped with 1. C4 Tech/Performance - L-98 cast heads vs aluminum - Let's say I have an 89 Trans Am GTA and I wanted to install a set of L-98 aluminum heads from a vette. I paid about $360 a head, ready to install. The aluminum L98 heads (113 casting) are equal to the iron L98 heads on the int, and much better on the exh side, and slightly better than the 193 exh as well. the crank was shot too as the Original 461 camel hump heads have smaller runners than the 487 heads. 000/1. They are both big chamber smog heads that were well-matched to the 150-190 hp engines they were installed on originally. Performance. 99 For any old Chevy head they need to be older than 1970 and not more than 64 ish chambers to even be considered. I am not a professional, just trying out a little bit of porting. What are the 882 flow numbers The casting at the spring pockets are different so the pockets are not as deep as the exh pocket on a 193 head. 5 rockers . IMCADW. 95" sensor with 0. 5-1 compression or so. J. 10% 419. The heads you have now have big chambers and the tiny 1. 88bluestar Pro Posts: 406 Joined: Sun May 21, 2017 11:39 pm Location: Re: SBC head ? Post by 88bluestar » Sat Sep 18, 2021 9:17 pm. 480 lift cams with 882 heads, use the Z-28 type valve springs, watch for retainer to guide clearance, most will clear if you use an umbrella or o-ring type seal, do not use the tin shields or valve rotators on the springs. this Edelbrock Performer. better flow, better chambers, after modifying the springs you can run a higher lift cam. Im not real big on that cam either. I'm happy with the heads. Go here to check casting codes. C3 Tech/Performance - 882 vs. then went to low mile junk 82' vette heads because my 78' nova was my only car in HS and shortly went to replace them with Theported (stock) cylinder heads offered by Power Heads were far fromexotic. 600 lift On this day of testing back in 06 I flowed 3 heads, #1) a HO head # 14101081 in used condition and cleaned up for testing. keeps the coolant bulk temp at that compared to standard thermostats also rated at 180 keeps the bulk coolant at 193. Granted, they'll be small, like a performer or dart iron eagle 180, First off 882 castings are the old style "heavy weight", 76cc combustion chamber (port size is in the 160cc range) 350 and some 400 stock cyl heads. 94" Intake/1. 400-inch lift are almost identical. rejectparts Discussion starter. If there is a difference, is it going to be $1500 worth of difference? Performer RPM Air-Gap Intake and CompCam Thumpr CCA-CL12-602-4 295/313 is the rest of the set-up. The 882 castings had a double heat-riser passage [single on the intake side, double on the exhaust side] and were prone to cracking because they ran so Anyways I live in Western Canada and the 2 most affordable cylinder heads by roughly $350 are the Dart SHP 180's 64cc or the Edelbrock E Street 185's 64cc. 80% 180/147 81. 8 – 173: V6: 83-93: Fuel Injected – Cast Iron: 884/879: CH20134: $240. There's not a LOT of difference there, but I want to mention it since some of the electronics had minor changes in 1994/1995 and the blocks were supposedly cast without provisions for a roller cam. Thats to much for a mild cam and pump gas. i recently built an engine using the same rotating kit you have except with a 5. 624, or 882. They have large chambers 76 to 78 cc. 364/2. the trouble i ran into was needing a bore job and the cost for all that plus installing cam bearings, hot tank, deck the block, was $250. 5-9 to one comp. Depending on the cam, intake, pistons, and headers you run, you might get up to All the research I did on the X head said it was the same with a bigger intake port and 2. But head replacement can get you into intake to head bolt up issues and rocker arm issues. have a port job done and the 2. I don't have any rules to go by, but the topic fit what I have. At this point, I bring only a few questions to the table. valve guide inside the port. I have built several 350's using Dart's Iron Eagle 180cc head with 64cc chambers and 2. Port matched and upper port smoothing along with simple bowl work and a good valve The 193 head does not simply bolt to the intake you have on the 882 headed engines. 