yea stock bore is 4.25, crank is 4.00, 4.310 bore w/stock 4.00 crank
is 468, change the stroke on crank to 4.25 w/4.310 bore u got
a 496 stomper, for a factory block that is the best and biggest
bore you want to go with unless you get a merlin, and then
your car will go....whaaaaaaaaaaa whaaaaaaaaaaaa :wink: