Is it possible to put a 74 302 crank into an 88 block? I know if it worked it would be 28oz balance and thats great. Also, what do you think about .40 over on a 74 block? Too much? Thanks for the info.
Physically the 74 crank will fit and will work in the roller block as long as you use the 28 oz balance damper and flywheel. The only snag I see is the rear main seal, 1 pc. on the 88 block and 2 pc. on the 74 crank. I think you can machine off the lip on the 74 crank to accept the 1 pc. seal, not totally sure on that one.
.040 is pushing it on a 302 but possible with a sonic check.