I just finished installing my rebuilt trans. I also installed a poly torque arm mount and B&M shifter. After installing it I noticed a vibration at speeds over 75mph. The vibration varies with throttle position. Could it be the driveshaft? Pilot bearing? The trans itself? Please help. Thanks.

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1986 CAMARO Z28 ->
151,000 original miles, 43,000 on 89' vette 350 block, Holley 650 DP, Weiand intake, 1.6 rockers, 1 5/8" headers, no cat, 2 1/2" Flowmaster catback, Mallory coil, March pulleys, B&M Ripper shifter, T5 with 3.35 1st gear and 0 miles, 90% Centerforce clutch, 3.73 posi, Eibach 1" drop springs, Spohn LCA's, Spohn adjustable panhard rod, Subframe connectors, all bushings are urethane, 2 12" Sound Streams, 2 Infinity 6X9's, 2 Pioneer 6X9's, 800 watt Lanzar Vibe amp. ET 13.22@ 106.4MPH 3300lbs less driver and speakers Next mods-> Extreme Energy 268 cam, Holley street dom intake.

1987 TRANS AM ->
73,000 miles, 305TPI, auto, gutted air box.

 

could be about anything. first thing i'd do is look for missing, or loose bolts in everything you had apart.

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ICON Motorsports

1st & 3rd

 

Problem fixed. It was the drive shaft. I forgot to put in the clips for the rear u-joint, not a good thing.

One question though. How much gear fluid is suppose to go in a T5? I put in 2 1/2-3 quarts of mobil 1 synthetic gear oil.