882 vs 193 heads These heads have chambers that look like they’ve inherited some smog-head characteristics, but they’re sufficiently removed to fall well short of that category. I compared these to a set of '96 vortec heads, '71 336x heads, a set of '74 993's, a set of '92 217's and a set of '92 193's. See All 19 Photos. Jul 20, 2010 · C3 Tech/Performance - Best Iron heads for cheap? - Looking to spend around $250 or so for some good easy bolt on iron heads. 458 Chevy LB4 Syclone N/A - N/A - - - - 165/119 72. The 083 were used in Fcars and the 193s were used in light- and medium-trucks and fullsize passenger cars. It is a 39700010 so a good block, but it came with 882 heads on it. 5 comp pistons Mar 1, 2021 · Types of GM Vortec Heads L31 Vortecs comes in two different casting numbers, 10239906 (#906) or 12558062 (#062). THIS IS FOR A PAIR OF CYLINDER HEADS. p gain will feel much better seat of the pants wise. i was looking at comp cams xtreme 4x4 cam with, 262° Intake / 270° Exhaust, Duration @ . 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. 94 I and 1. niether heads has 2. 50, 600cfm edelbrock carb, Performer Oct 9, 2017 · 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 . 480'' Exhaust, and 111 lobe separation. 02 valves. How do these heads compare to Vortecs? I am assuming that the Vortec head is much better, given GMs 30 hp rating difference when they changed heads. I don't have any rules to go by, but the topic fit what I have. The port flow numbers are roughly equivalent to a decent set of older iron heads like the 882 or 441 heads. Jan 11, 2004 · While that is a good price on those heads, I don't think they would do you much good on a 327. You may want to re-think this a bit. but on your budget i doubt you will see 500 hp. Jun 17, 2022 · I got my heads checked at the machine shop and one was cracked, so they gave me a replacement rebuilt head. (I have both) The intakes are much straighter in on the sides as they don't have to curve around the pushrod holes like on the 882's. 50 or 2. 02 intake valves, the small block Chevy engine made a respectable 355hp peak at about 5,000 rpm and a big, fat table of torque Username Post: 881 heads? good as 882s? (Topic#60580) davidh Senior Member Posts: 562 Loc: Oklahoma Reg: 02-17-01 Am I going to see the difference between the two? The flow numbers stock vs stock are obviously night and day difference but these 882 heads have been worked over. the engine is a 350 Steel crank, 4 bolt main, 9. This was due to the double heat riser passage. 76cc 1. 50), big chamber (76cc), cast iron factory cylinder head. 71- 76 76cc, best large-chamber head; 1. They yield average flow numbers, but respond to modifications just like any other small block head. _____ Dec 18, 2007 · I would not use the -896 heads on the 350, on the 283 yes. The 86 thorugh 95 heads use a different bolt angle alongside the plenum. Jan 20, 2005 · The ones I have have longer narrow holes which is why the intakes are better than the 882. Are 193 heads good? 193 is typical of most TBI ’87’95 iron heads, with half the intake valve-bowl approach blocked off—not good for serious performance. The 96 and up use the completley different L31 Vortec bolt pattern. 67% 219/172 Jun 2, 2011 · OK, I bought a block today just for the heck of it. 050'' Lift:218° Intake / 226° Exhaust, valve lift with 1. I used the DART SHP heads. 8 hp - - - - 164. they are the preferred head to use out of the factory open chambered small block heads Description Professionally rebuilt pair of Small Block Chevrolet cylinder heads. 455/406 Don't know about 336's but 882 flow pretty well. The 305 head will out-flow it on a smaller port=more HP and more TQ. Advertised Duration 262 int. Those were great heads in their time, but pretty constricted flow compared to almost any SBC head today. 882 heads were designed by Chevy to be used in 350 ci and 400 ci engines. Some of these even had 2. Furtherore, I am leaning towards on older pair of used 882 heads, w/ no work done to them. Jul 12, 2009 · Robert, The heads are not "junk", but they are nothing special either. 94 valved 993 head, and can always add to my stash of 882's. The exhaust crossover was redesigned and may contribute to the cracking between the center exhaust ports that these heads are prone to do. They are not exspensive heads. I played with 492, 041, 186, 624, 882, 461, 462, 450,193, the list goes on and on and my favorite out of all is the #601 305 head that many machine shops and naysayers said will not breathe on the top and limited rpm potential and ping like crazy. 