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06-10-2007, 07:08 PM #1
Thump in my auto trans when i hit the gas real hard! Why?
I just dropped an Ls6 (zo6) motor in My 99 SS that was an Ls1 and if i down shift at about 60 mph into 2nd gear to take off with my automatic it makes a thump under the car like an transmission mount is broken but it's not? why is this and what can i do about it? Thanks alot!!
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06-10-2007, 10:36 PM #2
I am no expert but sometimes even if a tranny mount looks ok and is not ripped it still can have small tears in it or just be weak from wear. If you take a pry bar and gently pry under the trans-if it moves its the mount.
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06-10-2007, 11:18 PM #3
- Join Date
- Dec 2006
- Location
- Pensacola
- Age
- 35
- Posts
- 1,561
Red- 2001 Camaro SS A4
tranny mount..trust me
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06-11-2007, 05:59 PM #4
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07-06-2007, 05:28 PM #5
Replace the stock tranny mount with a prothane poly unit, no more thump.
SteveC
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07-24-2007, 06:27 PM #6
- Join Date
- Jul 2007
- Location
- Baltimore MD.
- Age
- 56
- Posts
- 4
flat black- 1994 pontiac firebird
weld it
LOL yes had same problem we welded it to cross member,,but we are racing on round dirt track
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07-24-2007, 06:43 PM #7
+1 +1 +1
I JUST replaced mine about a week ago. I had the same exact problems you describe.
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07-24-2007, 06:44 PM #8
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