69Chvll Discussion starter. 1158 posts · Joined 2016. #1 · Nov 21, 2017. Hey there, I’ve got some 1974 882 to heads on my 383. Anyone know what the spark plug reach spec is for this head? I’m thinking about going with a NKG heat range of 5. Thanks! Sent from my iPhone using Tapatalk.993, 441, and 882 castings - HELP PLEASE!!! Post by MDH06 » Sun Jan 06, 2008 12:49 am 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).Tom Mobley. 25548 posts · Joined 1998. #3 · Apr 25, 2005. I've seen a couple deals where guys were going put 2.02 327 heads on a 283, the intake valves hit the block. I've heard of, but haven't seen personally, guys doing this swap and getting away with it. I'd stick the heads on the bare block, look up through the bottom, run the valves up ...I recently bought a set of '882' casting sbc heads. Are these any good or 'better' than other stock heads? r raven, Oct 1, 2007. SHARE POST #1. Joined: Jul 10, 2006 Posts: 307. Profile Page ... Raven, I need a set of fresh sbc heads. sodas38, Oct 1, 2007. SHARE POST #3. Joined: Nov 22, 2005 Posts: 8,550. Profile Page. HEATHEN. …Feb 20, 2017 · 350 Chevy-Weiand vs Heads/Cam vs RPM Air Gap The next upgrade involved a cam change and ported cylinder heads. Previous testing had shown that the Comp COMP PE246 cam alone can be worth 30-35 horsepower, but the combination of the ported 882 heads and PE246 cam increased the power output of the small- block to 341 hp and 401 lb-ft of torque.Super Chevy Flows And Dyno Tests A Set Of The New RHS Pro Action Small-Block Cylinder Heads. ... Equipped with the stock cast-iron 882 heads, the 355 produced 337 hp at 6000 rpm and 352 lbs-ft of ...Originally sold bare, so valve sizes are dependent on machining. All 400ci small-blocks utilize Siamese cylinder walls. This design caused the cooling system to develop hot spots and that is why the 400 heads have steam holes. 25534351C: 2004 Bow Tie, cast-iron, Vortec, 175cc intake ports, 65cc exhaust ports, 2.02/1.55-inch valves.I went to do my first valve spring upgrade today on my 882 sbc heads. My new springs are rated at 110lbs at 1.710" and 305lbs at .500 lift.I bought the proper valve spring height micrometer but when I went to do my first valve I found that I needed four .060" shims and one .030" shim to get to the installed 1.710 valve height.Head removal on the Chevy 350 and I am very pleased with what I find!It happens to even the best DIYer: the simple process of removing a screw becomes a struggle when the screw refuses to budge and the head of the screw becomes stripped. But not all...America's favorite high-performance cast iron small block cylinder heads offer big power and bigger value. Chevrolet Vortec Cylinder Heads' fast burn combustion chamber and high-velocity ports combine to produce big horsepower. Vortec Heads can be mildly ported for additional performance and milled up to .040'' for increased compression ratio.What size valves does 882 heads have? 1.94/1.50 GM 882 Iron The 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. This head was tested with the 1.94/1.50 valves. What size valves are in 706 heads? See all 18 photos The smallest of the bunch, the 5.3L 706 (and 4.8L) heads featured a 1.89/1.55 valve combination and a 61.5cc ...The "Chevrolet Small-Block V-8 Interchange manual" by David Lewis states as follows: ... a lighter cast head was released sporting 1.94 I and 1.50 E valves. the 882 heads were installed on the 350ci and 400ci engines (400 heads had steam holes). The 882 heads had double heat-riser passage and were prone to cracking because they ran so hot. ...These heads have been cleaned and Vacuum checked at the ports and valves, The paper work comes with them, they sealed between 70% and 85%, These are 882 heads for a small block Chevy, They are 1.94 on intake and 1.50 on exhaust. Please call Fred with any questions 707-287-374six $150. post id: 7734791802. posted: 24 days ago.The 882 head is a 75-later head-----NOT GOOD. I don't know how much you may be familiar with SB heads, BUUUUUUUUUUUT, 74 was the LAST year for "good" production SB heads. Beginning in 75, Chevy started cutting corners on the SB heads, and by 77 they were basically junk. ... And some 400 SBC heads are 1.94"/1.60" valved vs …GM cars must utilize 76cc heads (approved head numbers are 336, 339, 388, 441, 454, 487, 624, 813, 882, 991 and 993). Aftermarket head numbers are: GM - EQ Part #CC167ES2. or #CH350I; Dart Part #10024267 or #10024360; World Products Part #043600 or #042670; Ford. - World Products Part #53030; Chrysler - EQ Part #CH138B; RHS/Indy Part ...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 5.0 mustang gt's! but one did crack months later. then went to low mile junk 82' vette heads because my 78' nova was my only car in HS and shortly went to ...I have thrown away alot of 882 heads from 350s and 400s over the years because they are junkers. The 186s will outperform the 882s all day long. ... A forum community dedicated to 1st generation Chevy Camaros owners and enthusiasts. Come join the discussion about performance, builds, restoration, modifications, classifieds, troubleshooting ...There are two types of headaches that may cause pain on the right side of the head, a hemicrania continua headache and chronic migraine, according to Mayo Clinic. Both of these hea...This is the type of spark plug you will need for your ZZ small-block. Most stock small-block cylinder heads take this .704-inch thread reach plug with a tapered seat and a projected nose. This happens to be a Bosch copper center electrode plug. Most modern spark plugs use a 14mm thread, which is what your heads use.4636 posts · Joined 2005. #2 · Dec 24, 2009. I went through this thought process a few years back when the E heads where new. I basically settled on the Performer RPM heads. Main reason was a more conventional appearance (mine's a resto mod). If you are looking at new heads and manifold, why not step up to the new technology design.882 or 193 Heads. I have a 350 sbc in a 1979 camaro with a close ratio 4 speed manual with 308 posi. The engine not quite sure on the cam size but it has 882 heads, performer intake, 1" carb spacer and i have either a holley 600 or carter AFB, long tube headers with true duals only 2.25" exhaust.I'm going to use the 882 heads as the first example. The Chevy 882's didn't have good compression, because they had larger combustion chambers. They usually only gave a 9:1 compression on a Chevy 350 with flat top pistons. But, they did flow good from the factory, even with 1.94" and 1.50" valves. (Most high perf. Chevy heads had 2.02" / 1.60 ...Engine Size: 6.6L - 400ci - V8. Description: 71-82 Chevy SBC 400 882/997 Cylinder Head. Upgrade your Chevy small block engine with our Remanufactured 71-82 Chevy SBC 400 882/997 Cylinder Head. Designed to exceed OEM specifications, these cylinder heads are a perfect fit for your 6.6L - 400ci - V8 engine. With the part number ALL-20201, you can ...Description: 71-82 Chevy SBC 400 882/997 Cylinder Head. Upgrade your Chevy small block engine with our Remanufactured 71-82 Chevy SBC 400 882/997 Cylinder Head. Designed to exceed OEM specifications, these cylinder heads are a perfect fit for your 6.6L - 400ci - V8 engine. With the part number ALL-20201, you can easily find and order these high ...882 heads are THIN castings that provide about average SBC OEM performance. a good average aftermarket performance head should. flow about 250 cfm at .600 lift. even stock vortec heads with some port and bowl clean-up should flow about 230 cfm at .600 lift so the 882 heads that generally flow about 206 cfm are not all that impressive, will they ...They are light head castings and are prone to cracking. There are a few different 882 castings out here. For instance 333882, 3238882, etc. The easiest way to check if yours is the crack prone dual heat riser head is to look down the exhaust cross over port at the intake manifold surface.Pair of 882 heads and two V belt/ Serpentine pulleys. $15 for all. SBC Chevy heads 882 - Car Engines & Engine Parts - Fort Smith, Arkansas | Facebook Marketplace FacebookJan 6, 2003 · I order a 383 longblock and it comes with 882heads with the valves opened up to 2.02/1.6 and the bowels blendid. From what Ive been reading 882 seemed to be pretty low performance. The engine builder said he gets about @ 375hp/380torque running a holley 600 with an elgin cam with dur.