My son bougth a rebuilt 396 that has been stored for 10-15 years.
Block casting number: 3916323, 060 bore
Heads: 3964291 108cc?
Cam: Comp Cam 11-430-8 (10) Grid number 280HR
Pistons: TRW L-2287
Rods: Manley 14060

It seems that it has prox 11,88 comp ratio but the cam specs says it for 9,5:1 ratio.

The engine has not been started.

What do you guys think?

Chevy BB is all new to us..

Thanks!