Right! Another way to get there (390 cubes) is the 4.00 arm in a bored out 318. Add a good head and a cam!
Hummmm, a 360 crank @ 3.58 into a 340 block bored to 4.100 for a 378.12 or a 6.2. Add a good head & cam!
Right! 3.58 (360 crank) into a bored out 318. Might as well go .030 over.
Whoaaaa! Careful now!
You’re out of the scope of the 400 +/~3 inch idea.
LMAO
Say… you have a 3.75 in a 383 block correct?
Is the bore size still stock?
IIRC, that’s what you have. I think it’s a rockin combo myself.