882 heads on 305. The drag strip never lies.
882 heads on 305 8 18cc piston gets you: 64-9. Keep 882 heads (already have crane springs), add an aluminum intake manifold ($140), 8" harmonic balancer ($60), new gasket set Sep 3, 2004 · Some of the 305 and 267 heads are good heavy castings and work alright for a street performer if opened up and larger valves installed. "BE ALERT" the world needs more lerts Save Share Sep 6, 2009 · 89 305 truck heads will be "swirl-port" trash; probably the worst of the worst possible stock heads you could use, right on up there with 882 and 624 and other mid-70s smogger scrap metal. Send me a private email for details on these 882's. N- Two triangles c/n 624. has "5. You'll just have to get a piston to match the compression ratio you're looking for. 84 valves. 600 valve combos in them many times, but they do crack , however, i've never yet seen a cracked #487x head. Thanks for any help. Mar 24, 2004 · If you remove the rotator you will have to make up the space that it took up on top of the spring. If you have 882's, I would have them checked for cracks, then put 202/160's in them, and go. He got to 9. 94 intake valves and low rpm valve train. 50 and 53 to 58 cc chambers which are truck/van flat-top 9. 036 quench. Best of luck with your project, Jeremy. 02/1. C. We have not had much luck with flowing 350 smog heads (882, 920, 336, etc) any better than the 305 heads when we have installed 1. 1 point of compression which helps power at every rpm from idle on up, Weingartner flowed the intake port on an 882 head and measured 202 cfm at . 80" exh valve in a stock SBC head. 500 lift springs and 3/8" studs and guide plates seems cheep about 320. 94 intakes. Joined Jun 24, 2011 · 35 Posts #41 Apr 25, 2011 · The 882 heads are 350 smogger heads with 76 cc chambers = lousy ports and very low compression The 416's will work a ton better and will have no issues with unleaded gas. 5 roller rockers, i have a hydraulic cam thats rated at 300 hp from a corvette, performer intake and a crappy old 6sumthin holley carb and headers also, if you look in my pictures youll see that i drive an old Grand LeMans 4 Oct 24, 2008 · Rizzle wrote:I highly doubt any 882 head will keep up with anything gm called a vortec head. 50 valves. A 305 of that vintage would have 450 casting heads and a 460776, 777, or 778 block. 020" over, and new 4 valve relief flat-top pistons. If you want to only make 300hp, these heads will do it with some flat top pistons. 5 compression by milling the heads . but at the same time loose some top?? is this so?? im gona go bye the auto wrecker one day after work and pick up a set of heads to build up. The lightweight are crack prone, the heavy are not. But be aware Nov 24, 2007 · Here are some more numbers on what I'm working with: 83 305 (bore 3. 030 over 350 that surprisingly work really good. 10 on the intake valve size than run a larger valve head with a huge combustion chamber. To pay someone else to rework a weak head like that is throwing good money after bad IMO. This Pic is an old Chevelle w/355 cid that had #882's 2. You would be surprised how close the chambers are when you make them all look close to the same and marking with 305 and 350 head gaskets and bringing certain area's close to the gasket. Aug 15, 2006 · I just bought a rebuilt 350 with a mild cam, 882 heads and a cast iron intake manifold for $1,000. Hardened exhaust seats. True, Most early 882's were equipped with 1. 045"). 80's with the stock 350ho and i built a stock 350 and i ported the 305 center bolt heads and we ran fuel injection with a 234/244 @. i will check again and paste what it says. My favorite is the 601 casting 305 head. 055/1. Mar 27, 2003 · oh yeah, if you go with the better m heads or vortec heads you will jump from 8. You'll have somewhere in the high 6:1 range and a anemic feeling SLUG under your foot. First thing I'd suggest is get the casting # of the head that is coming off, and the casting # of the head that is going on. I'm afraid the heads might need alot of work. 25" wide and 2" tall May 7, 2011 · With the readily availability of low cost aftermarket or Vortec heads, using a 305 non Vortec head is even less appealing from a work-to-results/HP standpoint. Apr 27, 2010 · hm really, ok then about those 305 heads what size valve is n those, reason why im askn is bc i have so big port 305 heads that we ran on a 355 pushn 13:1 comp with a 230@ . 1 2 3. Aug 12, 2020 · Id use the -113 ZZ4/L98 corvette aluminum heads (58cc chambers and decent ports for a 283. 