340 Engine Shake

Phreakish said

I'd be tempted to pull the belts for a bit to rule out those accessories.

To echo what others have brought up, what are you using for a flywheel? I had been running a '360 balance' flywheel that turned out not to be, and same with my damper - the shake was unbearable though, and got worse as the speed increased. I did not see a shake that came and went, for what that's worth.

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It's a RAM clutch and steel flywheel. They were ordered as neutral balance. I didn't notice any weights on them.

I understand the balance concerns, but lots of folks put 4 spds in after the fact and don't rebalance their cranks or am I missing something?

I'll add removing the belts to my list. I found a guy in town who is a mopar guy and has his own shop. I am going to trailer it down there he can go through all things at once. I will keep everybody updated

I appreciate everyone taking the time to chime in here. It definitely gives me a place to start.