00: GM: 2. It will go faster. Exhaust port shape on Chevy small block heads confuses me. As already referred to, they are highly prone to cracking in critical places, and do not take kindly to port work as a result; their combustion chambers are a cavernous 76cc, and leave you with a compression ratio way short of anything resembling performance; and their 258/882: CH20133: $240. this gives me more time to save some cash for extra goodies, plus us Marines dont make a These types of heads will have 3 factory-drilled holes on the driver side head, and up to as many as 5 holes on the passenger side head. 88bluestar Pro Posts: 411 Joined: Sun May 21, 2017 11:39 pm Location: Re: SBC head ? Post by 88bluestar » Sat Sep 18, 2021 9:17 pm. Here is an area where there is a tremendous amount of potential for success and also failure. The 96 and up use the completley different L31 Vortec bolt pattern. So is the Block. Many classes of dirt track racing are restricted to these large chamber heads and the racers are looking for this casting number specifically. CHRYSLER; Mercruiser GM 350 5. 882 SB Heads VS Dart Iron Eagles. There's a company remaking 461 heads cast in aluminum, and with larger 180cc runners. Both are shown to be 1/1. Designed for 1987-1995 fuel-injected models, these assembled and rebuilt cylinder heads enhance airflow and efficiency, ensuring optimal engine function. 462'' Intake / . In my removal of the L77 engine in my new-to-me car I am learning the differences and similarities as I go. it is one of the worst flowing SBC heads ever made. your building a budget small block chevy what heads should you be looking for and what to stay away fromsee part 2 http://youtu. 882 20%-30% I use acetone to clean up residue between tests. They are already set up with 2. You will gain a TON of power between those two heads. Save Share The first of these is the aluminum L98 Corvette head casting, produced between about 1986 and 1993. As compared About 10 times thinner than a Pontiac 400-455 Engine, Olds 425-455 & 366-427 Tall Deck, & Musclecar era 1965-1974 BBC engines. if you have the 487 heads use them, they are old style castings, heavy, but watch the valve seats. /270 exh. 12% 339. 00 on the intake side and 1. Cam and intake will have a major impact on the end result. Price $429. 487x heads flow the best out of all the big chamber medium valve heads (1. even with 8. hydraulic 260-270 dur 470-480 lift cam with Or a set of angled washers made that mate the difference between the head bolt lands and the bolt heads. P. I was told they are made by Dart. 355", 9/1 comp flat tops, . Much better head than the nay Not sure of the L-82 option on heads, but the 882's are areally a smog head and from what I have heard, they are prone to cracking easily. Would I gain anything by doing this or is it just being able to say I have aluminum corvette heads on my GTA. I have never flowed the 305 head either, but lets guess it's under 200 cfm, which is pretty safe I think. Would it hurt me by running the 195cc heads over the 180cc heads? I just don't want to buy two pair of Afr heads at the price point they are if I was to go 383 down the road and I already had the 180cc head on my 355 and needed the 195cc heads for a 383. 480 with a 750 cfm and single plane. 50" exhaust valves but the 882's are the first of the 'smog' heads, they flow well and are not the 'lighter' castings, but it does have the larger 76cc chambers, which means I will barley break 9:1 compression ratio with the thinnest of head I would not use the -896 heads on the 350, on the 283 yes. 7 350 V8 Cylinder Heads TBI (191/193/217) | 1987-1995 Fuel Injected | Rebuilt Upgrade your engine performance with our GM 5. You need a very healthy cam to pull it A really good set of ported 292 heads with a 2. it doesn't matter as long as the port isn't larger Rebuilt 350, flat top pistons, 882 heads, street dominator intake, holley 650 carb, but i went with the comp thumper cams and a rebuilt 700r4 with alto red clutches. 71% 204/143 70. 882 SB Chevy heads. Vortec - I've been told my '79 heads arent' going to cut it in terms of their power potential. i will say, roller tipped 1. years ago i ran these 882's in high school and they worked good after a full comp port/polish, port match and 3 angle polished valves, they were good for 330hp , good enough to beat many 5. There both in good running condition. The head casting number was 3973487X. LD L05 Piston HD L05 Piston The difference in the heads between LD and HD is the exhaust valves and the valvetrain. Greetings and Happy New Year from the new guy to all of you out in hot rodder land. They were fitted with either 1. 7 rod. Reply With Quote. 2/122. 050" duration cam, and forget about a lumpy idle sound. 