Its pretty easy to mistake your 4th digit of "8" for the cyl heads actual number "3". Heads have 76cc combustion chambers with new 2. 2 small block Chevy / GM heads. Nov 12, 2011. Casting number is 462624. Different chamber volumes, port volumes, port locations, valve sizes, etc. 60″ stainless swirl polished valves and 62cc exhaust runners. The heads are dated L20 & C281 (December 2, 1970 & March 28, 1971). 6 1970-72 350 2. 5 1968-73 3973487 350 2. The castings are 3973487. The 487 casting with the induction hardened seats was the 993 head. Small Block Casting numbers. Pair of Chevy GM 350 Small Block 1975-1986 Cast iron Heads 462624 Estate Found, Casting Number 462624, Corvette 350ci ( written on paper with them) They are in good condition, no visible cracks or damage. Inline (6 cyl) Engines. 50 valves, and high performance 2. I replaced the entire distributer assy last year. The easiest way to reference any production head is with the last three digits of its casting number. 7: 78-79: OHV; MFI; aluminum heads, right hand dipstick. Select Cylinder Head Group ALL Head Codes 262, 265, 267 302, 305 or 307 302 Only 327 350 400. Small Block Chevrolet Cylinder Head casting numbers /minuit10 / corvette /head chevy /corvette l82. The block casting number is located on the drivers side - top rear - near the flywheel attachment. Casting #333882. There are Hi-performance springs. 6, these heads. Choose Group to View Cylinder Head Codes. 2 small block Chevy / GM heads. The head casting number was 3973487X. 6: 165-330: Corvette/Chevy II Aluminum 327. SMALL BLOCK HEAD CASTING NUMBERS. Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads 3973487. Nov 12, 2011. I've found some standard heads that I have with 3973487 casting number, are these any good? I know they are date stamped 1972 and have a 75cc combustion chamber and were on a 350 LT1. 875 inches by 4. 125 inches and a compression ratio of 8. SBC Head Casting Numbers. The letter stands for the month, the next one to two digits are the day of the month and the last is the year. Casting Number. 02 stainless intake and new 1. 02 cylinder heads. Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers. 82-86 3973487. All cylinder heads are pressure tested to assure a leak-free casting. Pick up in Edison NJ. The castings are 3973487. The heads are dated L20 & C281 (December 2, 1970 & March 28, 1971). The castings are 3973487. There are Hi-performance springs. About Numbers Head Casting Chevy. There are at least 6. The easiest way to reference any production head is with the last three digits of its casting number. No shipping. World Products 043600 – Cylinder Head Cast Iron Chevy Small Block S/R 170cc 76cc 23Degree 1. I pulled the intake and valve covers on my 72 C10 to fix some oil leaks. Small Block Mopar Head Casting Numbers: Casting # Chamber Vol. SBC Head Casting Numbers. I've found some standard heads that I have with 3973487 casting number, are these any good? I know they are date stamped 1972 and have a 75cc combustion chamber and were on a 350 LT1. I just ran a search on the head casting numbers on the 350 in the '71. View on Amazon. Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads Find cast numbers. The casting number is 3973487. Nov 12, 2011. Same casting numbers were used with 1/2 ton PU and Impalas, Novas etc. 6 1970-72 350 2. 29 – 36 3 main bearing 6s had oil filler and dipstick on left and serial number by fuel pump. Chevrolet Head Casting Number Reference Small Blocks 330545 350, 73, Corvette, 76cc, 2. The head casting number was 3973487X. NO GUARANTEE I'm upgrading Heads and Intake to get more zooom. Casting number 12558062 is a Vortec head that is available from Chevrolet Performance. About Numbers Head Casting Chevy. NO GUARANTEE I'm upgrading Heads and Intake to get more zooom. Upon some quick research these are not the original heads because they were only used in 71-72. Jun 08, 2017 · The castings are 3973487. LX9 – Left Head – casting # located above spark plug holes on exhaust side: 523: CH65146: $185. New valve seats have been installed when needed. I checked on Mortec and found 3973487 is used on 70-72 350's, and has 75cc chambers. Choose Group to View Cylinder Head Codes. Search: Chevy Head Casting Numbers 462624. It wouldn't be the first time it has happened. Small Block Casting numbers. They are 3973487. CHEVY CASTING NUMBERS. The casting number is a six-, seven- or eight-digit number, depending on the model year and model of the vehicle, found stamped on the head. About Head Numbers Chevy Casting 462624. Block 3970010 heads 3973487 Discussion in ' Same casting numbers were used with 1/2 ton PU and Impalas, Novas etc. 60 stainless exhaust valves. $900 for all or will. 500″ Straight Plug. Select Cylinder Head Group ALL Head Codes 262, 265, 267 302, 305 or 307 302 Only 327 350 400. Leave a contact number or I wont reply. I just ran a search on the head casting numbers on the 350 in the '71. Block 3970010 heads 3973487 Discussion in ' Same casting numbers were used with 1/2 ton PU and Impalas, Novas etc. Heads have 76cc combustion chambers with new 2. Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads 3973487. Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers. Jun 08, 2017 · The castings are 3973487. Any help is greatly appreciated!. I actually went through several lists and made some corrections before making this list. The heads are dated L20 & C281 (December 2, 1970 & March 28, 1971). The casting number is 3973487. 6 1970-72 350 2. SBC Head Casting Numbers. Casting numbers 462624 and 3998993. For example, the casting number 3743096 belongs to 327-cubic-inch V-8 engines on the 1962 to 1967 GMC pickup trucks. Re: Looking for info on head casting number #3973487X GM21 5532 (KJL) 3973487's were used 71-73 two versions, intermediate, with 1. A friend of a friend is selling his car and is also trying to get rid of heads with casting-# 3927186. $900 for all or will. The bigger heads to follow were the "double-hump" heads championed by the mid-'60s 327 engines. NO GUARANTEE I'm upgrading Heads and Intake to get more zooom. Discussion Starter · #3 · Jan 27, 2013. Cylinder heads must be unaltered approved OEM and minimum 76 cc combustion chamber. Heads for the same period. The castings are 3973487. (engine it came from is a 327ci) All I can find on these heads are: 1968-69 302 2. The heads are dated L20 & C281 (December 2, 1970 & March 28, 1971). 60 stainless exhaust valves. 02 stainless intake and new 1. chevy2much said: The 3973487 are the only ones worth using in my opinion. It is usually found on the top of the head in between two valves and the rocker arm studs. 6, these heads. Got some numbers, got some id sites but don't completely understand them HELP!!!!!! 1st 3927185 so far I've figured out there 69-76 307/327/350 70CC (pair) 2nd 333882 these are supposed to be 74-80 76CC that's all. Jun 08, 2017 · The castings are 3973487. Pair of Chevy GM 350 Small Block 1975-1986 Cast iron Heads 462624 Estate Found, Casting Number 462624, Corvette 350ci ( written on paper with them) They are in good condition, no visible cracks or damage. World’s S/R cylinder Head are the preferred alternative to expensive OEM castings or junkyard rebuilds. NO GUARANTEE I'm upgrading Heads and Intake to get more zooom. 00 Pair Of 454 Gm 68-79 Original Small Block Chevy Cylinder Heads Casting 3973487. Casting Number/Date for Big Block Iron Heads Available from Tracy Performance. Casting number is 462624. Example: A239 if its is a 235 means Jan 23. SMALL BLOCK HEAD CASTING NUMBERS. Call to discuss. Heads for the same period. Closed Chamber Chevy BB Oval Port Iron Heads. 6 No information on combustion chamber size, or. Casting number 12558062 is a Vortec head that is available from Chevrolet Performance. This is a fully assembled racing performance head with every possible detail crafted into place to deliver extreme performance. 33-34 "standard. A friend of a friend is selling his car and is also trying to get rid of heads with casting-# 3927186. Search: Chevy Head Casting Numbers. all there; valves, springs, rockers, pushrods, even a pair of valve covers. 6, these heads. Call to discuss. Upon some quick research these are not the original heads because they were only used in 71-72. There was no listing for 8978487, so you might want to clean the numbers really good to see if that's what you. Leave a contact number or I wont reply. Any help is greatly appreciated!. Heads have 76cc combustion chambers with new 2. Search: Chevy Head Casting Numbers. 06, Exhaust 1. Discussion Starter · #1 · Dec 27, 2005. Click to expand Ok. txt) or read online for free. SHARE POST #1. Must pick them up at an arranged location. 60-inch valve sizes. 33-34 "standard. About Head Numbers Chevy Casting 462624. Chevy Head Casting Numbers 462624 6 valves 333881 350, 74-75, 76cc, 2. Flat top or dish pistons only, no gas ported pistons. Location: Ohio. I replaced the entire distributer assy last year. Re: Looking for info on head casting number #3973487X GM21 5532 (KJL) 3973487's were used 71-73 two versions, intermediate, with 1. Jun 08, 2017 · The castings are 3973487. I pulled the intake and valve covers on my 72 C10 to fix some oil leaks. These head castings were used in various other models of the Chevrolet lineup such as the passenger car, Chevy II/Nova, Camaro and Corvette. Choose Group to View Cylinder Head Codes. Upon some quick research these are not the original heads because they were only used in 71-72. I'm building up a 383 that I have and was going to go with vortec heads. Joined Feb 9, 2005 · 138 Posts. 