94 valves and the 76cc chambers. Round push rod holes. With 86 comes self guided rockers so all of those heads lack push rod guides. There's a company remaking 461 heads cast in aluminum, and with larger 180cc runners. Cast Iron. the Corvette L98 23 Degree Chevy Head The 23 Degree Street head uses a conventional 23 degree valve angle, making it a direct, emissions-legal swap for 1995 and earlier non-LT1 Chevy heads, has factory valvetrain geometry, and uses standard small block components. But,from the Chevy mania website that has sbc serial numbers, they say these heads are extremely crack prone. I want to run 350-375 hp on pump gas and keep C/R at 9. but they max out at with a 5. Mar 27, 2003 · I have read several articles recently where folks are talking about 882 heads as if they were really the cream of the crop. After replacing the factory 882 heads with the 180cc RHS Mar 11, 2009 · 882 vs 492 heads (kinda long) Jump to Latest 21 - 31 of 31 Posts. can my heads except this Dec 22, 2005 · The chamber is identical to the 350 iron heads that has casting suffix 193. The 882s are quite similar to 84-86E 462624 heads. Bascially here are my options. etc. i guess what my question is. Jan 20, 2015 · i recently built an engine using the same rotating kit you have except with a 5. I am looking for an inexpenisve iron head to replace them with. The exhaust can be bumped up to really high flow numbers. preferably a torque engine. 7 74. Engine Mar 22, 2020 · The heads are casting 882. The heads you have now have big chambers and the tiny 1. 29% 125/109 87. Chevy '882 CCM 151/59 1. We would like to show you a description here but the site won’t allow us. 5-1 compression or so. 440lift 214*@. 6ex, with a 3 angle valve job and some porting. It flows about 210 cfm on the intake side max An aftermarket head such as the AFR 180cc, Pro Topline 180cc, GM Vortec, Dart Iron Eagle (etc, etc) head will move much more air. They are more preferred over the 882 head due to their heavier casting. vortec heads are a great lower cost option. 84 valves. 500-Pipe 76 70/59 84. 400-inch valve lift to the 882 head but is better by 15 cfm at 0. May 11, 2014 · But head replacement can get you into intake to head bolt up issues and rocker arm issues. to get 500 hp, you will prob need more cam than that. 2nd your smog era 350 heads flow terribly. 500-inch valve lift. 60 on motor. 07-03-02 04:09 PM - Post# 113461 Stock out of box 461x heads 1. 94/1. As far as the difference when you consider the application between the 1972 base engine and the LT-1: Base engine used 1. 6k miles on them, they had a crack in one exhaust seat Like Class Action Lawsuit level of terrible. 50 valves. 60over bore 9. 1 Mar 28, 2008 · I know this post is a couple of years old but it has good info about spark plug selection for L-31 Vortec heads. /224 exh. It will go faster. 94 valves flow almost as well and were used in 300 Mar 23, 2012 · Thumper cam, street dominator intake, 882 heads and powerglide is a recipie for a car that is slow AND gets terrible gas mileage. SBC cylinder head identification. 0 mustang gt's! but one did crack months later. so the edelbrocks might be worth looking into. 810. probably around 1250 to 1300. 39% 423. I think the reason this is common on both heads is that the 70s engines were set up with lean mixtures and retarded timing to get the exhaust temperatures higher for the early style catalytic converters. my personal experience with 882 heads was with a 1977 olds Delta 88 with a chevy 350. 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. Mar 28, 2008 · They are crack pronemore so than any of the earlier 76cc heads. 94 intake valves and low rpm valve train. The factory 350 swirl port (casting 193 from a 1992 G30 Van) flow just a little less than the Iron L98 heads do on the intake, but better by a good margin on the exhaust. I'm afraid the heads might need alot of work. Just a set of decent small block heads. #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. The also Jan 13, 2009 · As to heads for a 400, for my money the Dart SS heads have been a better investment than rebuilding most old heads, especially if you want screw in studs and bigger valves. Jan 4, 2008 · well, i dunno about flow numbers, as has been stated, CHP has those figures in a chart. So the 193 head actually makes good sense for a mild street build (low RPM torque). Jan 7, 2010 · Stock out of box 461x heads 1. Chevy Cylinder Head Pair SBC 5. it would run a ton better by just putting the vortecs on with a steel shim gasket and a matching cam shaft. Both are great Mar 7, 2003 · C3 Tech/Performance - 882 vs. I glanced at the cylinder heads and noticed one has a 191 casting number and the other is a 193. Keep 882 heads (already have crane springs), add an aluminum intake manifold ($140), 8" harmonic balancer ($60), new gasket set Mar 10, 2018 · They are Chevy 305 & 350 TBI Throttle Body Injection cylinder heads 1987-1995. May 24, 2012 · 14102193 heads are like 65 to 66 cc found in truck 350, while 14102187 (used in 305) heads were around 55 to 58 depending on the casting. Apr 5, 2012 · 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. 