Cause of this?

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May 31, 2007 | 02:15 PM

5 LS1 7

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Cause of this?

this only happens in 1st gear and started happenng the day in had my LT's and ORY installed..

Going into 1st gear under medium throttle i feel/hear a tapping noise from underneath the car. Now, I know the biggest prob with LT/ORY installs are Y pipe clearance, but i checked and i have over an inch of clearance from the floorboard.

Some have suggested worn tranny mounts...

any ideas?

May 31, 2007 | 02:45 PM

LS69TA

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From: Texarkana, Tx

Worn engine mounts letting the engine torque over too far?

May 31, 2007 | 03:03 PM

headed-ws6

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From: DFW

could possibly be an exhaust leak from the header?

May 31, 2007 | 03:04 PM

hazard2k

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From: Rochester, NY

common problem with headers and y-pipe set-ups. The engine torques and twists, causing the driver side pipe to hit the floor board. There is a clamp that helps this.

http://thunderracing.com/catalog/?ac...&vid=3&pcid=54 look around 3/4 of thw way down. It is made by mufflex.

May 31, 2007 | 03:11 PM

Torque_Wrench

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you don't hear it any other time than that?

May 31, 2007 | 03:17 PM

LSXNV

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From: Bettendorf Iowa

i don't know about other systems, but my Loud Mouths muffler sits awfully close to the rear u-joint. any tweaks to the exhaust and the two interfere.

May 31, 2007 | 03:52 PM

5 LS1 7

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Quote:

Originally Posted by Torque_Wrench

you don't hear it any other time than that?

If its occuring anywhere else in the powerband i either cant feel it or hear it cause the exhaust is so loud. But it's very evident during a medium throttle into 1st..