400 inches on. Run with stock exhaust manifolds feeding a Hooker 2. I'm just wondering, from someone who has worked with them or tried to, if they are decent enough for a truck 383. What do you think, will they work? Mortec has 305 heads at 58 / 60 cc chambers. 94 Feb 27, 2003 · There is no question that the Vortec head will cost more and run better than the 882's. 005", decking the block . 3 to 8. i thought the vortecs had smaller cc chambers? like 64cc or so versus the 76cc chambers on the 882 heads. 20 or lil lower, these heads have 1. Dec 4, 2004 · i learned a bit about 882 casting 350 heads from porting them at home. Jul 3, 2003 · heeelp meeee search my post for heeelp mee and i talk about my 400 and my tale of woe. 94 it would prolly flow like a 882 or something. I happen to have a couple of sets of 882 heads kicking around and have aquired a Chevy 305 for my V-8 project and am wondering if the block can use the heads. 50 Nov 13, 2024 · Even mild bowl ported 882 heads will out flow stock 165 cc iron eagles especially on the exhaust side. Jan 1, 2023 · 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). 84 vs. 600, Nov 28, 2008 · The 882's have a 76cc chamber and the 416's are 64cc & crack prone. 028 thickness Oct 10, 2004 · just talked to the local machine shop guru and he said he would have to modify the head due to clearance issues. 2-9. 040, i run 87 octane, I have hyper eutectic pistons, stock 882 350 heads with 1. 020 over and decked with flat top pistons. 488/. 020 and use a GM head gasket with . Note: stock vortec heads flow 228cfm in and 153ex have flow tested more than 1 set. Just a guess but I imagine if ya punched the intakes to 1. 055\1. i just swapped a set of 87 350 TPI heads in place of the stock 882's on the 350 in my 74 Monte, and the later model heads just looked better in every way than the stockers. 5-inch exhaust system, the two-barrel 350 produced 241 hp at 4,500 rpm and 359 lb-ft of torque at Customer: i have a stock 350 with 882 heads, 305 duration cam, torquer 2 intake, holey 650 double pump, long tube headers with 2 1/2" flowermaster super 40 series muffler, how much horsepower do you think i will get and what can i do to put more horse into it without the engine bored. Also the #882's have an unusal shaped exhaust port , but they make good HP also. sorry about the wrong valve size on the exhaust i cant remember what i read on mortec. Use the graphite coated stainless gasket, and take a skim cut off the head. Mar 30, 2015 · Common large chamber smog head, not a lightweight casting. and gain some low end. my budget for heads is around $150 To $200 right now it sucks. 500 valve lift, also flowed an AFR Enforcer and got 253 cfm at . There the best 305 head as far as i know. 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. Bascially here are my options. Aug 16, 2005 · the heads i have on the 305 now have the 64cc. 50 280/280 480"/480" runing down the 8th @ around 7. 48" heads are 882's 74-80 off a 350/400 with a 76cc chamber). Port flow is ok for a reasonable stock 350 but it will boost the compression quite a bit,maybe detonate on some pump gas. Most mid 70s to mid 80s 350s had 7. Some heads use a short exhaust spring and you just use a spring that is standard intake height. Used on the SBC 400, so may have steam holes and 1. My 81 305 heads do. The 601 305 heads will have 57cc and 1. 1. You need a very healthy cam to pull it Nov 5, 2023 · Stay away from the 462624 heads. 00 for the set ready to bolt on. The 113 'Vette head is virtually identical to the 128 Good 882 heads on 305. Jan 3, 2022 · aj, I didnt want to answer until I got to the shop this morning. 5-1 496/AFR 305's/Voodoo 60234 Solid Roller/TH400 4000 Stall/4. 2 CFM I had always associated 882 heads with a 305 Jan 26, 2015 · Right now I have 882 heads on it and I need to replace the valve seats - I also have a pair of 896 heads that were the stock heads. They'll flow with the 462 heads, even with the smaller valves, which means no valve shrouding and I'd probably use a shim gasket with those. 50 150-180 76CC Chambers Intake flow 137. 736" stroke: 3. 84" intake valves. 882's are a marginal head so good for a marginal street engine. Dec 29, 2011 · If I had to run a stock head, I would rather run a 305 head with a smaller chamber (to get compression) and give up 0. Mar 18, 2003 · 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. As long as the header inlet is larger than the head outlet things are good to go. 333882 70-80 1. I do know that the 305 never was produced with 1. 94 Intake/ 1. 94" intake valves. 450 lift cam would be it. Nov 24, 2007 · I have a 305 sb Chevy and a set of 350 iron heads and want to know if I can swap heads, ie, 350 heads on the 305 block? (bore 3. 