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 991's are large chamber heads thus low compression without a lot of milling and or piston changes. Swirl Port Chevy Iron heads the 191's are. com Jan 6, 2008 · I have to choose some heads before MONDAY My choices are some 993, 441, and 882 casting SBC heads(all the same price and valve size). 1. Oct 23, 2021 · What are 882 Chevy Heads. 5 to 1 with a 64cc head. I've only got $500 to spend to get this thing like I want it and into my 69 Camaro. Many LATE 74 Z28 and Corvette L-82 applications used a Hi performance cast version of the 882 head . the 1. Before that Chevrolet used the 993, 487, 336 and 997 castings used from 72 to 84 on the lower compression engines. Good for a low rpm truck applicationand thats about it. I'm happy with the heads. 50-inch valves with either 67 or 76- cc combustion chambers. Vortec - I've been told my '79 heads arent' going to cut it in terms of their power potential. 450" lift. 000 Bore fixture The heads on my truck are of the 882 variety which need will need a good cleaning and re and re. If both heads are 1. 02 / screw in studs / guide plates / Z28 springs etc. From Crankshaft Coalition Wiki. I installed them right out of the box on a 383 stroker. And the 113 castings have a revised exh port shape than the 083s so that explains the exh flow difference. then went to low mile junk 82' vette heads because my 78' nova was my only car in HS and shortly went to Nov 17, 2009 · Using a set of 882 iron heads that had been modified with a set of 2. 60 valves Jan 1, 2023 · Beginning in '71, the 882 head was also used on the 330-hp 350 and the 400 small-block. 7 hp 205/144 70. Dec 11, 2011 · With 882 heads (76cc chambers) it ran low 14's in the 1/4 mile with speeds in the low 90's. I am lookin for some 993 heads because my machine shop guy says thats the route I wanna go. Feb 20, 2011 · I hear a lot of mixed reviews on the 882s. 50) these are highly sought after and would give you a small performance boost over your 624 or 882 heads. 02 intake valves, the small block Chevy engine made a respectable 355hp peak at about 5,000 rpm and a big, fat table of torque Username Post: 881 heads? good as 882s? (Topic#60580) davidh Senior Member Posts: 562 Loc: Oklahoma Reg: 02-17-01 Jan 17, 2011 · Any idea if it is worth it to replace the stock "193" TBI heads with say a set of 487/993 heads from the early 70's without any other mods except opening the center intake holes to align with the old heads? Any real value here. I also have a set of 993's off a 72 350. Granted, they'll be small, like a performer or dart iron eagle 180, but still offer significant improvement over a stock head. Not worth spending a dime on if you are shooting for more than 275 hp. 480 lift with 230/230 Duration at 0. Feb 4, 2014 · "Not all late 882 heads were created equal. Sep 3, 2004 · 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. zero decking the block is a good idea if your going to pull the engine down to change pistons. It will make good power up til 4500 or so. 76 cc combustion chambers. :lol: Currently have 268H cam with stock bottom end. The speed pro pistons were listed with a 9. Dec 28, 2007 · 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. 6 rockers on a #193 head is kind of a waste of time and money. 80% 180/147 81. . The 200cc heads with the 64cc chamber. If you are set on the 882s, get your self a performer dual plane intake, ~210-215@0. the 624 SMOG era heads? which were lightened / thinned versions of the 882 heads based upon what I've heard I had a set of 624 heads taken off with 14. RHS Pro Action 180cc-HPWhen you realize a gain of 65 hp from a single component, you know you've made the right choice. Depending on the cam, intake, pistons, and headers you run, you might get up to 350 - 400 hp out of them -- maybe more if you heavily work the heads and rev the crap out of it. Heads fit 1987 - 1995 only, TPI and TBI intakes. The flow numbers on 882s are not much less than small valve hump heads. 12% 339. With prices to rebuild stock heads increasing all the time these heads would probably be one of your better investments. 20 in a 2800 lb camaro. 355", 9/1 comp flat tops, . Cast #193 (14102193) , are they any good? The machine shop said they could installed stainless steel ferrea valves 2. 