882's are a good head but you have to watch for the cracking problem [ November 24, 2002: Message edited by: BOBCRMAN@aol. minimum port cross-section. 89 intake valve over your ls1 head having a 2. The Vortec heads are a little bit lighter than the older heads and have a “kidney” or yes I thought the same thing, its got to be a TYPO, or he means 882 heads 882 heads are THIN castings that provide about average SBC OEM performance. Alum. So much to do, so little time Top. 94 Heads, i am hoping to make 350-375HP with them. It will make good power up til 4500 or so. The Vortec head uses a different intake bolt pattern from either the 882 or the 193 so all the work for the 193 remains unique effort to that problem that has no other use. Good for a low rpm truck applicationand thats about it. In stock form these heads are nothing special—just light. There are a few different 882 castings out here. Is the trade off going to be bad to run the 195cc heads on my 355 compared to the Robert, The heads are not "junk", but they are nothing special either. 60") Here we go again, Put the humps on if they are in good shape they are far better flowing than the 882 castings. Well, there's good news and a little bad news about these heads! The Good News; Chevy used these heads from 1976 to 1987 on 350 cid engines. preferably a torque engine. BUT I have in fact seen & owned them Cast as 882 exact same head as a 881 , late 74 882 issues had the good I have a set of Chevy heads with a casting number of 333882, with 1. Don't bother spending any money on them. 480 lift with 230/230 Duration at 0. With a simple gasket match the 882 will flow better than either one of the others. com ] Not knowing the exact specs on your 383 its hard to be accurate but most 383s with flat top pistons will be around 10. and depending o your goals the 175cc heads may be too small for your application. shorter version: ill be getting a 400sbc that is . They run out of breath by 4500 rpm,so,choose the rest of your combo to match that power band. Do I just keep the im with your builder. They are not exspensive heads. They are priced good compared to the cost of doing these upgrades to a set of heads. Those were great heads in their time, but pretty constricted flow compared to almost any SBC head today. My question is what heads would be better for my car 882 or 193 swirl ports? I hear 882 flow better but have a 70 something cc chamber so it has low compression but 193s have nice torque but suck after 4500rpm but will increase my compression. top of page. And likely better than the other assembled heads that you listed, that When I install 882's I use the intake manifold restrictors on both heads, this helps reduce the cracking of the 882's! It's been maybe 10 years since Hot Rod Magazine did their "Head of the Class" article on small block chevy head flows. Although they won’t accept valves larger than 2. 80-sq. 60" Exhaust Valves, all these heads had 76cc combustion chambers. 480/. the 882 heads were installed on the 350 ci. This is thread for more info on the Caprice Q-Jet vs 2G! Ported 882 Heads! Or. 94-1. 94I and 1. As for an estimate of power I can't say but if the vortec heads work well with the bottom end it has its a safe bet that it will have more power than it did. Is there any difference in valve springs and rocker arms between my current 882 heads and the 336? How are the 336 in general? would it be a good upgrade over my from my understanding 882 heads are good for boat anchors and door stops. without knowing General Chevelle Tech Area. 025 deck. 76cc combustion chamber. And I have some 993 heads. 55 posts · Joined 2018 Add to quote; Only show this user #1 · Feb 17, 2019. Too bad shipping would be so crazy shipping those headsI need another 1. 550 65 - 123/108 87. Before, I ask them, let me throw out some info on what I am doing. 5 with an aluminum head. 500-inch lift the flow is up 15% over the 882 head. Jump to Latest 11K views 8 replies 7 participants last post by andybird Mar 28, 2003. i had a set of 441's that were 1972 models and they had 1. One big drawback you have to have a different intake. and they are cheap compare to other aftermarket heads. Run em. This needs to be 8. So I got some 193 heads. The L31 Vortec heads have larger ports than the older Gen I cast steel heads, so they outflow the older heads. Another casting difference is that there is way more meat around the exh. The 193 heads DO NOT flow as poorly as most would make you think when compard to other stock heads. I have a 350 4 bolt main block that was made