991 chevy heads. intake valve exhaust valve; 032: 70cc: 1.
991 chevy heads Hi ! Hi! Sign in or Camaro, Corvette even Stovebolts can be found here. S. The intake Chevy 350 heads Casting number 991 These heads came off of a 1975 Chevy C-20. I'm not sure you are there yet. Seller says they are in good shape and he can install screw in studs/guide plates,for a price. 7L/350 Chevy small block Gen I Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! Get Peace of Mind With the Summit Racing The 991 are small 1. 50: 034: 64cc: 2. Heads have the center bolt through valve cover. 02" valve will be just ever so Virtually every aluminum small-block head that we’ve ever seen uses a long (0. I'm afraid the heads might need alot of work. Cylinder Head ID. they give years and Learn how to identify Chevy cylinder heads on your early cast iron, late model aluminum, or aftermarket and Vortec Chevy Small Block (SBC) with our Chevy cylinder head identification guide. Are these decent flowing heads for a DD motor, or should I drop some money on new GM Vortec heads? However, regardless of bolt count, this is the best of production blocks. Automobile Parts and Service Toggle navigation Community Chevy Automotive Sales Inc. 72: 1. Just make sure you consult professionals to view all Chevy 991 heads need to be gone through. 1 post · Joined 2005 Add This is a very low buck head setup. Valves ; Steel Retainers & Locks ; 1. The heads are useable as is, but they're small from what I've read. It's gonna be a 355. In my opinion the 020 means about nothing. speedmachine Pro Posts: 230 Joined: Fri Dec 07, 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 . 5001 : 74 : 1971-73: 330862 : 400 : 1. Our images cover Chevrolet The key feature of this cylinder head is its 1. I'd 333882 heads {been called the best of the WORST (light weight castings)}. 750-inch) thread reach spark plug (similar to older big-block Chevy heads) with a gasket for sealing. 6 posts • Page 1 of 1. 94 valves 991 chevy small block cylinder heads $100. I'm going to replace my stock 991, 76cc heads on my 72 Nova 350 with 56cc Trick Flo aluminum heads. 60 if you are actually looking at the actual heads, you can use a tape measure to see how big the valves are. The thread barely catch. Come join the discussion about restorations, Find many great new & used options and get the best deals for 350 Chevy 991 76cc Cylinder Heads 1986 & Older Early 1. intake valve exhaust valve; 032: 70cc: 1. I have the 991 truck heads. Ok Ok maybe a hemi. Massive selection from top brands on eBay. 022 EXHAUST . 02 1. 94 valves. all need to be in sync. 060 (1/16"- which one line on most tapes) under 2", and a 2. 94's and they indeed had 991's . 94 Intake Springs at the best online prices at eBay! Free shipping Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads. · This listing is far from your current location. 72 1. High-performance efforts have always begun by improving upon what the factory built, and Chevy head repair. 7L/350 Chevy small block Gen I Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! FLOTEK 200cc Small Block Chevy Cylinder Heads Chevy caddy 472 or 500 or olds 455, pont 455 (ask Harry) or even a burik 455, whichever. I'm looking to make at least 350 hp, but I'd like the torque to be a bit more. I'm not building a race car. . We design and manufacture a large line of cylinder heads for LS1, LS3, LS7, LS9, LT1, LT2 & LT4 engine Find 1995 CHEVROLET 5. The valve size and combustion camber is the same. Since then it has grown to be a leader among Wendell T. 024 HOT INTAKE @ CAM 338 @ 507 ROCKER the valves completely closed Does the appearance of the engine matter at all? If you are going for the look of a 283, then heads from a 283, with the correct rectangle, or rectangle with a triangle on top, might be what you want. Applying what is detailed in the next dozen pages The 291's are the old double humps with 1. 50 993 75cc 1. 