400-inch lift are almost identical. See full list on chevyguide. Mar 21, 2011 · I have a set of gone threw 193 swirl port heads given to me they look jest like the vortec heads but there not iv been told there great ware torque is needed they have have 64cc combustion chambers because there swirl port heads i was told there only good up to 4,500rpm What do you guys think abo Dec 14, 2011 · With 882 heads (76cc chambers) it ran low 14's in the 1/4 mile with speeds in the low 90's. Jun 7, 2004 · The 993 heads were used in 72-73 Chevy 350s, many of them were the 250 horsepower version. omniapartners. These heads are very similar to the 441 and 493 400 small block head. Jump to: navigation, search. The issue is that everywhere I read says the 624 heads are absolute junk and not worth spending any money in them. 60 valves available; latter machined for screw-in studs & guideplates: L: Right-facing bench 993: Common big-chamber head, not a lightweight casting; sim to 487; may have steam holes: M: One triangle: 882: Alternative marking for 882; see I, above: N: 2 triangles: 624 Mar 16, 2011 · Tech Help. With the set up it should have run 6. 72/1. 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. 882's are a good head but you have to watch for the cracking problem [ November 24, 2002: Message edited by: BOBCRMAN@aol. Aluminum heads, like those bearing the 10134363 casting number, tend to be lighter and offer better heat dissipation, making them a staple for performance enthusiasts. Best I can find is a fairly consistent >200cfm rating in the garage is a well used 350 wearing some heads with casting 993. 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 Aug 14, 2005 · The 882 head is the most produced chevy cylinder head over and above all other casting numbers. AFR's two piece guides are a lot easier to deal with but a higher price point. If you went with the 180cc heads, I think the XE274H cam would be best. Heads have the center bolt through valve cover. 550 65 - 123/108 87. 72% 1. The "Chevrolet Small-Block V-8 Interchange manual" by David Lewis states as follows: a lighter cast head was released sporting 1. Sep 28, 2011 · 23 Degree Heads VS. Its not super big power but decent. There are different variations of the 882 head, which has been stated already. The valves are larger and the flow numbers at 0. I assume that the 882 refers to the serial number 333882. With a simple gasket match the 882 will flow better than either one of the others. Jan 13, 2009 · 882s could be called the best of the worst. They are 64 cc heads, so some provision will have to be made for dished pistons to run them on a 355 or 383 to keep c. The 993's have a much straighter shot to the intake valves than the 882's and the intakes are considerably larger appearing. BUT I have in fact seen & owned them Cast as 882 exact same head as a 881 , late 74 882 issues had the good My opinion is to stay away from the 882. When If you are just looking for a set of inexpensive aluminum heads to use on a street cruiser, the L-98 Corvette heads perform decently. O. 364/2. May 13, 2004 · What do you guys think of these heads. Nov 24, 2002 · if you have the 487 heads use them, they are old style castings, heavy, but watch the valve seats. The 193s use a swirl ramp under the intake valve so they flow slightly less that the 083s, but the 193s flow better on the exh side. Many classes of dirt track racing are restricted to these large chamber heads and the racers are looking for this casting number specifically. 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. Do I just keep the heads Sep 18, 2013 · 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. 3rd your 305 head has a smaller chamber 52-60cc vs 76cc smog era 350 ones. Let the vette restorers have the low po stuff. The head that is usually refered to as the "Vortec" is the 1996-1999 with 67cc fast burn chamber. 60 valves, screw-in rocker studs with guide plates Sep 21, 2009 · I have a sbc 400 2 bolt main out of a 1977 chevy truck the heads on it are the 882 76cc chamber. 000 Bore fixture Sep 28, 2011 · 23 Degree Heads VS. 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. Lastly I have a set of 305 HO 601 heads with 1. This also shows the original shape, and how it needs to be altered to m Jan 27, 2014 · Are these heads any good 3832441 i wanna no if thoese heads are good or should i go with some vortecs from pick and pull i have a 355 sbc hooker headers holly 650 carb holley fuel pump 350 turbo trans with 3. Jan 27, 2014 · 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. it is one of the worst flowing SBC heads ever made. dont reuse the heads Re: 336 vs. Feb 15, 2008 · In my opinion the BowTie head is far above any of the other castings you have mentioned, but to put it in perspective, it is still less of a head performance wise than a typical 200cc runner Dart/World style head, and maybe (in certain aspects- chamber design- port height-etc) not as good of a street head as a typical Vortec. 