Eat your metal shavings out, Chevy boys. Fitting a 4.300-inch crank in a big-block Ford requires no grinding whatsoever. Even 4.500-inch cranks only require slight notching of the block. According to Kaase, earlier blocks from the '70s had slightly wider crankcases than later blocks from the '80s and '90s, like the D9TE casting used in our build. Fortunately, the counterweights of most aftermarket cranks are compatible with either block.