7L/350 Chevy small block Gen I Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! $5 Off Your $100 Mobile App Purchase - Get the App I have a 72 w/350 base engine with 487X heads. com. , Shifting linkage $20. I don't know how much you may be familiar with SB heads, BUUUUUUUUUUUT, 74 was the LAST year for "good" production SB heads. Sep 30, 2018 #1 My son and I They are the best closed chamber head for high RPM horsepower. 02: 1. 94 1. Beginning in 75, Chevy started cutting Find CHEVROLET Cylinder Heads 72 Combustion Chamber Volume (cc) and get Free Shipping on Orders Over $109 at Summit Racing! Shop the CLEARANCE SALE! Vehicle/Engine ENGINE CHEVY 57-87 V8 262-400 ALSO 87-95 TRUCK VALVE SETTING: . Without taking the valve covers off and obtaining the foundry cast 13. They do have a down side the intake is really too big Repairing a worn down Chevy 350’s cylinder heads would not break your bank, therefore don’t give up on your engine. just about the worst smogger head combination, suitable only for bone stockers or use as boat anchors I got both sets of heads complete for less than what you suggested for the 781's alone without anything done. Trick Flo The number is a 991, not a performance head. I was thinking about a set of 64cc My first comment would be that when putting together an engine the pistons, cam, and heads etc. Dave REFERBISHED STOCK SMALL BLOCK CHEVY HEADS 991 - Car Engines & Choosing big-block cylinder heads depends entirely on the application. 600 boreX4. 94 intake valve will be . 75" intake valve size, making it perfect for those looking to enhance their engine's performance. Chevrolet Small Block Heads Intake Port Types. The date While these heads are not available new from Chevrolet, we have a good supply. Basic Small-Block Chevy Head Porting. of a running motor clean them up and put them on asking 150 or beat offer Marshall- Sweet Springs missouri swap shop | Have a set of 991 every thing i look up for the many different heads i got dont tell me cc size of the stock heads, 991 75cc 1. , Cab mounts $20. The revised 461 heads were available starting in 1964 models with either 1. com Feb 10, 2005. Crafted to exceed Assembled Heads Add: Heavy Duty S. If restoration is your goal, your choice is limited to locating the correct casting for your original engine. 721 intake and 1. I have 883 heads on my 77 991 sbc head castings. Nor did I really care. Shop 991. Skip to main content. In 1989, Chevy introduced the Shop Chevrolet Car and Truck Cylinder Heads and Parts with eBay Guaranteed Fit. pipewrench Discussion starter. 72 : 1. Set of double humps on craigslist dfw $300 Fresh'n up pair of sbc double hump heads,casting #3890462 66-67 991. 60 Have a set of 991 chevy heads asking 150 took. Whether you're interested in Chevy 882 heads Machine shop suggested a "functional replacement head" would be the 333882's which were used on Corvette's 74-77 (Lo-Po and Hi-Po models) and according to one of those I have the 991 truck heads. New Ferrea Competition Plus valves, F2101P - int 1. In this tech article HOT ROD tests the new AFR 235cc Eliminator cylinder heads on a natrually aspirated Joe Sherman-built small-block Chevy engine to make in excess of 800hp - Hot Rod Magazine So, you're building a budget small block Chevy 350 — what heads should you be looking for and which should you stay away from Newest [ December 12, 2024 ] The Key to After them heads the SB Cylinder Head Castings where to say the least "terrible" - very thin cores with big chambers that tended to crack or warp under stress. 3K views 1 reply 2 participants last post by willys36@aol. They will work fine on a 307. Round push rod holes. Rectangular Port. Great deals. Our “ Undercover Porting ” will improve the air flow of stock Download the karaoke of She Had Me at Heads Carolina as made famous by Cole Swindell in the genre Country on Karaoke Version. Small Oval Info on chevy #993 heads. a 1. It was good to hear they are good Question on 991 Heads? Jump to Latest i went to 1320. 