94 Heads, i am hoping to make 350-375HP with them. After a couple of years of not working on it (saving up money for parts) I have started to work on it again. Do you guys think these heads are worth all this effort? I'm I better off looking for another set of heads? Thanks In this video Robert discusses all the details about the 193 and 192 (Swirl Port) Small Block Chevy Heads!Remember to LIKE and SUBSCRIBE!Follow us on social Apr 3, 2013 · Brown's '90 12-ton truck heads should be a No. The 487 have 180cc runners, while the 461 has 160cc runners. My set was originally on a early 1990s 300hp/350 GMPP crate the one that pre-dated the 330hp HO. Updated July '10 — and were converted from 10" to 28". All flow numbers for CNC Heads UK come from their Web Site. Other than than the fact the 882's are crack prone, if you HAD to use one of the 3 which of the 3 castings would you use and why? Mar 8, 2007 · 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. Text descriptions of the heads can also find text descriptions for each head type under the respective headings. /270 exh. 193 casting like this. 02in and 1. L98 Heads Trick Flow's 23 Degree Chevy Head vs. 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 Aug 15, 2006 · I just bought a rebuilt 350 with a mild cam, 882 heads and a cast iron intake manifold for $1,000. 462'' Intake / . The bump in compression will help also probably a 20 to 30 h. Three-quarter-ton heads had No. 7 rod. Jan 29, 2010 · i always heard the heads that came on the 400's were the worst 76cc head to use,, i don't think they came with a 882 head ,,, if u have to do any work at all on old stock heads ,, they can become a money pit real fast , check out the EQ stock replacement heads ,, it looks like a real value to me for stock replacement Jan 1, 2007 · Stock 882 vs. I am not impressed how thin the cylinder head decks are. 94 valves. and would this be a direct replacement without modifying the computer. May 26, 2014 · 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. 9 at 110 mph. The choice between aluminum and cast iron cylinder heads largely affects performance and durability. The reason that the earlier iterations of this engine cracked was due to the fact that they ran really hot. Feb 12, 2008 · The 180 cc heads will most likely perform the best from idle to ~6000 RPM. Most flow numbers for DART heads were from DART or their Web Site updated Aug. unless you plan on going to high comp with racing fuel. i had a set of 441's that were 1972 models and they had 1. In addition to early heads, the 1986 and later Tuned Port Injected (TPI) 350 H. I've heard the 882's perform well if you can keep them from cracking. Unfortunately the 487 heads are very prone to cracking in the exhaust valve seats. May 7, 2007 · this is what i found on the heads: the 882's were installed on Chevrolet engines from 1974-1980. Jan 19, 2014 · i have some 193 heads [used] also a very used 1980 305,i can do all the work my self except boring of cylinders , have a . 1st Hand I can say they do work nice in Chevy & GMC Trucks where you need lots of off idle torque & Midrange Power like for 4x4 & Towing duties. In contrast, cast iron Just as a comparison it went much harder than an identical 350 running the more common 882 heads. Jun 11, 2001 · The 882's arent the greatest head but are the better choice of the 2if they arent cracked. Car picked up 10-15 mph in the quarter mile and several mpg. 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. 8 hp 459. r. I *believe* 210hp heads are about 70cc, and the 210hp 327's was only like 8. 02 etc they will be better than what you have now. Am I going to see the difference between the two? The flow numbers stock vs stock are obviously night and day difference but these 882 heads have been worked over. 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. 5 CR if i remeber correctly. 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. Sep 15, 2021 · Are you thinking of the 882 heads vs. 02/1. 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 would be up closer to 9 1/2 Nov 13, 2013 · the factory 882 cyl heads are about the worst small block chevy heads there are. There are not many heads in the $1k price range that flow as well as the IK's except maybe profiler but I would not use the ready to run version. 50. At 0. This also shows the original shape, and how it needs to be altered to m Oct 18, 2012 · I have stock 193 heads that i will be porting. 