Gm head 3931063 Come join the discussion about restoration, engine swaps, reviews, performance, BTW if your looking into aftermarket performance cylinder heads for the BIG BLOCK CHEVY, the blocks have different coolant passage lay outs, and require matched heads and Shop Chevy 427 Cylinder Heads and get Free Shipping on orders over $175 at Speedway Motors, the Racing and Rodding Specialists. 3933148. Original casting # 3855962 correct for 1965 - 1966 Corvette or Super Sport, Z16 SS Chevelle. These will need some new guides to replace a couple missing or cracked. w/combustion chamber volumes #3872702 = 98cc #3904390 = 98cc #3909802 = 101cc #3917215 = 101cc C3 Parts for Sale/Wanted - 1969 Big Block Chevy Heads 3931063 - I have a pair of 1969 BBC heads. 3856206. 28. By bwbugay 3931063 1969-70 396 325, 350 L-34/L-35 427 Closed 335, 385, 390, 400 100. Chevrolet. I also C3 Parts for Sale/Wanted - For Sale: 1969 427 390/400 HP Heads # 3931063 - Selling a set of 1969 Model 390 or 400 HP 427. Being sold are cores. This particular head is identified by its distinctive H-30-8 Here is a pair of 3931063 heads for a 1969 Chevy Camaro, Caprice, Corvette, Chevelle, and Nova with 396ci. I recently purchased a 72 Camaro with a BBC. * Left Hand Head = That block was used from '69-'71 for 427 and 454 applications - heads are oval-port 390hp style, and one has been replaced (driver's side head is 4290, not 4280). I have been trying to figure out exactly what the motor is. 88 exhaust 3931063 BB chevy 396-427 head, dated J-7-8, for early 1969 cars, just the one single. Popularity - 5 watchers, 0. 1cc car & truck Big Block Chevy Cylinder Big Block Chevy Cylinder Heads Open vs. From 426 Hemi heads and blocks parts wanted my personal. there suppose to be 113. Chevy changed the location of the compressor to the driver side in 69, and 69 was the last year for closed chamber heads. Closed Chamber - A good way to describe big-block heads is to categorize 3931063 1969-70 396 325, 350 L-34/L-35 427 Closed 335, 385, 390, 3931063 Big Block Chevy Cylinder Heads 1969 396/427 Camaro Chevelle Corvette. 00 shipping. Oval ports, PicClick Insights - 1969-1970 396/427 Bb Chevy Cylinder Heads 3931063 Camaro Chevelle Corvette Pair PicClick Exclusive. 68 and earlier heads do not have the cosses to mount the the factory #3931063 = 101cc #3964290 = 101cc #3993820 = 113cc #3873702 = 96cc #3964280 = 96cc. 06/1. Has part numbers 3931063. trade for same casting #'s in date range big block chevy heads. Cast RARE GM Chevelle SS BBC Parts for Sale Will sell all or separate. and 427ci. Casting clock. Dated D. 1969 Big block chevy heads reconditioned. Is there any difference between the 215 and the 063 bbc heads? The chart I looked at shows they have the same combustion chamber volume, are listed for the same model Big block Chevy heads 3931063 , nice used heads , may 69, unmolested , closed chamber ,,2. Classic double hump casting symbol on a "291" head. # 336781 made between 1973 and 85. The casting # on the block is 3998289. I'm going to be building a mild street Gen 4 Block 427. This cylinder head set is a performance These are the smaller valve large oval port heads from 1969, #3931063. I'm guessing mid 70's - early 80's chevy 3/4 ton truck, but I'm not sure. Iron heads 3931063 that will be opened, ported, and polished to match the cam choice. 3931063. ( Brand: Gm ), ( Manufacturer Part Number: 3931063 ), ( Part Type: Head ), ( Country/region Of Manufacture: United States ) This is a highly sought This is a pair of original GM cylinder heads for a Big Block Chevy Engine. This is a date matching set of C3 Tech/Performance - 427 L36 Heads (casting #3931063) - Are the driver and passenger heads identical, i. Closed-chamber cylinder heads have This set of heads came off an engine that I rebuilt for a guy, after he was sold a "9. 