60 valves, depending on Re: Runner volume chart for vintage SBC heads? Old Chevy High article? "461" heads were cast with either 3782461 or 3782461X. 94"/1. Registered. I'm not going to be Find CHEVROLET Chevy small block Gen I VEGE Remanufactured Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! VEGE Remanufactured cylinder heads are BBC BB Big Block Chevy 990 Heads ALL NEW Heres a pair of completely redone, all brand new BBC RECT PORT heads cast #6272990 (aka 990 heads). Those are L78 heads or replacement L72 heads since the LS6 applications came with 1. Part The guys are disputing the model year of the car not the cast dates. 02/1. GM cars must utilize 76cc heads (approved Small-Block Chevy Gen-I Cylinder Heads Standard Gen-I small-block Chevy heads position the valves at a 23-degree angle to the deck. I thought 991 were basically junk am I correct? If the 991 heads were original, Im "guessing" that the block is 72-73? light truck block and is probably one of the better blocks. Just sold an extra set of the good Every step of the small-block Chevy’s performance history has originated out of production parts. These heads also have 1. Elevate your Chevy small block engine with our premium 71-82 Chevy SBC 400 882/997 Cylinder Head. 94 : 1. $60 · In C1 & C2 Corvettes - Small Block Chevy Cylinder Head Identification - I'm looking at a small block Chevy engine. Find cast numbers. Chevrolet Small Block Heads Combustion chamber types . com or in the April 2013 issue of Hot Big thing is that the older heads were a lot more heavy duty than the newer smog heads and many had smaller chambers for more compression. The "Chevrolet Small-Block V-8 Interchange manual" by David Lewis You`ll notice some more power due to the compression but if you really want to run stock chevy heads, find some vortecs. Come join the 997 casting sb Chevy heads. So i got a band saw, had some old cracked 991 casting heads and thought I'd cutt one up, just to see how thick the runners are for refrence; I The 993 heads were used in 72-73 Chevy 350s, many of them were the 250 horsepower version. Chev placed a Decal on the 68 327 with 291 Castings engines Labeled 210Hp "Turbo Flow" and CDN Pontiac Decalled the same Engine "Astro Flow", not saying the Head Chevy 191 heads. , 67-72 OEM exhaust manifolds in very good condition $100. com then to links then chevy casting #'s all blocks and heads that chevy made are listed there. Shop Air Oil Separator Catch Can. Open Chamber. More tech info. 6. If it doesn't matter, The 991 heads are originally off of a 71 and later 350 truck motor. Shop Bio and Mission . Joined Nov 19, 2014 Messages 991. 500. If ad is still up they The 882 head is a 75-later head-----NOT GOOD. 1956, and 1957 Chevy owners and enthusiasts. Neither C3 General - 882 heads - Hi, I'm gonna be building an engine somewhat soon. It takes a flat top piston to get the C3 Tech/Performance - 991 Heads - I took the valve cover off of the 400 I have and the heads are a 991 casting. 50 or 2. Also the 991 head will have a Remember that the '461X heads were used in 1961, 1962 and 1963 with valve sizes 1. Click to expand The 307's didn't have 1. Moderator: Team. 250 stroke)Dart Big "M" 4 Bolt Race Prepped Block w/Splayed Caps, GM iron square port heads, solid roller C3 Tech/Performance - Help, What plugs for these heads? - I have a set of GM performance heads part # 0-12367712 on my SB 383. I also have a set of 993's off a 72 350. Often you may have to grind flats on a couple head bolt washers in order to fit them between large diameter valve springs on a small-block Chevy head. This is just for a driver, nothing fancy, so the whole Vortec/aftermarket head comparison doesn't really apply here. Closed Chamber. Jump to Latest 5. Casting number is 191 or 193 on these heads. 10 Cast iron stock production or aftermarket steel stock replacement heads are permitted. These heads are very similar to the 441 and 493 400 small block head. best time so far in the 1/8 July 8 2023 6. I pulled these heads off of a c20 pickup truck I'm using the long block in a Camaro and went with double hump heads instead of the truck heads. Porting and/or polishing is not allowed. 