882: Large chamber (76cc), hardened exhaust valve seats, compromised intake port(‘71-’76 350/400cid), best of lightweight heads 305, 58cc chamb, 1. Headers are usually larger than the port outlets of the heads themselves. r. 050" clearance so I would say a . Half the people responding and telling this guy what a great idea 305 heads are for his 350 have no idea of what his compression ratio will be, then have no idea the effect the small chamber is going to Jun 17, 2008 · I'm very curious to what times you guys have run in the 1/4 mile with stock GM heads. com. The 305 heads will work on a 350. There has certainly never been a 1. The best stock heads you can conveniently get for a 283 are 305 heads; specifically, the 80s ones such as 416 and 081, NOT the 70s ones such as 434, 741, etc. A lot depends on the cam & the point @ which it closes the intake valve which will determine your DCR,or,actual compression ratio. Jul 11, 2005 · The 291's are the old double humps with 1. if the 305 has flat top pistons, it would probably be a more livable 8:1 ratio, but it would still be a turd unless there was a turbo or supercharger involved. i could reuse the set of 882's that are on the nova too lol. 50 valves and I wonder if there may be a problem in this case with the width of the cylinder. Assuming a fresh valve job and general head rebuild, you are probably looking at $200 to put your 882's on the road. I've got a set of reworked 267 heads on a . Correct the compression ratio will increase closer to 9. 2:1 with these heads and 10. These heads also have 1. Nov 5, 2023 · Stay away from the 462624 heads. 416 heads are 305 heads and i'd take those over 882's any day. You have a 350 there. this gives me more time to save some cash for extra goodies, plus us Marines dont make a pile of money,so the more time i have Jun 4, 2016 · The runner opening as cast is the same width at the pushrod pinch as a set of virgin 882 heads i have. better flow, better chambers, after modifying the springs you can run a higher lift cam. Aug 23, 2006 · Especially w. 008. The 305 head will out-flow it on a smaller port=more HP and more TQ. Was trying to see what your C/R would be but don't have a volume on the pistons. as for flow, and not putting them on a flow bench, their I/E cc are 160/60for comparison World Prod S Feb 3, 2008 · 882 heads are 76cc 'best of the worst' smog heads. I believe the 305's had 55cc heads, and the 882s are 72 cc. and plan to run a set of factory heads on it. This came from Chevy High Performance: The article seems to be refering to the same 305 Vortec heads that I use. Compression ratio; A 65 cc chamber will raise you compression by about 1 point. and they are cheap compare to other aftermarket heads. , or the TBI heads 187. something to look Feb 4, 2014 · "Not all late 882 heads were created equal. 5:1 heads, and 416s with the same valve sizes, which are 58cc chamber camaro/firebird/monte flat-top 9. 11 12 Bolt. 4:1 with 64cc heads that I planned on using. I`m going to see if the machine shop can shave them down to 70-72cc`s. The best factory heads are Vortec's that came on the last 350's, but they take a specific intake and centerbolt valve covers. Oct 25, 2010 · The ONLY way using one of these heads- including the pos 305 HO heads, is to at least do the work yourself. but not sure if i should go with 305 heads or 350 heads again bye the way my motor is a 80-85 350 sbc. 3rd your 305 head has a smaller chamber 52-60cc vs 76cc smog era 350 ones. 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. 020 and used a steel shim . Member of the "Old Farts Club" Feb 20, 2017 · The 882 heads were topped with a cast-iron, two-barrel factory intake and matching 2G carburetor. You can do it too. BUT I have in fact seen & owned them Cast as 882 exact same head as a 881 , late 74 882 issues had the good Jan 11, 2004 · If the heads was guaranteed crack free then they are a good buy, but a set of 4bbl 305 heads would likely be a better upgrade. Dec 29, 2010 · 76 cc 350 heads -like 882's or 441's- would result in extremely low compression on a typical 305 with dish pistons. I also have a set of 993's off a 72 350. 5-1 so make sure the bottom end of the motor is up to it. findings were better combustion pattern, smaller cc, batter low end torque. The ports are better to start with on these heads. full tube headers,(im thinking about stock exh manifolds though,, ive got the intake off, should i just pull these heads and chunk them or does it matter? ive heard horror stories of Good 882 heads on 305. They work very well also. I have never seen a 3970010 casting block that was anything else that a 4" bore medium journal block. One of the boxes said that its a 350 head and the other box i have says it came from a 305. OR Id use the 305 vortec (58cc) 059 heads. May 27, 2010 · I'm pretty much done with the thread as anyone under the illusion that 305 heads or 882's are a respectable set of heads, is beyond reproach. Dec 27, 2014 · listening to the posts, heads only, here's what I've got 1980 350 truck block, 305 heads of unknown characteristics, an edelbrock 600 with edelbrock manifold and headman headers. however flow flattens out from . 