@50 222/222, valve lift of .447/.447. edelbrock perfomer.4461 posts · Joined 2005. #3 · Feb 21, 2006. I'd be willing to jump on the 376450 bandwagon. Mortec.com lists a 376450 for a 75-81 262/267/305 engine with six or seven exhaust bolt holes and 60cc chambers. The info Mortec lists coincides with the casting date and engine you say your heads came from. They do not list a 378450 on their site.A quick test of eight pairs of small block Chevy heads priced at less than $1,000 to find the best small block Chevy heads on a budget.The block deck height on any small block Chevy is +/- 9.025" as produced at the factory. I put the +/- signs there because 9.025" is the blueprint dimension. It doesn't assure that any block you encounter will be 9.025" or that the block decks will be square to the main bearing bore on all four corners of the block.The 882 head is a 75-later head-----NOT GOOD. I don't know how much you may be familiar with SB heads, BUUUUUUUUUUUT, 74 was the LAST year for "good" production SB heads. Beginning in 75, Chevy started cutting corners on the SB heads, and by 77 they were basically junk. ... And some 400 SBC heads are 1.94"/1.60" valved vs …GM cars must utilize 76cc heads (approved head numbers are 336, 339, 388, 441, 454, 487, 624, 813, 882, 991 and 993). Aftermarket head numbers are: GM - EQ Part #CC167ES2. or #CH350I; Dart Part #10024267 or #10024360; World Products Part #043600 or #042670; Ford. - World Products Part #53030; Chrysler - EQ Part #CH138B; RHS/Indy Part ...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 .450" lift. 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. Like. B.Ok so I have a set of 291's with the smaller valves (1.94 & 1.50) I alsohave a set of 882 heads, (1.94 & 1.50 valves) the 291's need a complete rebuild and the 882's will get a basic guide, seat, and valve check. They ran when pulled so the basics is what I am thinking will need to be done.Trick Flow® PowerPort® 240 Cylinder Heads for Big Block Mopar TFS-61617801-C00. Cylinder Head, PowerPort® 240, CNC Street Ported, Assembled, 1.460" Dual Springs, Big Chrysler, Mopar, Each. Jumpstart Your Next Project! Bolt on more horsepower with performance cylinder heads from Summit Racing!The 292 heads were designed around 1970 and are based on the traditional SBC head at the time which had a water port in between the intake spring seat and the intake bowl. This made the intake bowl around .200 to .300 more shallow than a standard modern performance SBC head which deleted this water port.Re: 193 Swirl Port Porting Question. by 68maliblue » Sat Jun 05, 2021 3:35 pm. Doesn’t seem like too much work to remove this retriction so I’m going to go ahead and take the throat out to 1.69-1.70 even with the edge of the 90 degree step and blend into the bowl. I might trim the valve guides if I’m feeling adventurous.GM cars must utilize 76cc heads (approved head numbers are 336, 339, 388, 441, 454, 487, 624, 813, 882, 991 and 993). Aftermarket head numbers are: GM - EQ Part #CC167ES2. or #CH350I; Dart Part #10024267 or #10024360; World Products Part #043600 or #042670; Ford. - World Products Part #53030; Chrysler - EQ Part #CH138B; RHS/Indy Part ...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. however flow flattens out from .400 inches on. Up to this point the 882's flow as good or better than. >L98 aluminum heads (actually flow better to .60")Apr 28, 2007 · 291vs.882 heads. Put the humps on--they are better heads, if you can deal with no holes in them. I put on old power pack 283 60cc chamber, small valve heads, and man, wow!!! The 882 heads were low compression, smog heads, heavy duty castings. They were one of the last, true good casting heads chevy made, besides the 487 and 487X heads.Sep 3, 2004 · according to a book i have on chevy small blocks they say the 441 is a very good head, good casting, and was basically the first step away from a high performance head with the increased chamber size (decreased compression). the same book says that if you buy an engine that has 882 heads they should be discarded.techinspector1. 18069 posts · Joined 2005. #2 · Oct 24, 2019 (Edited) The quality of pump gas isn't going to improve, so that's what you have to build to. Current thinking puts the static compression ratio limit at 9.5:1 for use with iron heads and 10.5:1 for use with aluminum heads to help prevent detonation.Our lineup of small-block Chevy production heads is (from left to right): 128 ('87 Corvette), 882, 487, 126, 441, 993, 113 ('88-'89 Corvette). The 113 'Vette head is virtually identical to the 128 ...Basically, an 882 head is a good head----------------------until it cracks. It is NOT a question of IF it will crack, but WHEN it will crack. Here is some historical information about SB Chevy heads that many people do no realize. First, 1974 was the last year for the "good" thick heads on a factory production SB engine.Cam advice for 882 heads needed! I decided to post my first thread after spending some time online digging for info and not finding what I need. My car is a '70 el camino, 350sbc, 882 heads, flat tops, some kind