Transmissions and Drivetrain Need help with your trans? Problems with your axle?

th350 problems?

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Old 07-08-2011, 11:49 AM
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Car: 84 Trans Am
Engine: 383 Stroker
Transmission: Th350
th350 problems?

So i've noticed this since day one of new trans and engine. when car would shift from 1st to 2nd it would make a clunk noise. but when on it hard it wouldnt make a noise. also down shifting would realy make a loud clunk. passed it off as being the rear. well now that my motor is out i thought i would check it out.

when underneath the car tran drive shaft and rear are there just motor is out. with trans in park and when moving drive shaft there is a clunky/crunching noise coming from trans. this trans was just rebuilt for the 383 motor. is this noise normal or what could it be. I have another month before warrenty is up. I'm tring to wait to get the new motor in then take the whole car to the trans shop.
Old 07-15-2011, 01:25 PM
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Car: 74 z28, 89 IROC, 98 Z28, 91Z Vert
Engine: 383, 350, 347, 305
Transmission: th400, 700R, T-56, 700R
Axle/Gears: 3.42, 3.45, 4.10, 3.08
Re: th350 problems?

I broke alot of brand new built th350 on the street. I have one that made a noise so wierd that everyone and their mom swore it was a wrist pin in the motor. Rebuilt the motor to find it was the trans. I know that they are known for breaking the cases inside where the one of the drums locks in. I would def get it checked if you think its coming from there. Good luck
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