Camaro_freak

iTrader: (1)

The other night when I hit the gas hard and the tranny downshifted to 2nd, I heard a loud "bang" sound twice, accompanied by a jolt that felt like it came from the back of the car. Now, every time it shifts from 1st to 2nd with moderate acceleration, I get the same noise and jolt. The 1-2 shift is very firm because I put in a shift kit a few months ago. I suspect the spider gears got damaged, but am not sure since I haven't had a chance to look at it yet.

I'm thinking about upgrading gears while I've got it apart. Right now I have the stock 2.73's. What gear would be good for my application? I've seen some people with LS1's say you shouldn't run high gears with a turbo. I was thinking 3.42's originally, but now I'm wondering if 3.23's would be better. Any thoughts?

daniel6718

iTrader: (36)

3.42....its a good gear...with a4 and boost.....
but it sounds to me more like the tranny is the culprite...the rear should do it during all shifts/speeds

buttermantoast

I had the same problem it was my tranny mount when i shifted from 1st to 2nd it was a lound clunk and kinda shook the car was a broken tranny mount a 20 dollar fix!!!

Blk97WS6

iTrader: (19)

^^^sounds like a trans mount, same thing happened in my A4 LT1

Camaro_freak

iTrader: (1)

Oh, man, I never even thought of the tranny mount. That would be sweet if that's all it is! I'll take a look at it tonight and post what I find.

dhdenney

iTrader: (53)

I just read a couple posts the other day where people broke their tranny mounts, lol. Must be contagious.

Fire67

iTrader: (3)

Its real common on these LT1 cars... You need a jack to check it, just looking at it wont tell you ****. Get the car on stands, place the jack under the trans and jack up just slightly, if the mounts broken you'll see a split in the rubber open up as you jack.

Get a poly mount this time and forget about it, it wont break again.

Kanes2413

iTrader: (9)

could the u joints its happend to me a few times and it has similar symptoms as mine

slowmofo

iTrader: (6)

Thats what it sounds like to me also.....

Hambone 7

I agree, thats your problem

Camaro_freak

iTrader: (1)

I just removed the mount this evening, and sure enough, it's split right in half. Thanks for the help and saving me some time in finding the problem!

Ls1Bait

Nice and easy