of RV cam, RPM Air gap, Eddy 1406, long tube headers with mufflers, HEI, TH400 with shift kit n 3.73 gears, 12bolt posi, dual electric ...Feb 11, 2012 · heads and cam Well for starters the 882 heads have a large chamber size of 76cc and they flow alright but hurt the compression of down to about 8.3 to 8.6 which sucks and hurts performance which also limits a great cam, so for a just cam swap with a heavier truck as the Elky is with not to much of a stall I would probably limit cam to a 268 hyd from Comp, have installed quite a few with about ...Colleges and new high school graduates have what I think is a strange idea. They think every freshman is an ad Colleges and new high school graduates have what I think is a strange...I will be replaceing valve springs on a chevy 350, 882 heads using comp cams Xe274 - .490 lift. What valve springs should I get and what diameter? Is 1.222 the stock diameter? Should i get that Diameter then? or should i get 1.250 or bigger? Does it make a difference? I was thinking about these becouse their cheap Erson Performence …The 993 casting is a better casting then the 882. They are both 76cc smog heads, but the 993 casting is a little thicker casting and less prone to cracking. The 993 ports are better then the 882 port and they clean up nice. 350hp on a 350 cubic inch small block is easy to do with these heads.MidgetMotorsports07 wrote: the nitro man wrote: 441, 487 & 993 are all decent heads, but the 487x is the better head. yes they are... but getting scarce! I have 3 sets left, but I have countless 882s. there is no comparison between the others and the 882's for power. They just suck period and are thin castings as well.Re: 882 Head Intake Port cc (mean8t) The cam is a Crane Energizer: .454/.454 lift, 216/216 duration at .050" with a 110 degree (I think) lobe separation. Stock cast manifolds with EFE actuator (flap) just below the right hand exhaust manifold before the exhaust pipe. Single high-flow catalytic converter (2-1-2 exhaust).69Chvll Discussion starter. 1158 posts · Joined 2016. #1 · Nov 21, 2017. Hey there, I’ve got some 1974 882 to heads on my 383. Anyone know what the spark plug reach spec is for this head? I’m thinking about going with a NKG heat range of 5. Thanks! Sent from my iPhone using Tapatalk.With the 64cc heads I have now, my compression is about 9.1:1, if I go back to the 76cc it will drop to 8.5:1. Also, the #369 heads I want to port are using 1.94/1.50 valves. My #450's have been upgraded to 2.02/1.76.. so i don't know which to use now. It seems if I had enough meat to port on the #450's that with the larger valves and higher ...Hardly exotic or even desirable by enthusiast standards, the 882 (common SBC smog era castings) heads featured both small valves (1.94/1.50) and large 76cc combustion chambers. The heads showed ...Description Professionally rebuilt pair of Small Block Chevrolet cylinder heads. 76 cc combustion chambers. Heads fit 1986 & OLDER only. These heads do have the accessory holes in them. BEST PRICE, BEST …Are you thinking of the 882 heads vs. 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 14.6k miles on the engine and even with only 14.6k miles on them, they had a crack in one exhaust seat... Like Class Action Lawsuit level of terrible.For the first 25 or 30 years, stock small-block Chevy heads used simple, 3/8-inch pressed-in studs that did an adequate job of offering a rigid pivot point for the rocker arm. But as performance applications, engine speed, and valve spring pressures continued to increase, the aftermarket, and later the factory, converted to screw-in studs.I recently bought a set of '882' casting sbc heads. Are these any good or 'better' than other stock heads? r raven, Oct 1, 2007. SHARE POST #1. Joined: Jul 10, 2006 Posts: 307. Profile Page ... Raven, I need a set of fresh sbc heads. sodas38, Oct 1, 2007. SHARE POST #3. Joined: Nov 22, 2005 Posts: 8,550. Profile Page. HEATHEN. …FULL RESULTS & VIDEO! 2 TESTS! 