Need help identifying Chevy Big Block


New Member
Oct 16, 2018
1976 Chevy Camaro
Hey all, just started restoring a 1976 Chevy Camaro. Previous owner thought it had the 350, but that's definitely not the case. Casting numbers indicate a 396/402, suffix says this was in a Chevy truck, but the oil pan isn't longer like it was in a truck, and then there's the Corvette logo on the valve cover. This thing has been heavily modified (car was being used for drag racing) and I'm wondering what I might be dealing with? Any information would be great.

Casting number is 3969854.
Number opposite the casting number on the rear of the engine is GM 7
Number on the side of the block looks like A 12 70
Number on the front of the engine, underneath the alternator is T0610TBG
Number on the front side of the valve is hard to tell. Maybe 8488? 3488?

Pictures are attached. Thanks for any information you may have!


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