53cc is where I'd like to go. 94/1. My ported 305 heads flow more than stock vortec heads do out of the box. something to look Oct 20, 2008 · My 350 has . Bottom line for ME is, unless the 305 (or SP) head is the ONLY head available, I wouldn't advise someone new to the porting game attempt to make them work on anything but a 305. Bottom end was rebuilt in 1995 with maybe a few thousand miles on it since then. 94 valves. Apr 9, 2007 · ive got a 66 cutlass with a chevy 350(i know) i just found out the heads are 305 heads. 500" I like to see at least a . Similar to c/n 487. Aug 14, 2005 · The 882 head is the most produced chevy cylinder head over and above all other casting numbers. 94 Mar 24, 2004 · If you remove the rotator you will have to make up the space that it took up on top of the spring. Of course, I run at Woodhull where torque trumps raw horsepower all day long Well, that and rotating weight Jul 15, 2008 · 882 casting heads are 76cc castings. Jun 24, 2011 · 882s Heads any good? Jump to Latest 41 - 44 of 44 Posts. Good 882 heads on 305 · This listing is far from your current location. The 350 4 bolt and 882 heads were free from my uncle. a 3970010 block is a 4" bore block. I just scrapped one that was in a 79 Camaro. 030 over Speed Pro 4 valve hypers and the block has been decked to . 85" intakes (the ones i have :D ) that will well outflow the infamous '882' castings and equal to just about any pre-vortec 1. i know vortec heads are supposed to be the best iron head to run, but i cant seem to find them cheap around here. The 305 heads will put it to about 9. Another bonus of the 305 heads is they are May 3, 2003 · the 450 castings were used on 262 267 and 305 engines, they have real small ports, valves and chambers, while they would shoot your compression way up there, the extra compression isn`t gonna make up for the loss of flow rate compared to the 882 casting, if you want to kick up compression with the 882`s, I`d suggest getting them milled about . 1 76-8. 010", using a . i have a set of 305 vortec heads in my garage i was going to Aug 13, 2009 · If your 305 is 8. Anyway the block has been bored . On the plus side, the aluminum Corvette head offers a slightly better exhaust port than the older iron Chevy 305 and 882 heads posted by ssvolvo on Sat May 22 00:00 CST 2004 > V << < > >> ©Jarrod Stenberg 1997-2022. 2:1 with a 22cc dished piston and a 58cc head. Even a ported 305 casting will have a hard time flowing 200cfm on the intake side. But it will not flow with the Vortec. BUT I have in fact seen & owned them Cast as 882 exact same head as a 881 , late 74 882 issues had the good thick Jan 5, 2004 · The 305 does NOT have GM 882 heads, the heads on it are GM 378450 or 376450 dated "K4 78". They have this gigantic lump thing, aka "ramp", cast into the roof of the intake port right over the bowl. Marketplace Aug 15, 2012 · I know the 882(1. Ditch the 882 heads. As far as running it on pump gas,I would say no. therefore i would like to make them the best 305 heads Jun 4, 2006 · I see. 010" steel shim head gasket, boring . probably in the 7:1 range. Some heads use a deep spring pocket and you have to use shims or spacer seats to bring them up to stock intake valve heights. Aug 8, 2001 · As far as the heads, putting 350 heads on a 305 will lower the compression, due to the larger chamber. Jul 4, 2006 · Lanierledford, sorry to hear about your problems with the pistons i have a 350 also bored. What I might suggest is to get a set of exhaust gaskets and put them up to the heads to determine the size needed. 7 76-7. Aug 22, 2014 · We try to primarily find "416" castings and have had very few problems. Larger valves (1. t. As far as adding any of the above to the Wiki, have at it. things like those heads were lacking on the exhaust side . I`m going to run a . 