Big Block ID Required

[rick]

I picked up a 454 core last weekend. The stamping on the front of the deck is "C71177703", the casting # at the rear of the block is "361959",and the head castings are "336781". What is this beast out of. The block and heads were cast in '77.

 

[MikeM79]

Rick,

The heads (336781) are from a 1974 454 engine, 110cc chamber volume, 2.06/1.72 valves.

Your engine casting number identifies it as a Mark IV 454.

Dunno about the other number. My book was not helpful.

 

[rick]

The heads have never been off of the engine and were cast in '77. (E 25 77) My brother had the same heads on a '78 pickup engine.I did some searching today and found out that this engine came out of a '77 Chevy 3/4T. Camper Special. It has an oil cooler adapter between the block and the oil filter.

 

[MadMike]

The other number is the "partial vin code", which is how you determine a "numbers matching" vehicle....
C is the assembly plant of the chassis (I'll bet C made trucks. C = Southgate)
7 = 1977 (as you found out)
1177703 was the VIN sequence # of the original recieving vehicle.

Regards,
MadMike