Question:

Help decode classic Chevrolet 454 engine codes?

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Here is all the stamps on the engine.

Casting # 3963512

date code - H269

GM6

CONV1

Vin code - CF06_478 ( where the blank is they had stamped a 7 over it so I believe there full vin code is CF067478)

the cam is 060

Can you please help decode this info. My dad passed and he had this engine. I want to sell it, it is a professionally rebuilt short block.

These are the questions I want to know.

What year car was it in?

What kind of car was it in?

Is it a 2 bolt or 4 bolt?

Is it a LS5 or a LS6 engine?

How much is it worth?

Please tell me all the information that you can from this and please let me know if there is anything else I need to know about this engine to sell it.

I also have some 454 heads, Date - C 158, GM1, CFD, Pass, 14092360. But I believe these were made in the 80's or something. Should I sell the engine and heads together or seperate? and how much do you think they are both worth. Please state your source of info. Thank you very much for you help it is greatly appreciated

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  1. the block casting is for 1968 to 1971 427 or 454 1970/71 for 454. the rest of the codes are unfounded for a big block as the cf code is for sb 283 chk your codes closer

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