3973414 - 370 hp - 1970. It's not going in the C10 but I will find a different vehicle to put it in and make a track car out of, probably an F body. Which engines were these heads used on? This is the only information I was able to find. This is a fully assembled racing performance head with every possible detail crafted into place to deliver extreme performance. Approximately 45000 miles on them. Casting #333882. 60-inch valve sizes. Discussion Starter · #3 · Jan 27, 2013. I actually went through several lists and made some corrections before making this list. I have these 14014416 casting number heads and was wondering what facts you guys could give me about them (I know they are 305 heads), and I would also like to know how well they would work out on a 350. $900 for all or will. The heads are dated L20 & C281 (December 2, 1970 & March 28, 1971). Heads for the same period. Same casting numbers were used with 1/2 ton PU and Impalas, Novas etc. 02 stainless intake and new 1. Jun 08, 2017 · The castings are 3973487. The 487 is one of the best open chamber cylinder heads. I plan to use a solid cam and lifters, NA with an. I replaced the entire distributer assy last year. Heads have 76cc combustion chambers with new 2. Cylinder heads must be unaltered approved OEM and minimum 76 cc combustion chamber. The casting number is Chevy Rear Differentials for Sale. Which engines were these heads used on? This is the only information I was able to find. The castings are 3973487. This casting # has been used in many different versions of this aluminum 18' and 15' Bowtie race head. Chevrolet Head Casting Number Reference Small Blocks 330545 350, 73, Corvette, 76cc, 2. 02 cylinder heads. Rebuilt Pair 5. Casting number is 462624. 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 V8 Crankshaft Casting Numbers Chevy V8 Crankshaft Journal Sizes Chevy V8 Bore and Stroke List Chevy V8 Notes SBC Crate Motors BBC Crate Motors SBC Cylinder Heads Holley Carb. Select Cylinder Head Group ALL Head Codes 262, 265, 267 302, 305 or 307 302 Only 327 350 400. Heads have 76cc combustion chambers with new 2. About Head Numbers Chevy Casting 462624. 02 stainless intake and new 1. I plan to make this engine into a race build. No shipping. The heads are dated L20 & C281 (December 2, 1970 & March 28, 1971). View Details. The castings are 3973487. "Still available" Messages won't be answer. Small Block Casting numbers. It's not going in the C10 but I will find a different vehicle to put it in and make a track car out of, probably an F body. It can be machined for 2. 6: 165-330: Corvette/Chevy II Aluminum 327. 3927187 - 350 hp - 1970. Pick up in Edison NJ. Some cylinder heads have been welded or repaired. Casting number is 462624. Joined Feb 9, 2005 · 138 Posts. "Still available" Messages won't be answer. They were used on lt1 engines in 1971-1972. (engine it came from is a 327ci) All I can find on these heads are: 1968-69 302 2. Casting numbers in Gen I cylinder heads are found near the valve spring seats under the valve cover. Casting numbers 462624 and 3998993. Oct 10, 2012 #1 The numbers you've given are the same combination used on the 1971 LT1 Z28 engine. The 487 is one of the best open chamber cylinder heads. The factory rated it as a 330 hp engine. I know that Chevy Casting Numbers are on several sites on the World Wide Web but I thought it would be a good idea to list them here too. The Chevy cylinder head casting codes are one of the best ways to identify a Chevy cylinder head. New valve seats have been installed when needed. I've got a bunch of heads laying around for small blocks. Block 3970010 heads 3973487 Discussion in ' Same casting numbers were used with 1/2 ton PU and Impalas, Novas etc. Got some numbers, got some id sites but don't completely understand them HELP!!!!!! 1st 3927185 so far I've figured out there 69-76 307/327/350 70CC (pair) 2nd 333882 these are supposed to be 74-80 76CC that's all. Different chamber volumes, port volumes, port locations, valve sizes, etc. Casting numbers 462624 and 3998993. Block casting numbers for Corvette from 70 to 79 are as follows -3970010 - 3970014. Search: Chevy Head Casting Numbers 462624. The Chevy cylinder head casting codes are one of the best ways to identify a Chevy cylinder head. They were used on lt1 engines in 1971-1972. NO GUARANTEE I'm upgrading Heads and Intake to get more zooom. Chevy Numbers Decoding; Search. Example: A239 if its is a 235 means Jan 23. Casting number 12558062 is a Vortec head that is available from Chevrolet Performance. I've found some standard heads that I have with 3973487 casting number, are these any good? I know they are date stamped 1972 and have a 75cc combustion chamber and were on a 350 LT1. 