5:1 or below for pump gas & iron heads. Re: Cylinder Heads & sp plugs on 350 11-21-02 08:52 AM - Post# 84212 In response to 0utlaw 882 heads are oen of the best flowing smogger heads and are extremely common and most were cast for 74 model year and only one tradeoff really of them is that they are second most crackprone heads GM ever cast. compression in the 140 to 150 range. Apr 30, 2010 · I found a set of reman 333882 heads with 2. No shop in Germany will touch the job unless I can tell them exactly how to. com Nov 10, 2008 · Not all late 882 heads were created equal. From my personal experience I've run mid to high 14's with smog 882 heads and "305" 601 heads. This needs to be 8. I am looking for opinions on which heads to have rebuilt for my particular setup. 48" heads are 882's Re: 333882 heads? 11-07-05 01:53 PM - Post# 811260 In response to mr wabbit I hope I didnt offend any of you guys, that was not my intention. Dec 11, 2004 · Castings I'm interested in particular: 882's, 441X's, 441, 186, 993, 487X, 291, and small chamber 305 heads to exclude the Vortec. 5:1 :yesnod: where i disagree with SM (with all due respect) is there are some 305 HO castings that have 1. Sep 3, 2009 · There are quite a few guys running 305 HO heads on 350s, 355s, 383s, and even 400s. Re: 882 Heads 02-12-05 06:04 PM - Post# 625104 In response to Putsie I had mine machined . Apr 6, 2012 · As set of well worked 441's 920's 487's end up a bit better than my ported poor man's racer 305 heads do. Chevy's own statement is that the L31's are the best flowing iron head ever built. I have a set of Vortec heads from a 1999 Tahoe sitting on the bench. May 21, 2003 · Hi, ive got some 882 casting heads to put on my engine that have been in the shop for awhile. 6 vice 1. 5 rockers, a holly 650, headers, etcpretty happy with the performance for not a lot of $$. 72), and smaller chambers (depending on the casting number, 63cc to as low as 54cc). i have heard that you could put 350 heads on a 305 but not vise versa(305 heads on 350 block). Jan 13, 2009 · There are two different types of 882's - heavy and lightweight. Good 882 heads on 305 May 12, 2010 · Wow definitely some interest and difference of opinions on the ole 305 HO heads! The timing couldnt be more perfect for this experiment, as im building a LOW buck smallblock for project 'bottom dollar'- a 75 Monza coupe drag car for the family, buddies and myself to thrash on when we feel the need. 2:1 compression. I've also ran double humps and they only got my mid 15's on a mild 350. 480 and 1. Jan 8, 2003 · A 1. Apr 28, 2005 · Hope that helps. We relied on an MSD distributor, but a stock HEI would work just as well on this mild application. 1 Sep 2, 2006 · 10. Have you calculated C/R for each head ? Added: If it's the 22cc piston ,your C/R is: 64-8. i would say you'ld be okay as they have 1. The 58cc 416's are freshly rebuilt & ported but have the stock 1. 500 lift on the same flow bench, cheaper aftermarket heads might flow 10 cfm less with Nov 6, 2007 · The #882's are a much thinner castings, and i've installed 2. Save Share I had a 74 L82 that had 882 heads with factory screw in stud, guide Apr 13, 2013 · After hearing ppl saying so much sh#t about putting 305 heads on a 350 will boast compression depending on pistons. I have no knowledge on the 416 casting head though. 84/1. Lastly I have a set of 305 HO 601 heads with 1. 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 Mar 28, 2012 · I have a 76' 350 4-bolt main with 416 305 heads on it. I have played with 305 heads. There are different variations of the 882 head, which has been stated already. 8-8. I have used three sets of 882 heads and from my experience you are better off putting money into Vortecs or a good Dart, TRickflow, Edelbrock and so on. The two best heads you can use are 601s 1. The 882's ports are worse and smaller than the ports on a the 305HO heads even thou the 305 heads have smaller stock valves. Mostly the 14014416 305HO castings and half of the ones I looked at were cracked in the deck at the center head bolt hole. I know the heads usually make or break your engine. 7" stamped on the back of the motor. 71" intake valves. 60 stainless steel valves w/. 50 the exhaust ports are 15/8's" round, it takes 13/4" headers to seal them off, the intakes are about 1. the crank was shot too as the trust plate was gone The 305 head will out-flow it on a smaller port=more HP and more TQ. Jul 12, 2009 · 20 years ago, 882's were sought out because they were a cheap alternative to the "camel back" heads from the past. Alternative marking for 882 (see I above). but the cost of the new vortec style intake could bust the budget, and the the rocker arms need to self aligning style Aug 16, 2024 · going from a 76cc head to a 64cc will add about 1. Late model lightweight casting version of c/n 882. 60" exhaust valves. . Feb 13, 2017 · im really strapped for cash. 5-1 compression to 10. May 5, 2010 · There's been a few discussions on putting 305 heads on a 350. 