That crank is a drop in 318 mains stroker candidate with stock 318 pistons and rods. It should have 318 mains as that is what the 340 had and that is what the sub 366 cid NASCAR motor was based on with the bigger 4.04 bore than the 360 but without the >366 CID stroke combination. That crank on a .080 in the hole 318 will get your piston up +.072 to get you close to zero deck (~.008) clearance. Sell it to a 318 builder if your not going to use it with the special 355 pistons or special rods, etc.
