Quote Originally Posted by radamx
OK what I did was to have the crank offset ground to a small block chevy rod size. 2.100 which took my 401 stroke from 3.68 to 3.825.
then I bought 6 inch chevy rods and custom pistons.
I 1/2 filled the block with block filler and bored it .085 over to 4.250 bore
this gives me 434 cid .
I have heard of useing a 400 piston but I just went with a custom piston to get what I wanted.
you could also grind the crank to 2.00 small journal for more stroke.
I am sure there are 50 different ways to do this .I was just shareing mine
Good luck.