Bought a 1970's chevy 350. Has been rebuilt. Looks to be stock rods and crank. Has a fluiddamper on it. Flywheel was taken off and forgot which one went to this engine. He said I'm pretty sure its this one and handed me a flywheel that has no weights on it. He had another flywheel but it had a balancing weight on it(For a 383 rotating assembly he had sitting around). Will I be ok using the flywheel he gave me for this engine.

its 2 piece rear main. 4-bolt. Rebuilt by napa machine shop. pistons are .060 over trw flat tops. Ummmm Cant think of anything else that would affect balancing. If you need more info just ask. thanks

 

I know sbc's with 2-piece rear mains are internal.(except 400)

1-piece rear mains are internal on balancer, but needs a weight on flywheel.

Can some 2-piece main 350's still have a weight on flywheel???

 

No. On any 2 piece rear main seal 350 the flywheel will be neutral-balanced (no weight).