2 small block Chevy / GM heads. The 487 is one of the best open chamber cylinder heads. I replaced the entire distributer assy last year. The casting number is Chevy Rear Differentials for Sale. The casting number is 3973487. Would these be good on a mild performance engine? Thanks, Alex aldixie, Jun 10, 2009. Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers. 02 stainless intake and new 1. Pros 1969-1970 Corvette/Camaro Used 3927186 DZ Z28 302 350 SBC Head/Ea Guaranteed 69. 00 Pair Of 454 Gm 68-79 Original Small Block Chevy Cylinder Heads Casting 3973487. Engine Casting Numbers: Chevrolet V8 Passenger Cars 3973487 333882 3998993 3986339 3998991: 17: 350 5. 50 valves, and high performance 2. Its pretty easy to mistake your 4th digit of "8" for the cyl heads actual number "3". 6 1970-72 350 2. Chevy Head Casting Numbers 462624 6 valves 333881 350, 74-75, 76cc, 2. Cylinder Head ID. Speedmaster Pce2812009 Assembled Angle Cylinder Heads For Chevy Small Block 350. I'm building up a 383 that I have and was going to go with vortec heads. Block casting numbers for Corvette from 70 to 79 are as follows -3970010 - 3970014. Chevrolet Head Casting Number Reference Small Blocks 330545 350, 73, Corvette, 76cc, 2. Casting Calculator is an Ideal Tool for computing and converting Precious Metals and Alloys in Lost Wax Casting. SHARE POST #1. Chevy Numbers Decoding; Search. Used a lot of those. Example: A239 if its is a 235 means Jan 23. They came on a NAPA crate engine. Got some numbers, got some id sites but don't completely understand them HELP!!!!!! 1st 3927185 so far I've figured out there 69-76 307/327/350 70CC (pair) 2nd 333882 these are supposed to be 74-80 76CC that's all. 60: over the counter 23 degree, angle plug, 196 cc intake runner, Aluminum. The easiest way to reference any production head is with the last three digits of its casting number. Premium Member. 60 stainless exhaust valves. Only Chevelle-specific information is listed here to conserve space. Discussion Starter · #3 · Jan 27, 2013. I have these 14014416 casting number heads and was wondering what facts you guys could give me about them (I know they are 305 heads), and I would also like to know how well they would work out on a 350. Casting # Years made Valve Size HP levels 3973487: 68-79: 1. I've got a bunch of heads laying around for small blocks. Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads 3973487. I've found some standard heads that I have with 3973487 casting number, are these any good? I know they are date stamped 1972 and have a 75cc combustion chamber and were on a 350 LT1. Heads have 76cc combustion chambers with new 2. 72, Closed Chamber, 98. It is completely assembled with 1. Choose Group to View Cylinder Head Codes. View on Amazon. The only SBC cyl heads ending in 487 are 3876487 and 3973487 (along with 3973487X) but there is no X on your cyl heads. 50 valves, and high performance 2. Premium Member. It is usually found on the top of the head in between two valves and the rocker arm studs. 5 1968-73 3973487 350 2. 60″ stainless swirl polished valves and 62cc exhaust runners. Hence the positive number in the calculator. 02 stainless intake and new 1. Leave a contact number or I wont reply. Small Block Chevrolet Cylinder Head casting numbers /minuit10 / corvette /head chevy /corvette l82. Pros 1969-1970 Corvette/Camaro Used 3927186 DZ Z28 302 350 SBC Head/Ea Guaranteed 69. Chevrolet Head Casting Number Reference Small Blocks 330545 350 73 Corvette 76cc 2. Only Chevelle-specific information is listed here to conserve space. About Numbers Head Casting Chevy. Any help is greatly appreciated!. Physical characteristics: Before 1925, the 4 cylinder engines had the ignition distributor attached behind the gear driven generator so no dist hole in block. Which engines were these heads used on? This is the only information I was able to find. 6: 165-330: Corvette/Chevy II Aluminum 327. Select Cylinder Head Group ALL Head Codes 262, 265, 267 302, 305 or 307 302 Only 327 350 400. View on Amazon. A remanufactured cylinder head is a head that has been rebuilt with parts that are still serviceable. Casting numbers 462624 and 3998993. 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 V8 Crankshaft Casting Numbers Chevy V8 Crankshaft Journal Sizes Chevy V8 Bore and Stroke List Chevy V8 Notes SBC Crate Motors BBC Crate Motors SBC Cylinder Heads Holley Carb. 7: 78-79: OHV; MFI; aluminum heads, right hand dipstick. 