[FFR428]

J305, Sounds like the snout might have been machined or it is not the original crank. If you see a pronounced parting line running down the crank it is cast NOT forged. This is from the mold the crank was cast from. There shoud be some sort of numbers or markings on some of the counterweights. Also the C6AE-C rods are listed as 68-70 390 410 428 rods as well as for 66-70 330HD 361 and 391. G.