318 stroker builds

It's basically the same as any 4" small block. Same crank as the 340 block version, same rods. Only difference is the pistons ('cause of the bore size). If this is to be a street car predominantly, I'd suggest forged pistons, the scat cast crank, Eagle SIR rods, and to replace the heads with any run-of-the-mill 340/360 heads that have been treated to a modern performance valve job and setup, and run a cam in the 240° @ .050 range. With a dished piston the compression will be around 9.5:1 and run on anything you put in the tank and pull like a freight train from idle to 5500 or so.