3927186 - 300 hp, 350 hp, 370 hp - 1970. 60 stainless exhaust valves. The 487 heads need to be cleaned up big time, magged and checked for problems. Upon some quick research these are not the original heads because they were only used in 71-72. There are Hi-performance springs. The castings are 3973487. Approximately 45000 miles on them. I just ran a search on the head casting numbers on the 350 in the '71. NO GUARANTEE I'm upgrading Heads and Intake to get more zooom. Search: Chevy Head Casting Numbers. Up for sale is a professionally rebuilt pair of Small Block Chevy 2. Pick up in Edison NJ. Block casting numbers for Corvette from 70 to 79 are as follows -3970010 - 3970014. Only Chevelle-specific information is listed here to conserve space. Casting #333882. 9: V6: 06-10: LZ4 – Left Head – casting # located above spark plug. Cylinder Head Castings Information A Great Resource for Chevrolet Owners. 02 stainless intake and new 1. Cylinder Head ID. About Numbers Head Casting Chevy. 60″ stainless swirl polished valves and 62cc exhaust runners. Engine Casting Numbers: Chevrolet V8 Passenger Cars 3973487 333882 3998993 3986339 3998991: 17: 350 5. hi does any one know. This seems very confusing but it is because even though it is a -cc on the piston, those same cc's are gained in cylinder volume. all there; valves, springs, rockers, pushrods, even a pair of valve covers. LX9 – Left Head – casting # located above spark plug holes on exhaust side: 523: CH65146: $185. Pair of Chevy GM 350 Small Block 1975-1986 Cast iron Heads 462624 Estate Found, Casting Number 462624, Corvette 350ci ( written on paper with them) They are in good condition, no visible cracks or damage. Discussion Starter · #1 · Dec 27, 2005. The casting number is 3973487. 6 Valves 333882 350-400 74-80 76cc 160 / 60cc Ports 340292 "Turbo" Angle Plug, 64cc, 2. Chevy Head Casting Numbers 462624 6 valves 333881 350, 74-75, 76cc, 2. It can be machined for 2. 3 Gm Gmc Chevy Cylinder Heads 799 Casting Number Ls2 Ls6. 06, Exhaust 1. They are 3973487. Pick up in Edison NJ. Pros 1969-1970 Corvette/Camaro Used 3927186 DZ Z28 302 350 SBC Head/Ea Guaranteed 69. Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads Find cast numbers. The heads are dated L20 & C281 (December 2, 1970 & March 28, 1971). 82-86 3973487. Different chamber volumes, port volumes, port locations, valve sizes, etc. Cylinder Head Castings Information A Great Resource for Chevrolet Owners. 5: V6: 04-07: LX9 – Right Head – – Sending Unit Below Freeze Plug – casting # located above spark plug holes on exhaust side: 523: CH65147: $185. Check this casting carefully to determine which features it may have. Search: Chevy Head Casting Numbers. 00 Pair Of 454 Gm 68-79 Original Small Block Chevy Cylinder Heads Casting 3973487. 6 I would say, looking at the 2. 5 1968-73 3973487 350 2. About Numbers Head Casting Chevy. It is usually found on the top of the head in between two valves and the rocker arm studs. Casting # Years made Valve Size HP levels 3973487: 68-79: 1. It can be machined for 2. Up for sale is a professionally rebuilt pair of Small Block Chevy 2. 2 small block Chevy / GM heads. The factory rated it as a 330 hp engine. 3973487 - 270 hp - 330 hp - 1971. All cylinder heads are pressure tested to assure a leak-free casting. 60 stainless exhaust valves. The heads are dated L20 & C281 (December 2, 1970 & March 28, 1971). Engine Casting Numbers: Chevrolet V8 Passenger Cars 3973487 333882 3998993 3986339 3998991: 17: 350 5. They came on a NAPA crate engine. The casting number is 3973487. Heads have 76cc combustion chambers with new 2. Cylinder Head ID. I plan to make this engine into a race build. The heads are dated L20 & C281 (December 2, 1970 & March 28, 1971). Check this casting carefully to determine which features it may have. They were used on lt1 engines in 1971-1972. Heads have 76cc combustion chambers with new 2. 125 inches and a compression ratio of 8. chevy2much said: The 3973487 are the only ones worth using in my opinion. Discussion Starter · #3 · Jan 27, 2013. There was no listing for 8978487, so you might want to clean the numbers really good to see if that's what you. CHEVY CASTING NUMBERS. Casting #333882. Casting Number/Date for Big Block Iron Heads Available from Tracy Performance. The most famous heads are the 461 and 462 heads that offer 160-cc intake ports, 64-cc chambers, and 2. Jun 08, 2017 · The castings are 3973487. Approximately 45000 miles on them. The castings are 3973487. 3 Gm Gmc Chevy Cylinder Heads 799 Casting Number Ls2 Ls6. 