between '77- '79. i have two options: run a set of vortec heads on the 408 with the stock dished pistons. You really need to cc the head chambers to see what they actually are. I`m just going to do some bowl work,narrow the guide bosses and gasket match them. 45 posts · Joined 2021 Add to quote; Only show this user #1 · Jun 18, 2022. Advertised Duration 262 int. 39% 423. It gives around 11. Save Share ive used 882 76cc heads ported and then went to 416 305 heads cut to 1. The 882 is a smogger head with 76 cc combustion chamber. The port flow numbers are roughly equivalent to a decent set of older iron heads like the 882 or 441 heads. The car has run 11. Oh yea, I remember the big casting in the exhaust port. 60 valves. has dish pistons right now and 882 heads. yeah, sorry for the long post. And the 113 castings have a revised exh port shape than the 083s so that explains the exh flow difference. I'm just curious what the threshold would be before they were pulled Mine was first -461 big valve heads and later medium valve -041's before I stopped driving it when I got my '87 Chevy Sprint ER 3-banger, 50mpg corn-popper commuter car. Heads. ap72. The 882 heads were installed on the 350 ci and 400 ci engines (400 heads had steam holes). The 882's are actually a thick head casting, but are very prone to cracking between the valves in the 2 center cylinders. 5 on an open chamber cast iron head just won't work without a lot of octane booster and race fuel. The down fall of the 882 in my book is the exhaust port in the bowl area. 480'' Exhaust, and 111 lobe separation. You may want to re-think this a bit. Many LATE 74 Z28 and Corvette L-82 applications used a Hi performance cast version of the 882 head . the 882 heads were installed on the 350ci and 400ci engines (400 heads had steam holes). So i changed the cam to dur@50 230/230 valve lift . Video. Keep 882 heads (already have crane springs), add an aluminum intake manifold ($140), 8" harmonic balancer ($60), new gasket set ($40). The "Chevrolet Small-Block V-8 Interchange manual" by David Lewis states as follows: a lighter cast head was released sporting 1. . 50" Exhaust, or 2. again really depends on if your after more HP at top end or more torque at street rpms where the smaller runners do well from what Ive read. Any thoughts on these 2 heads? See the Keith Black web site, and there are others. 05" valve and a port wall thickness left that will hold up in use will net you some 265 Intake cfm@28" way up at . /224 exh. Just a set of decent small block heads. The 86 thorugh 95 heads use a different bolt angle alongside the plenum. Just sold an extra set of the good 2. 94 valved 993 head, and can always add to my stash of 882's. 450" lift cam, 882 heads, 2 plane intake, I was just working on some 882 heads, and was looking for input from others that have worked on them. Both castings make two different part numbers one with the center intake bolt angle of 90 degrees to the port face these fit 55 through 86 intakes; then there is the 72 degree bolt angle on the I have both a set of 624 heads and 882 heads sitting around in the shed and I wanted to get everyone's opinion on whether or not either the 624 or 882 heads would be a worthwhile upgrade from the dreaded TBI heads in terms of power. Not worth spending a dime on if you are shooting for more than 275 hp. The exhaust crossover was redesigned and may contribute to the cracking between the center exhaust ports that these heads are prone to do. 500-Pipe 76 70/59 84. Home 882's are an OK performance head, most SBC head castings are not as good as the 882's performance, but there are several castings better than the 882's. What's the highest lift cam you guys have used with "stock" 882 heads and pressed in studs?. With prices to rebuild stock heads increasing all the time these heads would probably be one of your better investments. What's the difference here ? Also how do these fare with IMX 890 (11/11r/12/12r/Nord 3/Nord CE 3) and it's counterpart LYT700 ? regular chevy heads vs tbi chevy heads HELP Whats better . In your case a pair of MAGNAFLUXED 882's would be the best base for a street head. I'm going to use the 882 heads as the first example. The head that is usually refered to as the "Vortec" is the 1996-1999 with 67cc fast burn chamber. The bump in compression will help also probably a 20 to 30 h. 6 rockers on a #193 head is kind of a waste of time and money. 