Thread: engine/trans shake when burning out

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Seems to me that if you have no vibration at any rpm/speed with moderate throttle you've ruled out component balance from the list - it would be shaking somewhere in the rpm/speed range if it were a balance problem. What are your rear tires? Are you trying to crank some massive pro-stock meats? I like Hoss's idea about a wet burnout - what does it do on wet pavement? How stout is your driveshaft? Did you have it built for the HP & torque, or are you using an OEM or cut down OEM? I'm leaning towards a clutch/pressure plate/flywheel problem, or maybe the driveshaft wrapping up and going harmonic under maximum torque. Personally I don't like needle bearing pilots, but that's just me. Bronze provides known support, is rugged enough to withstand stabbing the tranny with minor mis-alignment of the clutch disc, and will wear before the input shaft regardless.