6 valves 3973487 350, 71-76, 3973487 350, LT1, 75cc, 161-165cc intake port World Products Cast Iron Heads ( by part numbers ) 4351 67cc, 162cc intake port 4350 76cc, 162cc intake port. Up for sale is a professionally rebuilt pair of Small Block Chevy 2. The Chevy cylinder head casting codes are one of the best ways to identify a Chevy cylinder head. It’s not going in the C10 but I will find a different vehicle to put it in and make a track car out of, probably an F body. Flotek 102505 Aluminum Cylinder Head for Small Block Chevy. Small Block Mopar Head Casting Numbers: Casting # Chamber Vol. Flat top or dish pistons only, no gas ported pistons. Heads have 76cc combustion chambers with new 2. Search: Chevy Head Casting Numbers. Approximately 45000 miles on them. 60 stainless exhaust valves. Nov 12, 2011. Chevy Head Casting Numbers 462624 6 valves 333881 350, 74-75, 76cc, 2. Search: Chevy Head Casting Numbers 462624. I've found some standard heads that I have with 3973487 casting number, are these any good? I know they are date stamped 1972 and have a 75cc combustion chamber and were on a 350 LT1. Small Block Casting numbers. Check this casting carefully to determine which features it may have. 60-inch valves. Aluminum, angle plug, "low" port, 223cc intake port, 18' race head. Jump to Latest Follow 1 - 4 of 4 Posts. Chevrolet Head Casting Number Reference Small Blocks 330545 350 73 Corvette 76cc 2. Click to expand Ok. The Chevy cylinder head casting codes are one of the best ways to identify a Chevy cylinder head. It's not going in the C10 but I will find a different vehicle to put it in and make a track car out of, probably an F body. Re: Looking for info on head casting number #3973487X GM21 5532 (KJL) 3973487's were used 71-73 two versions, intermediate, with 1. 94s with a casting number of 3973487. Casting Number/Date for Big Block Iron Heads Available from Tracy Performance. 6 I would say, looking at the 2. Inline (6 cyl) Engines. The heads are dated L20 & C281 (December 2, 1970 & March 28, 1971). Pair of Chevy GM 350 Small Block 1975-1986 Cast iron Heads 462624 Estate Found, Casting Number 462624, Corvette 350ci ( written on paper with them) They are in good condition, no visible cracks or damage. 60 stainless exhaust valves. This seems very confusing but it is because even though it is a -cc on the piston, those same cc's are gained in cylinder volume. I've found some standard heads that I have with 3973487 casting number, are these any good? I know they are date stamped 1972 and have a 75cc combustion chamber and were on a 350 LT1. Same casting numbers were used with 1/2 ton PU and Impalas, Novas etc. Small Block Casting numbers. Select Cylinder Head Group ALL Head Codes 262, 265, 267 302, 305 or 307 302 Only 327 350 400. 29 – 36 3 main bearing 6s had oil filler and dipstick on left and serial number by fuel pump. To determine the year of 235 or 216 engines, look just above the starter on 235 or maybe remove starter on 216 and there will be a letter followed by 2 or 3 numbers. $900 for all or will. SHARE POST #1. So I have a 350 out of a 1975 C10. The casting number is 3973487. Block 3970010 heads 3973487 Discussion in ' Same casting numbers were used with 1/2 ton PU and Impalas, Novas etc. I've found some standard heads that I have with 3973487 casting number, are these any good? I know they are date stamped 1972 and have a 75cc combustion chamber and were on a 350 LT1. I found the casting number at Mortec, which said the heads could have either 1. They came on a NAPA crate engine. Chevelle V8 Cylinder Head Casting Numbers - 1964 through 1972. 2 small block Chevy / GM heads. To determine the year of 235 or 216 engines, look just above the starter on 235 or maybe remove starter on 216 and there will be a letter followed by 2 or 3 numbers. 6 I would say, looking at the 2. Casting Number/Date for Big Block Iron Heads Available from Tracy Performance. I've got a bunch of heads laying around for small blocks. Block 3970010 heads 3973487 Discussion in 'Engine Topic' started by Milligsc, Oct 10, 2012. This seems very confusing but it is because even though it is a -cc on the piston, those same cc's are gained in cylinder volume. Casting numbers 462624 and 3998993. Casting Calculator is an Ideal Tool for computing and converting Precious Metals and Alloys in Lost Wax Casting. Used with the 350 or 400 engines. I replaced the entire distributer assy last year. There was no listing for 8978487, so you might want to clean the numbers really good to see if that's what you. Pair of Chevy GM 350 Small Block 1975-1986 Cast iron Heads 462624 Estate Found, Casting Number 462624, Corvette 350ci ( written on paper with them) They are in good condition, no visible cracks or damage. "Still available" Messages won't be answer. 