5 CR if i remeber correctly. I believe 193's are a swirl port TBI headnext to impossible to port and dont flow for crap. 5 to 1 with a 64cc head. and 400 ci engines(400 heads had steam holes). Those 882 heads at least the ones I measured had the largest volume runner of all the smogger era heads. 55 : GM Vortec Bow-Tie Large Port PN# 25534431 Cast Iron 2. With 882 heads (76cc chambers) it ran low 14's in the 1/4 mile with speeds in the low 90's. 400 inches on. Enough to feel a Porting small block chevy 882 casting cylinder heads. You do not have the required permissions to Most Practical Cylinder Heads for 383 build up. 94 valve ported and didnt see any gain in performance, just the same. They are light head castings and are prone to cracking. 450" lift. The 336 heads have been ported and polished, but not recently, they came off a monte carlo, that had a 350 supposedly built for the strip. At 0. An 882 casting is usually OK for unleaded gas. The 882 is a lightweight casting but I've actually laid them both on a bench side-by-side and the ports and chambers are as close to identical as you could ever get. but the cost of the new vortec style intake could bust the budget, and the the rocker arms need to self aligning style. Its not super big power but decent. The angle the center pair of bolts on each side of the plenum makes a different angle The OP said, "I plan to use them on a daily driver pickup truck. The 882 castings are truck smog heads and are junk - the port and chamber layout is horrible, and they always crack. Buy a set of used Vortec Heads at the local junkyard ($210), Vortec intake manifold ($140), center bolt valve covers ($40), balancer & Gasket set ($100). But compared to modern heads, such as the L31 Vortec of 1996 - 2002 production and currently available from both GM and the aftermarket in iron and aluminum;these old heads cannot compare even when heavily reworked by expert porters. If both heads are 1. They are crack pronemore so than any of the earlier 76cc heads. Save Share Reply Quote Like. I suspect the 336's (they were for 1971 cars) have smaller ports as that aera of the smog laws were not nearly so bad as 1974 when the 882's came out. The flow numbers on 882s are not much less than small valve hump heads. 055/1. Swapping to a set of box-stock Dart IE 180's (72cc chambers) put me deep in the 13's at nearly 100mph with no other changes. 50 E valves. 50 or 2. 00 valve. 60 valves reground and a set of valve springs that match your cam. 7 350 V8 Cylinder Heads TBI. If you could use a small chamber I would say 041 heads which are very popular with the factory casting crowd. I can pick up a rebuilt set of 624 heads for $100 through a private sale which I could then just throw on the truck and drive. Guides were fine. Just something to think about before buying a used set. #2) a 350 smogger with fresh v/v grind # 9889338, (very similar to the 882 casting,) and #3) a TPI/TBI 14102187 with 3 angle v/v grind. 8 μm pixel size and 8. 00in valve installed and you got a good flowing head and higher compression for cheap. and the 64 cc will raise the comp it just depends on the pistons, head gasket thickness and if the block has been decked or even if the heads have been decked,or if the piston is in the hole or has been zero deckedit all adds up in the end if i recall correctly the difference in flow isnt a lot. One of the rocker arms in the head is broken. But I have two sets of cylinder heads, 882's (casting# 333882) and 193's (casting# 14102193). 455/406 Don't know about 336's but 882 flow pretty well. 193 casting like this. -juhana. NEW CYLINDER HEADS. 5:1 compression ratio with these heads, comp cams . These castings are available from just about any Cstruab. put a set of 820 heads on a 427, 11 and ahalf compression, 219, 188 exhaust, actually had to grind down in the middle a little bit, pistons were touching, heads ended up with 132 cc:s, motor ran like a banchee, in a 18 ft rogers bubble hull, turning over 10 grand coming out of the hole, never blew, judson masingale in houston, did the machine work, i did the porting, Re: 336 vs. Are the castings different? Are the chambers smaller While that is a good price on those heads, I don't think they would do you much good on a 327. 2. unless you run guideplates Description GM 5. The 882 was #5 of the five castings tested, and casting 041 was the best. Testing was corrected to 28” and done over a Some of the cast iron heads with the best flowing ports from the factory are (were) 441, 041, 882, and 641 + 642's (both of the last 2 being the once popular "fuelie heads" from the 1960's which came on the fuel injected Corvette's). p gain will feel much better seat of the pants wise. Just for the fun of it I picked up a 94 chevy truck to The 624 heads are among the worst of the worst. Butyl Acetate 0. 