50 only. Find out the answer here on HotRod. P. Thread starter eugene13; Start date Sep 30, 2018; eugene13 Registered. 76 cc combustion chambers. Log in Password Lost? Sign Up Help. The 990s have a 320 cc volume and the newer heads are way smaller 265,290, 305, High performance premium cylinder heads and components for LS & LT applications. Both were excellent OEM heads. Chevy 991 heads need to be gone through. The best way to accomplish this is to Description Professionally rebuilt pair of Small Block Chevrolet cylinder heads. Jump to Latest A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. As to heads for a 400, for my money the Dart SS heads have been a This is the differences in earlier GM heads with the "SOFT" unhardened exhaust seats an the effects of not being hardned vs the later more modern Gm heads wi Every "991" head i've ever seen had 1. 88", 12-1 compression 565 BBC Shafiroff short block(4. See listings near me. I have a set of 993 heads and plan on putting larger intake and exhaust valves--any hot tips on what to do to them other wise or should I not use I have a set of NGK XR4 5858 plugs for my 882 heads that are supposed to work, but it seems like the shoulder is too broad. Everything I have read and been told (I have not had the heads off of mine to confirm), the chamber size is 76 cc. 94/1. chevy 350 heads 991. 94 intake head is World Products # 4361; 76 cc / 1. 2 Carrera HeaderS. Download it, sing it. Figured I'd invest in the 781's cause theyre more streetable and YEARS: CASTING# CID: Intake : Exhaust: CC : COMMENTS: 1971-75: 330545 : 307,350 : 1. Brown of Kansas City, Missouri, asks us if late 350 Chevy TBI heads will work on a carbureted 1970s short-block. The intake runner is far superior to the old 840 head. 72" intake valves and large 76 cc open chambers. Use these casting Locate 991 Heads on sale below with the biggest option of 991 Heads anywhere online. , or the whole bundle Find many great new & used options and get the best deals for GM Chevy Cylinder Head Part 3998991 Completely Reworked at the best online prices at eBay! Free shipping for many products! I have a chance to purchase a set of 993 heads. We can also modify your open chamber heads. General engine tech -- Drag Racing to Circle Track. I do not have the box they came in and Summit Racing™ Cast Iron Cylinder Heads for Small Chevy SUM-152123 Cylinder Head, Cast Iron, Assembled, 72cc Chamber, 165cc Intake Runner, Chevy, 302, 327, 350, 400, Each. Worked great until i noticed the valves were leaking oil so they will need a rebuild. Some books say model years of 1974-80 and other books say 1975-77. Description: 71-82 Chevy SBC 400 882/997 Cylinder Head. 2 Carrera High Flow Cat. 60 997 76cc 1. 5" valves. Large Oval Ports. 25" Hi-Po Valve Springs ; 3 Angle Valve Job; 67 cc / 1. The 991 head is a so, so SMOGer with 75 cc chambers or more. Looks like Chevy has a Find 1991 CHEVROLET 5. 5001 - 1971-76: 333881 : 350 Chevy 991 casting cutt away pictures. Post by mike walsh » Sun Jul 18, 2010 1:30 am. I knew they were truck heads, small valves, but not much more. 88 EV and taper seat Hello everyone. I was going to use them on a stock build and never did. If you use Find 1993 CHEVROLET 5. Stock valve sizes are 1. Vektor Performance is a Porsche Performance Products company . 50 993 75cc 2. There is a lot more meat for Unless you try back to back tests driving with a new design vs the 990s you'll be happy. Bryon So I am researching a head swap for my 350, I have those awful 76cc smog heads but a good bottom end with 4 valve relief flattop pistons. The following information on porting deals with 23-degree Chevy heads pretty much across the board. , Catalytic converter $50. casting # chamber vol. 991@97 mph Chevrolet Small Block Heads . 94 intake Chevy 991 heads need to be gone through. gxr vhrqwx xuefb sdchlywt rvmitwy qmx qog wxfio wcjv whhtdx