02 stainless intake and new 1. If you ran a 1. Bare Casting. Used with the 350 or 400 engines. Discussion Starter · #3 · Jan 27, 2013. The heads are dated L20 & C281 (December 2, 1970 & March 28, 1971). CHEVY CASTING NUMBERS. 600" valve in a 487 head you just about couldn't put hard exhaust seats in because even using a 5/16" deep seat you'd cut through to water on at least one seat pocket. Up for sale is a professionally rebuilt pair of Small Block Chevy 2. 00 Pair Of 454 Gm 68-79 Original Small Block Chevy Cylinder Heads Casting 3973487. They came on a NAPA crate engine. 6 valves 354434 262-267-30575-79 163/57 cc Ports. Small block chevy head castings; Casting # Combustion Chamber size CCs Intake valve Exhaust valve Production Years Misc Engine; 10033867: 62cc: 2. Search: Chevy Head Casting Numbers. Hence the positive number in the calculator. The casting number is 3973487. 60: over the counter 23 degree, angle plug, 196 cc intake runner, Aluminum. All cylinder heads are pressure tested to assure a leak-free casting. Check this casting carefully to determine which features it may have. txt) or read online for free. Different chamber volumes, port volumes, port locations, valve sizes, etc. I pulled the intake and valve covers on my 72 C10 to fix some oil leaks. Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads Find cast numbers. This casting # has been used in many different versions of this aluminum 18' and 15' Bowtie race head. 2 small block Chevy / GM heads. 6 1970-72 350 2. Jun 08, 2017 · The castings are 3973487. Must pick them up at an arranged location. The heads are dated L20 & C281 (December 2, 1970 & March 28, 1971). 82-86 3973487. All cylinder heads have a three angle valve cut with a blade type seat cutter. No shipping. 60 stainless exhaust valves. The casting number is 3973487. Hence the positive number in the calculator. The 487 heads need to be cleaned up big time, magged and checked for problems. About Numbers Head Casting Chevy. Casting numbers in Gen I cylinder heads are found near the valve spring seats under the valve cover. Chevrolet Head Casting Number Reference Small Blocks 330545 350 73 Corvette 76cc 2. I checked on Mortec and found 3973487 is used on 70-72 350's, and has 75cc chambers. 6 valves 3973487 350, 71-76, 3973487 350, LT1, 75cc, 161-165cc intake port World Products Cast Iron Heads ( by part numbers ) 4351 67cc, 162cc intake port 4350 76cc, 162cc intake port. Inline (6 cyl) Engines. Flotek 102505 Aluminum Cylinder Head for Small Block Chevy. 6 I would say, looking at the 2. View Details. 94s with a casting number of 3973487. Pick up in Edison NJ. Small Block Casting numbers. Choose Group to View Cylinder Head Codes. Check this casting carefully to determine which features it may have. Use these casting numbers to identify the heads you have. Pick up in Edison NJ. Heads have 76cc combustion chambers with new 2. Select Cylinder Head Group ALL Head Codes 262, 265, 267 302, 305 or 307 302 Only 327 350 400. The heads I'm using are 1. "Still available" Messages won't be answer. Same casting numbers were used with 1/2 ton PU and Impalas, Novas etc. 60-inch valves. 6 Valves 333882 350-400 74-80 76cc 160 / 60cc Ports 340292 "Turbo" Angle Plug, 64cc, 2. I know that Chevy Casting Numbers are on several sites on the World Wide Web but I thought it would be a good idea to list them here too. The casting number is a six-, seven- or eight-digit number, depending on the model year and model of the vehicle, found stamped on the head. 60 valves, and were used in 71 and 72. About Head Numbers Chevy Casting 462624. Approximately 45000 miles on them. Example: A239 if its is a 235 means Jan 23. 82-86 3973487. Its pretty easy to mistake your 4th digit of "8" for the cyl heads actual number "3". Discussion Starter · #3 · Jan 27, 2013. Any help is greatly appreciated!. Pair of Chevy GM 350 Small Block 1975-1986 Cast iron Heads 462624 Estate Found, Casting Number 462624, Corvette 350ci ( written on paper with them) They are in good condition, no visible cracks or damage. 3 Gm Gmc Chevy Cylinder Heads 799 Casting Number Ls2 Ls6. Up for sale is a professionally rebuilt pair of Small Block Chevy 2. 60-inch valve sizes. Location: Ohio. Upon some quick research these are not the original heads because they were only used in 71-72. I'm building up a 383 that I have and was going to go with vortec heads. Heads have 76cc combustion chambers with new 2. For example, the casting number 3743096 belongs to 327-cubic-inch V-8 engines on the 1962 to 1967 GMC pickup trucks. Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers. Inline (6 cyl) Engines. 3 Gm Gmc Chevy Cylinder Heads 799 Casting Number Ls2 Ls6. Oct 10, 2012 #1 The numbers you've given are the same combination used on the 1971 LT1 Z28 engine. LX9 – Left Head – casting # located above spark plug holes on exhaust side: 523: CH65146: $185. Block 3970010 heads 3973487 Discussion in ' Same casting numbers were used with 1/2 ton PU and Impalas, Novas etc. Casting # Years made Valve Size HP levels 3973487: 68-79: 1. Same casting numbers were used with 1/2 ton PU and Impalas, Novas etc. Hence the positive number in the calculator. Jun 08, 2017 · The castings are 3973487. 9: V6: 06-10: LZ4 – Left Head – casting # located above spark plug. Must pick them up at an arranged location. Pros 1969-1970 Corvette/Camaro Used 3927186 DZ Z28 302 350 SBC Head/Ea Guaranteed 69. Click to expand Ok. txt) or read online for free. 125 inches and a compression ratio of 8. Use these casting numbers to identify the heads you have. Select Cylinder Head Group ALL Head Codes 262, 265, 267 302, 305 or 307 302 Only 327 350 400. 1928 had push rod covers and 2 port head so casting surfaces in block. Physical characteristics: Before 1925, the 4 cylinder engines had the ignition distributor attached behind the gear driven generator so no dist hole in block. View Details. "Still available" Messages won't be answer. Speedmaster Pce2812009 Assembled Angle Cylinder Heads For Chevy Small Block 350. Aluminum, angle plug, "low" port, 223cc intake port, 18' race head. A friend of a friend is selling his car and is also trying to get rid of heads with casting-# 3927186. The casting number is Chevy Rear Differentials for Sale. The date code stamp is directly under the casting. There are at least 6. Leave a contact number or I wont reply. Which engines were these heads used on? This is the only information I was able to find. The heads are dated L20 & C281 (December 2, 1970 & March 28, 1971). Keep in mind that The Chevy 292 was an inline, six-cylinder engine with a bore and stroke of 3. About Head Numbers Chevy Casting 462624. Closed Chamber Chevy BB Oval Port Iron Heads. 3 Gm Gmc Chevy Cylinder Heads 799 Casting Number Ls2 Ls6. 875 inches by 4. 6 1970-72 350 2. 2 small block Chevy / GM heads. "Still available" Messages won't be answer. 6 I would say, looking at the 2. Casting number is 462624. About Numbers Head Casting Chevy. 2 small block Chevy / GM heads. 6 Valves 333882 350-400 74-80 76cc 160 / 60cc Ports 340292 "Turbo" Angle Plug, 64cc, 2. The cc for the piston is entered as a positive number on a -cc Dish or Flat top piston and a negative number on a dome piston. 3973414 - 370 hp - 1970. Small block chevy head castings; Casting # Combustion Chamber size CCs Intake valve Exhaust valve Production Years Misc Engine; 10033867: 62cc: 2. This aftermarket aluminum head presents high-grade construction materials, including an aluminum body, valve guides made of bronze, and a specialized port design. 6 valves 354434 262-267-30575-79 163/57 cc Ports. Pick up in Edison NJ. 875 inches by 4. 3927186 - 300 hp, 350 hp, 370 hp - 1970. Check this casting carefully to determine which features it may have. SBC Head Casting Numbers. 02 cylinder heads. I plan to use a solid cam and lifters, NA with an. I replaced the entire distributer assy last year. They came on a NAPA crate engine. Pair of Chevy GM 350 Small Block 1975-1986 Cast iron Heads 462624 Estate Found, Casting Number 462624, Corvette 350ci ( written on paper with them) They are in good condition, no visible cracks or damage. Jump to Latest Follow 1 - 4 of 4 Posts. Any help is greatly appreciated!. 5: V6: 04-07: LX9 – Right Head – – Sending Unit Below Freeze Plug – casting # located above spark plug holes on exhaust side: 523: CH65147: $185. 02 stainless intake and new 1. 02 cylinder heads. 02 stainless intake and new 1. Physical characteristics: Before 1925, the 4 cylinder engines had the ignition distributor attached behind the gear driven generator so no dist hole in block. Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers. About Numbers Head Casting Chevy. 3927186 - 300 hp, 350 hp, 370 hp - 1970. Used with the 350 or 400 engines. 29 – 36 3 main bearing 6s had oil filler and dipstick on left and serial number by fuel pump. 5 1968-73 3973487 350 2. To determine the year of 235 or 216 engines, look just above the starter on 235 or maybe remove starter on 216 and there will be a letter followed by 2 or 3 numbers. 500″ Straight Plug. This casting # has been used in many different versions of this aluminum 18' and 15' Bowtie race head. Heads for the same period. Speedmaster Pce2812009 Assembled Angle Cylinder Heads For Chevy Small Block 350. Casting Number/Date for Big Block Iron Heads Available from Tracy Performance.