60 exhaust valves in them. 02 cents. Total $200 2. Just as a comparison it went much harder than an identical 350 running the more common 882 heads. Heads have the center bolt through valve cover. Some of these even had 2. There's several more but I'm just going by memory here. Sean’s73novacustom Discussion starter. can my heads except this amount of lift and is option 2. 2 mm diagonal. Furtherore, I am leaning towards on older pair of used 882 heads, w/ no work done to them. 02/l. 50 valves and 76cc chambers- even the little tooling marks here and there are identical. Types of GM Vortec Heads. Stall is between 1700 and 2000. The main difference between the 882 and 993 heads in regards to cracking is the 882 feeds the exhaust crossover from both center exhaust valves as opposed to the 993 which feeds the crossover from just one. 60 valves and then I heard people say they had the X head and they The 193's are TBI heads (1987-1995) and have intake runners of arund 150cc with swirl port design with a 67cc chamber - basically first generation Vortec. I know this is a "Not all late 882 heads were created equal. my uncle gave them to me and he did the stone 3 angle valve job. That additional heat concentrated in the center of the head is the main reason for the cracking problem. You will have to shim the exhaust spring seats,Check for stock rocker to stud clearance, Brown's '90 12-ton truck heads should be a No. Granted, I'm not looking to make over 300hp anytime soon so just a little bump in power would be cool. A lot depends on the cam & the point @ which it closes the intake valve which will determine your DCR,or,actual compression ratio. If you look at a typical pre 1996 head compared to a 1996 and later the differences appear minor but the effect of the burn is huge and the reward is manifold with improvements to torque and power as well as fuel efficiency and emission I didn't post the original question. 02/1. They can be ported with success, but you might be able to call it a wash if you sold them and bought something a bit better. I open up the intake port, exhaust po The vane in the valve pocket of the 193 can be ported out; this makes what essentially is a cast iron L98 head which actually exists as castings 14096217 or 14101083. I have read several articles recently where folks GM 882 IronThe smallest of the GM heads we tested at only 151 cc, the 882, turned out to be the best-flowing of the early iron heads. 2 to 9. 882 vs 492 heads (kinda long) Jump to Latest 21 - 31 of 31 Posts. i would say you'ld be okay as they have 1. in. 10098 posts · Joined 2005 Add to quote; Only show this Whatever you do go with I would stay with 64cc versions as 60cc will be too high a compression ratio with your l82 pistons as far as I know. It appears the Darts flow a little better and can come with better springs for the same price. Casting number is 191 or 193 on these heads. 50 valves. Cylinder head porting has been an over-used term for the last 20 years, and despite all the words written about this process, you can’t go more 1985-earlier were pushrod guided, either by slots in the head casting itself or slotted steel guideplates. 050'' Lift:218° Intake / 226° Exhaust, valve lift with 1. 193 posts · I am using 882 heads that I had rebuilt and ported some years back before I knew about head cc. You want a set of 487x heads if you can find them - larger intake port. spend your money on nice 3 angle seat ond clean up the pockets yourself ( minimal labor and rewarding ) and and buy a set of 1. Edelbrock’s intake-port philosophy emphasizes port velocity for its mild street heads, and the Performer is the entry-level head in this category with a 170-cc intake port with a rather small 1. 02 valve form up to 375 horse stock. 5K views 5 replies 5 participants last post by BogiesAnnex1 Feb 18, 2019. C1 & C2 Corvettes - Are 3973487X heads any better than other large chamber SBC heads? - I pulled the intake and valve covers on my 72 C10 to fix some oil leaks. the 882 head was also used on the 330-hp 350 and the 400 small-block. i guess what my question is. The 200cc heads with the 64cc chamber. Do yourself a favor and sell those '882' heads to someone else and buy a set of aftermarket heads ready to bolt on that will make the power that you are looking for. 60 GM Vortec Bow-Tie Small Port PN# 25534421 Cast Iron 2. 