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

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Old 11-07-2009, 04:22 PM   #1
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Join Date: Apr 2009
Location: Hermitage, Tennessee
Posts: 10
Car: 1986 Berlinetta
Engine: LG4 5.0 305 4bbl
Transmission: Automatic
Axle/Gears: 2.73

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thump noise
when I accelerate hard from a dead stop the front end of the car makes a loud thump noise then goes away after like a second
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Old 11-07-2009, 05:59 PM   #2
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Join Date: Feb 2007
Posts: 102
Car: 89 Trans Am
Engine: 5.0 TPI
Transmission: 700R4
Axle/Gears: 2.73 Posi

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Re: thump noise
Most likely the tranny mount
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Old 11-07-2009, 06:07 PM   #3
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Join Date: Aug 2006
Location: Central NJ
Posts: 6,050
Car: 86 Trans Am, 92 Firebird
Engine: 408 stroker, 3.1L of raw power
Transmission: Tremec TKO600, 700r4
Axle/Gears: Moser 9", 3:70 trutac, open 3:23

Classifieds Rating: (6)
Re: thump noise
i agree, the trans mount is most likely broken.
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Old 11-07-2009, 09:37 PM   #4
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Join Date: Apr 2009
Location: SE Houston
Posts: 130
Car: 1990 Camaro ZRS
Engine: 350 SBC
Transmission: 700R4
Axle/Gears: 3.42

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Re: thump noise
yup sure does sound like a tranny mount. i replaced mines with an energy suspension one. hasnt broke ever since. going on 2 yrs. lol
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Old 11-08-2009, 05:03 PM   #5
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Join Date: Apr 2009
Location: Hermitage, Tennessee
Posts: 10
Car: 1986 Berlinetta
Engine: LG4 5.0 305 4bbl
Transmission: Automatic
Axle/Gears: 2.73

Classifieds Rating: (0)
Re: thump noise
it was the trans mount, thank you
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Reload this Page thump noise
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