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What to do? Tranny Sounds bad (help)

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Old 04-13-2005, 01:13 AM
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Car: 85 Suburban
Engine: 350
Transmission: TH400
What to do? Tranny Sounds bad (help)

Ok After getting my replacement fenders i went for a nice sunday drive all was good until I decided to Gun it after this red light after that when i let off the throttle the tranny sounds rough, loud, grinding, yet driveable the tranny did not make any bad sounds when i have the throttle on, after another red light i drove regualar and nocited in first gear the tranny didnt make those noises but in 2nd and third it did I just had this tranny rebuilt <2000miles ago by a local shop reccomened to me by my friend. Its a TH350 with B&M Shift kit and 2500 B&M STALL converter im running 4:11's In the back

Any help?

if this tranny is totally screwed i was thinking about swapping to a 5 or 6 speed... Any info on Cost for that?

Thanks anyone

EDIT: Id Take a 4 speed too

Last edited by Slag02; 04-13-2005 at 01:46 AM.
Old 04-13-2005, 02:23 PM
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excuse me if i'm wrong but dont 2nd and 3rd use an additional band then does 1st gear. Maybe something happened to the servo or the band itself.
Old 04-14-2005, 09:20 PM
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Ok today I was going to drive it around the block so i put it in reverse to back out and a loud clanking noise sounded like the drive shaft is just clanking around then the start of a higher piched whine or something so i just shut off the car and got out
Old 04-17-2005, 10:38 PM
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Nobody?
Old 04-17-2005, 11:43 PM
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It's not the flex plate, is it?
Old 04-18-2005, 12:44 AM
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not sure how can i tell
Old 04-18-2005, 06:57 AM
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Car: 89 Firebird
Engine: 406 CI
Transmission: Pete K 700R4
Axle/Gears: 3:55
Support the car safely on jackstands. Take off the plastic inspection cover that alows accestt to the torque converter bolts. Make sure all 2 bolts are in place. Then have a hook at the flexplate. Make sure the bolts that hold it to the crank are in place. If all is good, look close to see if flexplate is cracked. If still good then start the car and stay well off to the side of the spinning flexplate and watch it and see if it wobbles alot and bangs around. If you rev the motor, stay well off to the side in case it breaks. They break violently once the crack. Safety first.
Old 04-18-2005, 08:42 AM
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Re: What to do? Tranny Sounds bad (help)

Originally posted by Slag02
I just had this tranny rebuilt <2000miles ago by a local shop reccomened to me by my friend
What kind of warranty came with the transmission rebuild? I wouldn't touch a thing until finding out if they'll cover it.

-b
Old 04-18-2005, 01:16 PM
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it was a 6mo/ 6000mil war. but that was like 2 years ago

but still driven under 2000 miles
Old 04-26-2005, 09:41 PM
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bump
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