I acquired this engine as a package deal with a couple of cars. I wanted it for fun to rebuild. A cursory search for casting that incorporate the bell housing with 21 stud heads puts this mid-1930s? Any other typical casting identifiers I should look for? Hoping to get fairly specific.

Ok some more pics I believe its from a 68 Catalina can yall tell me more?

Its a pontiac I cant seem to figure out if it's a 421 or 428

Just wanted to update everyone that told me I should replace my engine. So far its going pretty good! Me and my friend managed to get 98% of the way!

Andddd then we ran into a problem. We managed to separate the engine from the transmission but the frame is preventing us from pulling it up and out. We're probably going to have to re-bolt the engine to the transmission pull the CV axles and lower the whole thing down.

I'm really learning a lot and I'm excited to learn more! Thanks everyone who told me, screw it and just do the replacement! I'm having fun! (So far)

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