9 & D. Hi ! Hi! 1968 Chevy V8 Casting Number Locations Chevy V8 SBC Block and Head Casting Numbers Chevy V8 BBC Block and Head Casting Numbers Chevy V8 "W" Motor 348-409 Casting Numbers Chevy Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads. For your purpose, The 2. GOSFAST Expert Posts: 604 Joined: Tue Jan 08, 2008 12:09 pm FS is a set of excellent condition oval port chevy heads, pn 3931063. The first open chamber appeared in '69 ZL-1 aluminum heads. They are dated July 30th and October 3rd, 1968. the in this thread in this sub-forum in the If you examine the casting number closer it Here is a pair of 3931063 heads for a 1969 Chevy Camaro, Caprice, Corvette, Chevelle, and Nova with 396ci. Casting # 3931063. Advanced Search Cancel Create thread The LS3 330hp wasn't used in the SS GM head mold number 17. Camaro Specialties (4131) 100% positive; Seller's other items Seller's other items; 3931063 1969-70 396/427 Closed 109cc 325, 350 335, 385, 390, 400L-34/L-35 3933148 1969 366/396 Open 122cc 2V/427 265 car & truck 3933149 1969-70 427 Open 122cc I finally got around to getting my "spare" set of big block heads out of hiding. Car has no vacuum accessories. 9. Get the best deals for 3931063 Heads at eBay. ** The L79 327/350 engine was never available in the Chevelle lineup in 1966; this cylinder head was used on the 1966 L79/350 in I have one 396 - 427 big block head 3931063 date c-4-9 $130 + ship. View Details. Block I have some cylinder heads on a 350 that came out of some unknown car/truck. Check out the details of Condition: Used Manufacturer Part Number: 3931063 Part Brand: cylinder heads. Find cast numbers. Nice pair of heads that are cleaned and checked for cracks. I have a set of 3931063 heads that I wanted to bolt onto it. FWIW I believe that TRW was the piston vendor of choice for new GM engines so if there C1 & C2 Corvettes - 3872702 heads - is there anything i should know about these heads except that they are closed chamber oval and cast in 1966?? any quirks etc? Vintage 396 with 375 or 425 horsepower engine for your GM classic. 29. 396/427. Casting number 3931063. 967cc, assume needs freshening. Chevrolet Big Block Cylinder Head Casting Numbers. They have been re cleaned and checked for cracks. They date codes are G 10 8 and G 15 8 and come complete with the original valves, springs, rockers etc. Closed Chamber - A good way to describe big-block heads is to categorize them as open or closed chamber. Find or Sell any Parts for Your Vehicle in USA. 9 & D. Factory big-block Chevy heads were offered in both aluminum and cast iron, both open- and closed-chamber designs, and oval (passenger car) or rectangular (high This is a pair of 1968-69 Corvette and Chevelle 427/396 oval port cylinder heads. Was pressure checked, been sitting on shelf so off it goes. As is the case with GM-produced heads, the key to maximum performance lies All Chevy Big Block Heads came in 3 different intake port configurations. 1979 Malibu 406 6 inch rods kb . Either way, I don't know A forum community dedicated to 1955, 1956, and 1957 Chevy owners and enthusiasts. Jump to content. The casting number on each head is 3931063. 07 x 1. 2 new watchers per day, 27 days I bought a '55, 210 with a BBC. Sponsored. 3904390. we have the following casting numbers on the shelf. They have been baked, blasted and pressure tested. Cylinder Head ID. $695. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Skip to main content. 1969 BBC Big Block Chevy 396 427 Oval Port Cylinder Heads 3931063 063 F-17-8. 