02 etc they will be better than what you have now. should you just grab a junkyard L31 Vortec 350 to start with? What day you?. I've decided I don't wanna go through the laborous and cost-intensive process of casting or machining it to be where it used to be, and have instead decided I want to replace the heads entirely. a 350 smogger with fresh v/v grind # 9889338, (very similar to the 882 casting,) and #3) a TPI/TBI 14102187 with 3 angle v/v grind. 659 posts · Joined 2002 Add to quote; Only show this user #3 What actually is the difference in these sensors? IMX 882 (Ace 3V-China/Nord 4-global) & LYT 600 (Nord CE 4). 6 valves and screw in studs and guide plates. A good head for a 350 that is affordable is a dart 180cc iron eagle then go buy your own parts, manley street flow valves or your stock 2. The 882 heads had double heat-riser passage and were prone to cracking because they ran so hot. 94 I and 1. 882 heads get a bad rap, and for some reasons rightfully so, they actually flow pretty well for what is otherwise considered a smog head. years ago chevy made almost exclusively, just standard strait plug head designs, as technology improved, it was found that getting the spark plug as close as you can to both the combustion chamber center and the exhaust valve helped power, as the technology advanced the later design strait plug heads also had the plug location moved, so the original advantage for a mild street engine wich heads would you choose 882 or 487 ? I have both and plan on a mild porting, the motor will end up in a t-bucket I'm planning to build. The 882 head is the most produced chevy cylinder head over and above all other casting numbers. Up to this point the 882's flow as good or better than >L98 aluminum heads (actually flow better to . " I had a set of 487X heads on my '73 Hatchback Custom 20-something years ago, which I 193 Swirl Ports have a 64 cc chamber where the 305 heads usually are around 56 ccs so you'll give up some compression all other measurements being equal. The used heads out there can be almost 10 years old. 67% 219/172 In 1975 , a lighter cast head was released sporting 1. They yield average flow numbers, but respond to modifications just like any other small block head. they are the preferred head to use out of the factory open chambered small block heads, IMO. Trees . They were produced in the millions and if you are rebuilding a 70's era 350, more than likely it will have a set of these heads on it. 458 Chevy LB4 Syclone N/A - N/A - - - - 165/119 72. This is the first aluminum head in this small-port aftermarket category. The reason that the earlier iterations of this engine cracked was due to the fact that they ran really hot. 1 The vortec head is a better flowing head than the 882 although to be used with that cam they will have to be machined to handle over . jvsapp. I have made 330 hp with a set of stock heads. 882 and 993 heads are so remarkably similar, you can mix and match them and never know the difference. Now Ive seen combos over the internet using 882 heads/ 383 stroker with similar cam specs And im finding numbers that are much lower. The flow numbers stock vs stock are obviously night and day difference but these 882 heads have been worked over. talked to a buddy selling some cammel humped heads for 200 bucks so i might pick them up , send them to the machine shop and tell them to taked their time. Your going to see anywhere from 50-80 HP, or more, increase as a wild guess bolting on those heads. The most common dimension include: 3 5/8" between the top 2 drivers side holes, 3 1/2" Obviously, a three-angle valve job would have improved the flow for these heads compared to the iron heads. the 1. Some of them are from 3/4 and 1 ton trucks a couple of hundred thousand miles and run hot they can have cracks and worn out guides. 60 valves, screw-in rocker studs, and pushrod guideplates. The 882's are easy to crack. I'd like to try to make 375-400 fwhp. 50) these are highly sought after and would give you a small performance boost over your 624 or 882 heads. 94/1. Ranging between 300-/350hp/ 330-370tq. 60 Pro Top Line Pro Lightning 200. 940/1. The head that is 882s could be called the best of the worst. For instance 333882, 3238882, etc. 7 hp 206/145 70. CALL NOW (888)531-5464. 7 hp 205/144 70. 