350 VORTEC HEAD & CAM UPGRADE. UPGRADING THE LEGENDARY L82 WITH ALUM HEADS & CAM. Are the junkyard Vortec heads the best bang ...May 26, 2021 · Porting small block chevy 882 casting cylinder heads. I am not a professional, just trying out a little bit of porting. I open up the intake port, exhaust po...350 GM 333882 Chevy Cylinder Heads. No returns, but backed by eBay Money back guarantee. Valve job, seat and guide work as needed. New seals and new valve springs to. 450 -.550 lift,depending on your cam. Inquire for details.450 spring coil bind by default buy it now. ABOUT THESE HEADS AND THEIR HISTORY.291vs.882 heads. Put the humps on--they are better heads, if you can deal with no holes in them. I put on old power pack 283 60cc chamber, small valve heads, and man, wow!!! The 882 heads were low compression, smog heads, heavy duty castings. They were one of the last, true good casting heads chevy made, besides the 487 and 487X heads.It is a sbc400, stock heads i guess stock heads. I measured compression ratio around 8:1 (deviates among cylinder between 7.5:1and 8:1) It has headers and edelbrock intake. The propane supply goes via an 300a mixer which according specs delivers max 275hp. The mixer is directly mounted on a 750cfm edelbrock 1407.If you've ever needed to core a head of iceberg lettuce, either because you need to chop it up or you just want it easier to separate, there's an easier way than trying to carve ou...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. Go here to check casting codes. ... The 14102193's are off a 94 3/4 ton Chevy 350.-----building 75 CAMARO 406sbc w/ 272 crane cam,94truck heads eldebrock intake,Q jet 1000 STALL 94 3/4 GMC 4X4 air raid ...Nov 22, 2020 · 350 with 882 heads. Hello Everyone, I recently purchased another 65 SS with a SBC 350, 2004r trans, and a 12 bolt rear end. I noticed it ran very very very rich and started having starter issues after a couple of weeks. I did some research on the numbers (3970010) on it and it turns out it's a 1972 350 4 bolt main with 882 heads with a mild cam ...882 or 193 Heads. I have a 350 sbc in a 1979 camaro with a close ratio 4 speed manual with 308 posi. The engine not quite sure on the cam size but it has 882 heads, performer intake, 1" carb spacer and i have either a holley 600 or carter AFB, long tube headers with true duals only 2.25" exhaust.Save seller. Joined Oct 2023. Find many great new & used options and get the best deals for Small block Chevy 350 heads 882 fresh at the best online prices at eBay! Free shipping for many products!Re: 882 Head Intake Port cc (mean8t) The cam is a Crane Energizer: .454/.454 lift, 216/216 duration at .050" with a 110 degree (I think) lobe separation. Stock cast manifolds with EFE actuator (flap) just below the right hand exhaust manifold before the exhaust pipe. Single high-flow catalytic converter (2-1-2 exhaust).SBC heads: Upgrade your engine's performance with Small Block Chevy Cylinder Heads. Explore our SBC aluminum head options for increased power and efficiency now! SBC heads: Upgrade your engine's performance with Small Block Chevy Cylinder Heads. ... Chevy Cylinder Head SBC 400 882/997, Year:71-82 $325.00. Add to cart-12%.You can raise the exhaust port just like an intake port, but the overall port shape is waht matters. most race heads have a vey large radius in the overall port shape on the exhaust unlike the old dog leg shape. 67 camaro. girly rollers on pumpgas: 420 - 641hp BretBauerCam, 1.39, 9.79 @ 137.5. 383 - 490hp 224/224, 1.56, 10.77 @ 124.6.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...Hard to find better heads for a 283 than the good ol' Power Pack heads. Some might say to run 305 heads instead, but the vintage look of the old-style 520 castings along with the small high-velocity ports and 1.72"/1.50" valve sizes will do that 283 right. draggin'GTO, Jun 24, 2011. SHARE POST #2. 1Nimrod likes this.Dec 11, 2011 · It's easy to get $7-900 or more into a set of old iron heads, before any porting, with basic machine work, valves, springs, guides, studs, and such. I got my $882's redone for just over $200 at a bottom of the barrel machine shop, and other than low compression, they run fine on my cruiser 350.Chevy 882 SBC Bare Heads. $200. Hobbies › Car Engines & Parts. Listed 4 days ago in Hanford, CA. Message. Message. Save. Save. Share. Details. Condition. Used - Good. Chevy 882 SBC Bare Heads 333882. Cut for screw in studs 1.94/1.50 valves Comes like you see it. Will not ship. Pick up or local delivery $200 OBO.