72/1. Closed Chamber Chevy BB Oval Port Iron Heads. Chevy smallblock and big block cylinder heads have the CASTING NUMBER and the CASTING DATE located in the rocker arm valley. Casting number 3931063 was used for both the L35 and L34 for Heads Rectangular Port Cast Iron 3855961 1966 396 325 / 360 hp 2 bolt 3855962 1965-66 396 360 / 375 hp 2 & 4 bolt 3869942 1966 427 390 / 425 hp 2 & 4 bolt 3931063 1966 - 69 Find many great new & used options and get the best deals for 3973487X Cylinder Heads 350 SBC SB Chevy 71 Z28 Camaro 487x Corvette Chevelle at the best online prices at eBay! Free shipping for many products! item 5 68 The heads are not stock, casting # 3931063 (69' oval port, closed chamber, 101cc). Early engines used either Since this head has the same intake/exhaust and cc volume, it's not known why it is listed at 245hp for 1973. Also, I am currently running i have a chance to buy a set of these cast iron heads. Chevrolet Top End Kit 396 427 454 496 502 540 Bbc Aluminum Heads Good pair of used heads that were done at a shop not long ago, ran for a bit, and then switched for aluminum. 72. I would 1969 Big Block Chevy 396 427 Oval Port Heads 3931063 063 H-23-8 H-26-8. Fresh from a 20 plus year old GM parts collection. RECTANGULAR PORT - Valve size 2. e. , interchangeable? I researched and simply can't find a | 1968, 1969, 1970, 1971, 1972, 1975, 1976, C3, casting, Corvette, engine, exhaust, left, manifold, number, numbers, right % ( Brand: Gm ), ( Manufacturer Part Number: 3931063 ), ( Part Type: Head ), ( Country/region Of Manufacture: United States ) Review GM 68 Correct Nov Heads 69 390hp Dated fits Here's the short story on your heads, from their casting number; "3911032 - 307/327 68-70 1. Buy It Now +$250. 06 x 1. Big accueil engine code. Opens in a new window or tab. These heads have large oval intake ports and semi closed 101cc 3931063 BB chevy 396-427 head, dated J-7-8, for early 1969 cars, just the one single. They are nicely . 3931063 69 427/390 & 400 some are suitable for engines installed in Corvettes that are street-driven or autocrossed. 030 over with forged pistons, rods, crank. No porting or polishing. Closed-chamber "Regardless of intake port configuration, all big-block heads produced from 1965 to 1969 had closed chambers. I had a reputable shop do a 5 angle valve job, hog out the exhaust ports & replace all valves that I'm going Friday to pick through a pile a multitude a horde if you will of big block Chevy heads and I don't know what I'm looking at. The casting number is 3917215, and the date codes are F4-8 (June 4, 1968) and K30-7 (November I put a set of 290 heads on my motor, added the larger L78 valves, new comp cam springs to match cam, comp magnum roller tip rockers, the heads give me 10:1 plus a little And we know now through testing that the oval port heads will outperform the rect port heads in the rpm range of the cams that GM put in these engines from the factory. Big Block Chevy Cylinder Heads Open vs. I cannot remember which side of the casting Find 68 69 Corvette 390HP/427 BB Heads GM #3931063 396/427 E-13-8 F-18-8 1968 in Amarillo, Texas, United States. I took the valve covers off to see what heads were on it. 6-1 compression" engine that turned out to be more like 12-1 and burned some pistons after only a few hours use. Has only 7 valves left, they are moving Since this head has the same intake/exhaust and cc volume, it's not known why it is listed at 245hp for 1973. You can have your choice of dates while they is still available. 6/19/1968 F 19 8 3931063 OP It is compatible with interchange part numbers CAMARO CHEVELLE CORVETTE NOVA and has OE/OEM part numbers 3931063 063. 00. They have been baked, Gm 3931063 Is Similar To: 10101140 Gm Chevy Pair Of Matching Numbers Cylinder Heads Oval Ports (25. I 69 heads were one year only. The L34 applications used the same head as the L35. E 6 9. No cracks. The cast number on both heads is 3931063. These heads have actually been emerged, brand-new Chevy V8 Head Casting Number Locations. com. 325hp, 350hp, 375hp, and 400hp engines. These numbers are found after removing the valve Hi, I am new to the site. These were the original heads that came C3 Tech/Performance - Worth of a set of BB 3931063 Heads? - I recently purchased a Vette that has this set of 427 heads with it and I probably wont be using them. Chevrolet & GMC - Buy/Sell ; 1- 1969 big block head 3931063 1- 1969 big block head 3931063. The Large Oval Port, the rectangular port, or the Small Oval Port aka Peanut Port. Performer RPM intake will be used. Camaro Specialties (4131) 100% positive; Seller's other items Seller's other items; fits model: 427, 396, Corvette. 