Thumping under the floorboards?
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When I launch, or if I floor it and the trans. downshifts to first, I get a weird thumping noise from the floorboards. Is it time for a new trans. mount or what? Oh, and it didn't do that before I had longtubes.
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Could very well be the y pipe. I would take a look at your trans mount though. Mine was shot at 60k. Pretty much ripped in half and barely hanging together. I got a energy suspension poly mount from autozone cause they had it on the shelf.
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You can generally see if the mount is broke or not, you will see rips and cracks in the rubber. 9 times out of 10 floor board thumping is caused by the mount. Let us know if it fixes it.
Kyle
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Trans Mount... Y-pipe would be one Thump at hard launch...
Tq Arm is kitting the Floor Pan I bet...
Trans Mount is none existant anymore...
You need to fix this ASAP...
Change in launch Angles can/will damage drive line and rear end.. also undo wear...
had this issue with my 89 ROC...
Tq Arm is kitting the Floor Pan I bet...
Trans Mount is none existant anymore...
You need to fix this ASAP...
Change in launch Angles can/will damage drive line and rear end.. also undo wear...
had this issue with my 89 ROC...