Quote Originally Posted by 1JohnnyO
Well, the block casting numbers say 1969 396, 2 or 4 bolt. Im really only familiar with the 454 blocks, but Im sure others here will help you out. The heads are oval port, semi-open chambers, should be about 113cc. They are not a popular GM head for sure, but I dont see where they wouldnt be a good head to use with a little work. The listing I have doesnt show the valve size, but I'll bet it's 2.06 intake and 1.72 exhaust. You can have larger valves installed, maybe a little port work, short side radius and bowl blending. That should do it. I dont know about stroking a 402...in my opinion, you would be better off starting with a larger block, maybe 454...but if you want to use what you just bought, Im sure it could be done, but I dont know if you would get the performance out of it, based on how much you would have to put into it...starting bigger would be much cheaper in the long run. Lets see what others have to say. And welcome!! John
I.M.O.,start with a 454 block and use a 4.25 crank.
You have 100 more cubes and it will fit any place the 396/402 will.