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. however flow flattens out from .400 inches on. Up to this point the 882's flow as good or better than. >L98 aluminum heads (actually flow better to .60")I'm trying to help my cousin decide on a good flowing head for his 350 SBC. He likes the idea of aluminum, but price is a factor, so I suspect iron may be considered.. His current heads are 74 cc and that's what he needs, that produces 10 1/4 compression and it's a street pump gas engine with a 230* @ .050 cam. SKeownThe 882 head is a 75-later head-----NOT GOOD. I don't know how much you may be familiar with SB heads, BUUUUUUUUUUUT, 74 was the LAST year for "good" production SB heads. Beginning in 75, Chevy started cutting corners on the SB heads, and by 77 they were basically junk. ... And some 400 SBC heads are 1.94"/1.60" valved vs …Rocker Arms: Sportsman II heads utilize a standard offset rocker designed for the Small Block Chevy. Special Note: When using rocker arms greater than a 1.5 ratio, it may be ne cessary to elongate the pushrod guide holes in the cylinder head. Rocker Arm Studs: -1 & -2 Cylinder heads use a 3/8 rocker arm stud. Replacement part # 830475Sep 6, 2010 · I am looking a good set of heads for our psv8 dirt car we are runing a 355 with a 420/420 lift cam 882 heads with 500 lift valve springs 1.94 intake and 1.500 exhaust. I just want to now if there is a better head.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 . Just sold an extra set of the good 2.02 /882 cast heads . Many times the nicer HP 882 heads can be picked up cheap as people don't realize which version they have."I order a 383 longblock and it comes with 882heads with the valves opened up to 2.02/1.6 and the bowels blendid. From what Ive been reading 882 seemed to be pretty low performance. The engine builder said he gets about @ 375hp/380torque running a holley 600 with an elgin cam with dur.@50 222/222, valve lift of .447/.447. edelbrock perfomer.Small block heads (882) Rochester, NY. $100. 1986 Dodge parts, first Gen Dodge, GEN 1, small block V8, 360ci, 318ci ... New SBC & BBC Power Force 8/71 blower kits complete. Niagara Falls, NY. $300. sbc small block Chevrolet 400 engine core block crank heads project 6.6 camaro nova chevelle impala. Spencer, NY. $100. sbc heads 350 194 used good ...487x heads flow the best out of all the big chamber medium valve heads (1.94/1.50) these are highly sought after and would give you a small performance boost over your 624 or 882 heads. Many classes of dirt track racing are restricted to these large chamber heads and the racers are looking for this casting number specifically.115 posts · Joined 2002. #1 · Feb 4, 2003. Guys. I'm using a Ron Francis electic fan kit on my 350 Chev and it includes a temperature sender unit/switch with a 3/8" NPT thread which needs to be fitted into the cylinder head. The Chev has a 1/2"NPT hole (by the headers) so I got an adaptor - but with two NPTs together it sticks out a mile ...Next, we swapped out the stock 882 heads and stock Chevy cam for a set of ported 882 heads and emissions-legal COMP cam. We also upgraded the stock cast-iron Q-jet intake for an aluminum Weiand ...75 cc heads, .025 deck, .015 gasket, 4cc of valve relief, just over 9.3 : 1. If you mill the heads flat .030, that will remove between 4 and 5 ccs, everything will bolt up as stock. If you run the thin head gaskets and mill the heads, mill the intake side roughly .030 on the heads as well to assure easy intake bolt up.The 487 heads are quite decent for what they are. They are the best of the smog heads. They were used on the LT-1's in the early '70s. They have good inlet ports and are basically identical to the fuellie heads except that they have 76 CC chambers for less compression. The 487X has bigger inlet ports.. Upgrade your Chevy small block engine with o3. Cutting heads quite depends on the head and the deck The 292 heads were designed around 1970 and are based on the traditional SBC head at the time which had a water port in between the intake spring seat and the intake bowl. This made the intake bowl around .200 to .300 more shallow than a standard modern performance SBC head which deleted this water port. Unfortunately the 487 heads are very prone to cracking i Thanks for the picture carnut. Even with stock valve sizes Jeff Swisher gets 7000+ out of these heads so they will cover your application quite well with guides, a good 3 angle valve job and some straight forward porting. Servedio Cylinder Head Development. 631-816-4911. 9:00am - 9:00pm EST. ap72. Guru.The All-American SBC Cylinder Head Series is a powerful, out-of-the-box, 23 degree conventional port cylinder head product line. Featuring high velocity, PRECISION As-Cast or optional CNC ports. Available in various as-cast or CNC intake port options (185cc,195cc,210cc,235cc,site) the Pro-Filer All American Series SBC heads have the … It's two half-ovals connected by a straight bar-most easil...
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