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Re: Pulsing vibration at around 55-65 mph
Quote:
Originally Posted by datguysaL
yes a simple 3inch drop can cause the vibration.
way to check it is with a angle gauge thingy.. i dunno the correct name to it. but its has a round gauge with a dial in it and 2 straightedges at 90degrees. you take it and hold it up to a flat spot under or above your tranny, preferable within 3 inches from the trans output shaft, then the same on the driveshaft, within 3 inches from the front ujoint, then the same on the rear. about 3inches before the rear ujoint on the shaft and about 3inches from the rear ujoint on the rearend. i think they should all be within 1 degree.
many drop kits are awready designed to change the pinion angle when installed. they also sell shims to correct it.
you said u swappd wheel with your buddy and the problem continued. so chances are your wheels are not the problem.
when exactly did this begin? after you did the drop? after the ujoints? after u got the wheels?
have u check your tranny to make sure its not loose, will the vibration stop if u let go of the gas pedal as soon as u do it or when it drops in speed?
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funny you mention that, when i let off the gas it seems to mellow out
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Greg 1974 GMC
1/2 Ton SWB Fleetside
L33 5.3/4l65e
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