Hi I am new to the Big Block world so looking for a little bit of help I picked up a complete 455 last night and wondering if any one can help decifer the numbers on it. Or what it came out of. It has a Edelbrock Torker intake and the heads look like they have been ported. I have not had a chance to go through it.

top front of block 396021Fa
It has E heads are these good?
301 CFD on the back top of the block.

Thank you for your help in advance.

 

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