if there we no spun bearings in the engine, then have the crank`s clearences checked at a machine shop and they`ll tell you if it needs turned or not. a RV cam will make a 454 a real stump puller and is pretty much ideal for the street or pulling a heavy load. as for a RV crank, there is no such thing. there`s a Forged steel crank, and a cast iron crank, the forged has a large parting line, the cast will have a thin parting line. either will work fine on the street, although a forged crank is stronger and can take more high RPM abuse than a cast crank. If there`s nothing wrong with your crank there`s no need to replace it, just have the clearences checked at a machine shop.
[ December 14, 2002: Message edited by: DoubleVision ]</p>