shakes, rattles but rolls

[BAucoin]

72 scamp 318, 904 trans, pretty much stock with exception of 4 barrel, duel exhaust. starts fine, give it a little gas (any gear) and she sounds/moves good. Rev the engine or move it quick and you get a major vibration/rattle. I've checked the engine mounts (foot on brake and select drive and reverse) and they appear to be good. Transmission shifts through the gears pretty quick. Any thoughts? I'm thinking the trans; but, I don't know.

Bob

 

[briankaplan]

How's the tranny mount? Could be flopping around there.

 

[BAucoin]

Didn't think about that until I hit post, I'll check it tomorrow and post the results. Thanks...

 

[BAucoin]

trans is sitting tight with no movement seen.

 

[70dart]

Are the flywheel bolts all tight?