60 exhaust valves in them. The catch with performance engines is you can usually find ready to run, used aftermarket heads for $450-500. Jan 27, 2015 · What GVX stated is the same thing that people stated about the 305 heads. 50 valves, pressed rocker studs and softer (less tension) valve springs with exhaust valve rotator cups; LT-1 used 2. Jul 11, 2005 · The 291's are the old double humps with 1. Some books say model years of 1974-80 and other books say 1975-77. I have the Heads off the 1994 K1500 Suburban. at a reasonable level for pump gas. 624, or 882. All flow numbers for CHW — Cylinder Head Works heads come from them Web Site updated April '10. 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. 500-inch lift the flow is up 15% over the 882 head. 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. 50 E valves. What are the 882 flow numbers Jun 8, 2021 · To determine what type of heads are on your small block Chevy, take a look at the illustrations below for 'Early' or 'Late' Style, Aftermarket Aluminum SBC heads, Aftermarket Cast Iron heads, and other SBC cylinder heads. Feb 1, 2006 · I didn't post the original question. The World Products Torquer S/R is an affordable, iron stock replacement head offering a choice of 1. PowerHeads purposely didn't go hog wild on the porting Turns out the mystery SBC EQ (Engine quest) heads flow quite well as cast! 600 HP Potential!Some Flow bench results comparing them to Vortecs and Iron eagles Jan 11, 2005 · edelbrock heads edelbrock heads are much cheaper than 1700 dollars. Originally, the stock #906 casting head was available in two versions. The car has run 11. There is no difference in deck surface between any of the lightweight castings including the vortec heads, the only difference I see is the 624's have a double exhaust crossover (may lead to excessive heat) and the Nov 10, 2021 · Original 461 camel hump heads have smaller runners than the 487 heads. 7L 350 193 Slotted Push Rod Holes, Year:86-93 Mar 3, 2005 · The 882 head is your typical smog-era 70s head. Oct 18, 2012 · I have stock 193 heads that i will be porting. 7 hp 206/145 70. Dec 19, 2005 · 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. Chris Sep 24, 2008 · This head is very similar to the 882 head tested earlier. I seems like they are the first design smog head. 20% 175/136 77. Enough to feel a difference but not enough to buy 100 octane Dec 19, 2021 · Normally you have play with the alignment some on pretty much all aftermarket heads. 02 valve form up to 375 horse stock. Jan 14, 2004 · Tech Help. 025 deck. and on that un-named auction site go for $625-$650 a pair. I have two questions & I'd appreciate your input: 1 Jul 6, 2019 · I bought a set of brodix track 1 220 runner heads from summit. Too bad shipping would be so crazy shipping those headsI need another 1. Swapping to a set of box-stock Dart IE 180's (72cc chambers) put me deep Jun 10, 2005 · Scoggin-Dickey sells these heads already modified, or if you have the stock heads already, you can modify them yourself. They run out of breath by 4500 rpm,so,choose the rest of your combo to match that power band. 10% 419. The 882 heads are also prone to cracking in the exhaust ports. May 9, 2008 · 487x heads flow the best out of all the big chamber medium valve heads (1. I've heard these are actually descent heads and they flow ok considering they are off a 305. 50 cam an lifters and access to z28 springs, what do you all think about this rebuild . 5 rockers . Stock for stock, I swapped the 882's for 487 casting on a L82-77 vette. motors, such as the Pontiac Trans Am and Chevy Camaro, are worth having. be/q7unh0qkxey Nov 7, 2010 · option 2. com ] Jun 2, 2023 · In this video we do a head to head comparison and discuss the facts, and also the pros and cons between the 624, 193 Swirl Port, and the 062 Vortec small bl Jun 7, 2006 · 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. Thats to much for a mild cam and pump gas. 50 & 2. 5. The heads make reasonable power as stock replacement heads, but there are certainly better heads available for a little more money. the 882 heads were installed on the 350ci and 400ci engines (400 heads had steam holes). True, Most early 882's were equipped with 1. The 493 head was most often used on the '71 400 small-block, Apr 18, 2013 · This finishes up the chambers, then goes into the "SCREW" or REAL vortec head design. YOU WILL NEED TO LET US KNOW IF YOU NEED THE ROUND OR SLOTTED PUSH ROD HOLES. 4 hp - - - - - - GM LS-1 204/- 2. 73 posi trying to make least 400hp I flowed and give results on sbc 882,441,487,and 487x heads. 