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head and carb # questions

C3 4ME

Well-known member
Joined
Apr 29, 2006
Messages
72
Location
Mechanicsville, VA
Corvette
1979 Black L-82 4 speed
I took my valve cover off for restoration today and found casting # 462824, where for my 79 L-82 my research shows it should be a 462624. Anyone know what a 462824 is from? Also L-82's didn't have pushrod guideplates did they? Mine does but I know the engine has been rebuilt by the previous owner. Also the carb # is 17059205, where it should be a 17059210 for an L-82 4spd. Anyone know what that carb is off of? Thanks for any help ya'll can give.
 

motorman

Well-known member
Joined
Mar 7, 2002
Messages
849
Location
pa
Corvette
2008 Crystal Red Tint Coat
I took my valve cover off for restoration today and found casting # 462824, where for my 79 L-82 my research shows it should be a 462624. Anyone know what a 462824 is from? Also L-82's didn't have pushrod guideplates did they? Mine does but I know the engine has been rebuilt by the previous owner. Also the carb # is 17059205, where it should be a 17059210 for an L-82 4spd. Anyone know what that carb is off of? Thanks for any help ya'll can give.
17059205 1979 350 chevy truck,non A/C,AT can not find a 462824 head i bet that number is 462624
 
B

bmotojoe

Guest
This information was taken directly from the dealership parts department 1953-1982 Corvette parts and illustration catalog dated December 1983.
Carburetor Group Number is typical: 3.725
Part Numbers:
Y W/SP H/PER M.T. #17059211
Y W/SP H/PER A.T. (EXC. A.C.) #17059210
Head Group Number is typical: 0.269
Part Number:
Y (350) W/SP. H/PER. 464045 Same part number was used from 1971 through 1979
Both part numbers given for heads, 462624 and 462824 do not appear to be Corvette part numbers.
Carburetor number given 17059205 does not appear to be a Corvette part number. Also please note above correct carburetor part number for 1979 L-82 with manual transmission.
Sorry cant help with what model of car the heads came from.
Brian
 

C3 4ME

Well-known member
Joined
Apr 29, 2006
Messages
72
Location
Mechanicsville, VA
Corvette
1979 Black L-82 4 speed
Thanks guys, I may pull a valve cover again today for a closer look to see if it is a 624, not 824. I know I have the original engine as verified by the stamp on the front of the block, so I'm thinking the heads are also correct, and I just misread it. Interesting to know about the carb though.
 
B

bmotojoe

Guest
There is a service note attached to part #464045 1971-1979 Y (350) W/SP. H/PER. The service note #5 explains that the entire lower edge of the head is scalloped around cylinder head bolts.
This may help identifying the head. I believe what they mean by scalloped is that there was extra machine work done to the head around the head bolt areas. This should help determine if in fact you have L-82 heads on your original block.
Brian
 
Joined
Jan 1, 2002
Messages
7,246
Location
Washington, Michigan
Corvette
'67 Marina Blue Convertible
There is a service note attached to part #464045 1971-1979 Y (350) W/SP. H/PER. The service note #5 explains that the entire lower edge of the head is scalloped around cylinder head bolts.
This may help identifying the head. I believe what they mean by scalloped is that there was extra machine work done to the head around the head bolt areas. This should help determine if in fact you have L-82 heads on your original block.
Brian

You're referencing PART numbers (which don't appear on the heads); the correct CASTING number for all '78-'82 Corvette 350 heads is 462624. The PART number 464045 listed in the P&A is a "functional replacement" for Service of '71-'79 Corvette 350's, but it wasn't used in production. The "scalloped" note refers to the cast shape along the lower outboard edge of the "lightweight" castings (which were prone to cracking).

:beer
 

C3 4ME

Well-known member
Joined
Apr 29, 2006
Messages
72
Location
Mechanicsville, VA
Corvette
1979 Black L-82 4 speed
Ok, I double checked and it looks like under closer inspection that it is a 624, not 824. Also I went further and checked out the trim tag and it shows E15, which should be May 15 build date, correct? Also anyone know anything about the guide plates on the pushrods?
 
Joined
Apr 29, 2001
Messages
2,141
Location
Rio Rancho, NM
Corvette
1981 HD Suspension; ZN1 Option
...The "scalloped" note refers to the cast shape along the lower outboard edge of the "lightweight" castings (which were prone to cracking).

:beer

Tel me about it! What a PITA was to find usable heads for my engine. One local engine builder had a set of 1980 624 heads which he claimed were not cracked, and he wanted $1,000 dollars for them. :W :crazy :mad

GerryLP:cool
 
Joined
Jan 1, 2002
Messages
7,246
Location
Washington, Michigan
Corvette
'67 Marina Blue Convertible
Ok, I double checked and it looks like under closer inspection that it is a 624, not 824. Also I went further and checked out the trim tag and it shows E15, which should be May 15 build date, correct? Also anyone know anything about the guide plates on the pushrods?

An E15 body build date code on a '79 is December 15th, '78.

:beer
 

C3 4ME

Well-known member
Joined
Apr 29, 2006
Messages
72
Location
Mechanicsville, VA
Corvette
1979 Black L-82 4 speed
Thanks, John. Looks like my car has a birthday coming up soon. I knew is seemed strange since my car's serial # is in the 15000's of a 53000 car run, so I knew it had to be in the earlier part of the model run.
 

blacksharkL82

Well-known member
Joined
Apr 24, 2003
Messages
66
Location
spring hill fl
Corvette
1992 RED coupe
I took my valve cover off for restoration today and found casting # 462824, where for my 79 L-82 my research shows it should be a 462624. Anyone know what a 462824 is from? Also L-82's didn't have pushrod guideplates did they? Mine does but I know the engine has been rebuilt by the previous owner. Also the carb # is 17059205, where it should be a 17059210 for an L-82 4spd. Anyone know what that carb is off of? Thanks for any help ya'll can give.

Yes, on the guide plates for a 79 L82. The manual states so and mine has them. This motor never had the valve covers off, till I bought it and the guide plates were there and still are.
 

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