stroking a 383

crank machine work aint worth it when you can buy a new stroker cast crank or a 440 steel crank. 400/451 is based on a 383 crank going to a 440.
You use stroker 383 pistons that are shorter to accept the longer throw of the 440 crank and rods
Mopar 383 Pistons Chrysler Plymouth Dodge 383 Pistons