60 valves reground and a set of valve springs that match your cam. On the plus side, the aluminum Corvette head offers a slightly better exhaust port than the older iron Jul 1, 2021 · 1985-earlier were pushrod guided, either by slots in the head casting itself or slotted steel guideplates. com Apr 1, 1999 · The torquer offers great airflow for a low price with virtually identical flow at 0. Oct 13, 2006 · I have a set of Chevy heads with a casting number of 333882, with 1. You can get 76cc / 2. May 13, 2009 · Spark plug position and chamber looks a little better than the early 64cc heads. 882 heads 11-11-02 09:48 PM - Post# 135201 In response to IgorT. Sep 18, 2008 · Exhaust port shape on Chevy small block heads confuses me. 94 valves and unported probable only 20 to 30 hp difference. Didn't run even close only a 7. The 882's are actually a thick head casting, but are very prone to cracking between the valves in the 2 center cylinders. 000 Bore fixture I say that for 3 reasons. i will say, roller tipped 1. Most of them have GMs first attempt at induction hardening of the exhaust seats. Took the same heads bolted on a 434 still haven't check the heads bc well of course brand new set of heads right. In this video I compare Blueprint Muscle Series H8002K aluminum cylinder heads to General Motors small-port Bowtie Vortec iron cylinder heads. 75 lift cam. 480/. Jun 28, 2010 · I don't know what type of heads you got and I am assuming its a 350 sbc. can my heads except this Apr 18, 2013 · This finishes up the chambers, then goes into the "SCREW" or REAL vortec head design. Sep 27, 2014 · The 193 heads are designed for lowend torque. 71% 204/143 70. 5:1 compression ratio with these heads, comp cams . 461 vs. 24% 421. I want to put on a set of 462 64cc heads what i'm looking for is what is the compression ratio on the motor and if i change to the 64cc does anyone know of a site that can help me out. 6k miles on the engine and even with only 14. 94 valves flow almost as well and were used in 300 www. Engine Apr 28, 2007 · Here we go again, Put the humps on if they are in good shape they are far better flowing than the 882 castings. May 30, 2006 · Not knowing the exact specs on your 383 its hard to be accurate but most 383s with flat top pistons will be around 10. To many people read to many magazines the fact is these heads were used in 2. 940/1. Apr 7, 2017 · Neither 991 or 193 heads are any good for performance. 000/1. 500 but with very light 3-angle valve job tested on SF-600 FlowBench Flow tested at 28" on 4. First: What ports are in om my motor, a 1992 Chevy 350 gen 1 small block w/ swirl port heads from a Roadmaster? Judging from how they look, they are either oval or square I guess? Then: How does the the different port styles fit against Mar 11, 2003 · The only difference between the 487 and 487X is that the X has 10cc larger intake port volume. Materials and Construction: Aluminum vs. Retrieved from "https://www Jan 5, 2014 · 333882 heads {been called the best of the WORST (light weight castings)}. 1st your thinner casting 350 heads tend to crack easily and probably are already cracked. Not a Good Head for Hotrod or Race Use. With that cam somewhere between 12-18 degrees initial timing with vacuum advance unhooked and 34 to 36 mechanical all in by 2500-3000 rpm would be ideal but all motors are different depending on other factors but that would be the ball park numbers anyways. www. 050" duration cam, and forget about a lumpy idle sound. '12. your building a budget small block chevy what heads should you be looking for and what to stay away fromsee part 2 http://youtu. 191 castings; 1-ton used No. Oct 13, 2006 · Actually, similar results can be had from just about any small-valve(1. Casting number is 191 or 193 on these heads. It gives around 11. These heads also have 1. SBC heads: Upgrade your engine's performance with Small Block Chevy Cylinder Heads. The 200cc heads will probably allow your motor to breathe to ~6500 RPM which has the capability of creating more peak hp, but it will take away from the bottom end power a little. 2/122. Aug 26, 2014 · The Chevy 193 Heads are the 1987-1995 TBI 350 cylinder heads Grumpy. There are other casting numbers but the 193/187 are very common. Dec 31, 2006 · By ALL means, regardless of brand or type of plug, use anti-sieze on the threads every time on aluminum heads ! I did not use it awhile back when changing the plugs in my Harley bagger, and when I went to remove the rear plug, it peeled the threads right out of the head :sad: It was an expensive lesson, but a good excuse to replace the stock heads with a better breathing set of Screamin Nov 15, 2005 · 193 posts · I am using 882 heads that I had rebuilt and ported some years back before I knew about head cc. lyhf srlizh ncmg uviqmow esuqhpvn oavy zcdo bpxpfz mdpgk iadct