Vibration - Team Camaro Tech
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post #1 of 3 (permalink) Old Mar 16th, 03, 05:45 AM Thread Starter
Join Date: Jan 2003
Posts: 7

I have recently swapped from 327 to internally balanced 454. Ive developed a vibration @ 3000 to 3700 RPM. Bad, feel it in the seat and rear of car. Ive had the tires and drive shaft checked both were ok. Motor is an internally balanced 454, have a fluid dampner, changed from small block to solid big block motor mounts, and 4 speed w/center force clutch, fly wheel was not changed. I've swapped rear rims and tires, no change. I have the original 12 bolt, and did not have this vibration with the 327.
Any ideas how to track this down?
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post #2 of 3 (permalink) Old Mar 16th, 03, 11:34 AM
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Join Date: Dec 2000
Location: Kentwood, MI
Posts: 8,097

Could be clutch or pressure plate related.

Did you install a pilot bearing in your new 454's crank?

Does it do it in neutral?

What about with the clutch in?

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68 Camaro, E85 powered 427" small block. 9.96 @ 133 MPH, 1.319 sixty foot on motor. 5.92 eighth @ 116 with a 1.42 sixty breaking beams with back tire on the bottle
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post #3 of 3 (permalink) Old Mar 16th, 03, 12:26 PM
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Join Date: Oct 1998
Location: Tucson Arizona
Posts: 7,151

I posted on this very thing a few months ago. I found my problem..................a bent pully. Yes a bent pully. The one on the crank that attaches to the balancer. I removed belts and everything. I was so disgusted I removed everything from that did not need to be there and that was it!!!

Don't know if this is your problem, but mine felt like the car was going to fall apart. You could feel it in the seat, it made you think it was a drive shaft or trans problem.


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