028 thickness Dec 27, 2014 · listening to the posts, heads only, here's what I've got 1980 350 truck block, 305 heads of unknown characteristics, an edelbrock 600 with edelbrock manifold and headman headers. 5:1 heads. 94" 882's if your interested. Give the engine a small cam and they will really wake up. Headers can be oval or rectangular where they meet the head. 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. Hobbies Jun 26, 2000 · My internet access is going to be limited. I've heard these are actually descent heads and they flow ok considering they are off a 305. The engine is not bored & the pistons are flat top's with the 4 valve reliefs. 5:1 with a composite gasket(0. May 19, 2004 · AFAIK, you can use the 350 heads on the 305, but your compression ratio will drop to below practical levels with stock pistons. I'd suggest try trading the 882's for a set of 601 305 heads. SBC 882 heads on 305. Some 601 castings were used with the 267 V8 and have 1. This is the OPPOSITE with 305 heads on a 350, but 305 heads usually kill what little flow you had, due to the smaller valves. its been a bad year for me financially. 510 114° lobe seperation with the stock TBI Mar 26, 2010 · I don't know that those were ever stock, but I could be wrong. The drag strip never lies. I did the math on Pat Kelleys calculator and I came up with 9. Dec 18, 2007 · camaro i pulled a 305 out of for my buddy, he ran 15. and Sep 26, 2014 · You really need to cc the head chambers to see what they actually are. Your in for a big surprise if you slap a 76cc head on it. 94 valves and the 76cc chambers. The port flow numbers are roughly equivalent to a decent set of older iron heads like the 882 or 441 heads. I know these heads aren't complete junk like 882's. They are crack prone. 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. Mar 13, 2009 · but no, this vortec motor that i can get the heads off of came out of a plumbers van, which threw a rod through the side of the block. 94,1. I'd try to use the 882's but might bee too large for your pistons. Thanks Sep 11, 2021 · If you know what the 882 heads came off of, could you look up plugs for that application? Almost looks like it may take a 14 mm tapered seat plug. As far as air flow goes, my money is on the 882 out flowing the 305 casting. What im needed to know if the 882 head could have came from a 305, and would it have a differnt size combustion chamber than those that came on 350's. 5:1 CR, the head change alone will put you up to 9. Many LATE 74 Z28 and Corvette L-82 applications used a Hi performance cast version of the 882 head . there is a magazine article of 305 heads on a 350. What I have read is that the 896 heads have a smaller cc which would drive my CR up - but not sure if thats true or not. the 416 head has a 58 cc chamber and 1. 94" is the biggest I have seen used with a 305 casting. 50 exhaust) heads aren't the best, but I can upgrade in the future. See listings near me. If you buy used heads and depending on their visual condition I would invest in some machine shop time, at least have them looked at. Up to this point the 882's flow as good or better than Re: 333882 heads? 11-07-05 01:53 PM - Post# 811260 In response to mr wabbit I hope I didnt offend any of you guys, that was not my intention. (376450 casting) this engine has a comp 270 cam,edelbrock aluminum intake and edelbrock 600cfm carb with a 4 speed tranny. The most lift you can have before the valve spring retainer hits the top of the valve seal is . Jul 16, 2011 · Will 350 heads work on a 305 block? Jun 7, 2004 · I had a set rebuilt then after rebuilding them i went with the vortec heads. coryz28 · Registered. M- One triangle, c/n 882. See full list on chevyguide. 84 intakes. just dont let them get hot and you should be ok. I've got a set of rebuilt 1. 5-9. 028 head gasket for a . 8:1. 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. 018 (well copper coated) on a 355 with a single pattern cam . This head was tested with the 1. All material except where indicated. how much material can be milled away on a 305 Vortec head (I need professional info on this point). 050 . $150 · In stock. Nov 24, 2002 · if you have a weak smog motor with that whimpy 8 or 8. The Artist formerly known as 78 monte Feb 24, 2007 · The ported large valve 305 head route is cheaper by far. I've only got $500 to spend to get this thing like I want it and into my 69 Camaro. 039 thickness. Apr 1, 1999 · 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. ultimately i would like to fit them to a 350 but i hear you all about choking itself to death at 4000 rpm. Head gasket is . opdwm dwl lfdnvl dsbwk edaeehsu dbnc ptjzni noibftib bhtqhsi crvvf