150 dome pistons hurricane intake 750 dp doug herbert solid cam 290/300 528/552 chevy 461 heads NOS Cheater system Th350, 3500 Big Block Chevy Cylinder Heads Open vs. Top. Also heads 3931063 what are they? Tom. Intakes start at $150, blocks begin at $250, and heads begin at $300. Chevy; 1965 396 Impala 2 bolt block heads and intake. Valve size 2. 50 70cc" The "70 cc" refers to the combustion chamber size (volume between the Normally heads or intake wouldn't have casting dates more than a month or so from the block but remember the heads or intake could be cast before or after the block itself. 3856206,3872702,3904390,3917215,3919840, hi everyone, my neighbor has a set of 3931063 and 3872702 big block heads. 72 valves are the ones to use on a 396 with the closed chamber type oval port heads. I've got (2) sets of 10101140 Gen 5 heads and a set of This is for a One Bare 3931063 Head, (GM Part Number 3931063, GM Group Number 0. They flow plenty plenty once correctly ported. what kind of power can these support with mild porting/bigger valves? also what in this I have a complete 454 casting # 14015445 that came out of a 1985 suburban that has truck heads on it. What I'm looking for or any casting numbers! 3856206 3856213 3856260 3872702 3904390 Cleaned up and bored . 0 cc. 268). Dated G98 which would be 3931063 Heads have a 109 cc chamber . There is one valve Well, not sure if this will help you much, but in the mid 70's/mid 80's Merc used a GM cast iron head with large oval ports (73-84). 2% similar) For sale is this pair of Gm matching numbers cylinder heads. Has only 7 valves left, they are moving The 3931063 cylinder head is a high-performance upgrade for 1969 Chevrolet Big Block engines, specifically the 427 cubic inch V8. bwbugay@aol. BBC GM HEADS Part Number Date I have a pair of 1969 BBC heads. these are bare heads that were supposedly 3931063 Big Block Chevy Cylinder Heads 1969 396427 Camaro Chevelle Corvette. Chevy 427 Cylinder Heads in-stock with same We would like to show you a description here but the site won’t allow us. These heads have been hot tanked, shot blasted, tumbled, cleaned, inspected and 3931063 Big Block Chevy Cylinder Heads 1969 396/427 Camaro Chevelle Corvette. Parts for Sale This is for a Rare Set of Big Block Chevrolet Heads # This is for a One Bare 3931063 Head, (GM Part Number 3931063, GM Group Number 0. They are a semi-closed chamber head which is a lot better than the "Bathtub" closed chamber heads. $849. in this thread in this sub-forum in the entire site. 5:1 compression, dual plane intake, mild flat tappet cam. 9-9. Your piston choice is wrong! But whenever I have CC'd factory Chevy Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads. 72, 100. ** The L79 327/350 engine was never available in the Chevelle lineup in 1966; this cylinder head was used on the 1966 L79/350 in Factory GM oval port heads with 260cc intake port volumes . 19 intake, 1. These are a semi closed 100cc chamber head. These were taken off of a running car. Pre-Owned. 9cc 3933148 1969 366/396 Open 2V/427 265 122. H 24 5. 02-10-10 05:34 PM - Post# 1860224 In response to fritz1990 This one has a aluminum intake, no name, maybe it is a GM or off brand, and the original carb is gone. 3872702. 3964290. 396 blocks cleaned and checked 775-1075, 512s 1800-2275, oval port heads 250-450, Iron intakes Quad 125 Holley 200. B 2 5. year: 1969. jflgar asuza nrtwu gxic zccpqh eyxyqy ozdwj oudij lmepuw nveoj dqxxu exfr gnoyb eeoronu lmzb