60 valves, and were The proof will be in the time that the heads last, but for me the AFR heads have significantly better quality control than the Dart SHP's that I ran before. What are you plans for the heads? The 993 heads were used in 72-73 Chevy 350s, many of them were the 250 horsepower version. 0 mustang gt's! but one did crack months later. I used the DART SHP heads. 72% 1. The 882 castings had a double heat-riser passage and were prone to cracking beacuse they ran so hot. I have a good 1980 K blazer engine, 3970010 4 bolt but I can't see wich heads are on it, they are the original from the truck, they are the ones with the sodium exhaust valves, are they better than the ones Those heads (882) will make the power your after but they are junk, anytime you have a head that the heat cross over gets into both exhaust ports it not a good ideal, the 441 head would be a better choice. This head is very similar to the 882 head tested earlier. The slight differences I saw were the Summit heads have a little larger intake volume (175cc compared to 170cc) and the chamber size is slightly larger (67cc compared to 64cc). 50, 600cfm edelbrock carb, Performer RPM intake, headers with Flowmaster 40 series mufflers heeelp meeee search my post for heeelp mee and i talk about my 400 and my tale of woe. First: What ports are in om my motor, a 1992 Chevy 350 gen 1 small block w/ swirl port Put a good gasket between them and retorque until the gasket stops compressing and you' be fine. The 882 heads are smog heads from '74 to '80 and not very well regarded, but neither are stock '85 heads - if you can find out more about the 882's they may be better than your stock '85 heads - ie not only polished & ported but if milled so they will give higher compression and if valves were changed to 2. Some are supposed to flow good but some not, that probably comes from the 70s casting techniques. The specs are @5500rpm 390hp/ 4500rpm 412tq. Al Covin 's book CHEVY BY THE NUMBERS notes/verifies this oddity of the 881 & 882 Castings being excactly the same late in the 1974 year . I found the casting number at Mortec, which said the heads could have either 1. The issue is that everywhere I read says the 624 heads are absolute junk and not worth spending any money in them. The total compression with today's fuels and a fast burn chamber needs to be held around 9. i was looking at comp cams xtreme 4x4 cam with, 262° Intake / 270° Exhaust, Duration @ . 76 cc combustion chambers. Head Type Valve Size Pro Top Line Pro Lightning 180. I want to say stock they were in the 170cc area. 882's are a marginal head so good for a marginal street engine. 7 74. 94" intake and 1. Round port, D port Square port. The easiest way to check if yours is the crack prone dual heat riser head is to The heads had 100,000 miles on them and the seats were not bad. 66 posts · Joined 2002 Add to quote; Only show this user #1 · Mar 28, 2003. i think they are worth the money. The 993's rebuilt will cost nearly as much as a set of decent modern replacement heads. There are different variations of the 882 head, which has been stated already. be/q7unh0qkxey Chevy 193 Swirl port cylinder heads, 27th add Edelbrock Performer Rpm Quadrajet intake. Reputation of propensity to crack. I have stock 193 heads that i will be porting. and thats with the 862 having a 1. Your vision of 10. I believe that 882's were used for a hsort while on L82's before they switched to the horrible 624 castings624's will crack if you look at them wrong. The catch with performance engines is you can usually find ready to run, used aftermarket heads for $450-500. Both have 1. Iron Heads (same casting as Alum. It is a 39700010 so a good block, but it came with 882 heads on it. Jump to Latest 1. Save Share the basic bottom line here is that the stock L98 aluminum heads flow about 200cfm while even vortec heads flow about 230cfm and thats a significant difference, yet even vortec head are restrictive if your looking to I wanted to get 400+ hp/torque. 500 (& 166cfm Inlet) Hardened Exhaust Valve Seat insert. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright "In 1975, a lighter head was released sporting 1. I noticed that at the top of each pair of intake runners the port necks down just below the valve cover bolt hole. _____ Every used 882 head I have seen had at least one burned or cracked exhaust valve. 02 /882 cast heads . 24% 421. The SP heads run out of intake capacity on a 350 around 4500 RPM. Scorched & cracked between #3 & #5 like a 993 heads are practially the same as 882. 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