ls1_driver43

I just got done rebuilding my transmissions and putting it in. The car runs fine and it shifts through all the gears fine. When ever I floor it, mainly in first, after it reaches 6k rpm the shifter starts to shake really bad. This seems to happen when the wheels lose some traction(I dont know if thats related). I recently changed the transmission mount and switched the position of the driveshaft. Neither really helped. What could be wrong with it??

therealcreeper

iTrader: (37)

Mine does the same thing. Do you have a short stick? Is it a poly trans mount? Between those two things I don't think mine is ever going to stop so I just live with it

ls1_driver43

Ya, its the hurst shifter and I switched to the Energy Suspension mount today with no luck. The old mount looked fine though and it shook with the old one too.

ls1_driver43

Does anyone else's car do this?

ls1_driver43

Anybody

Empatho

iTrader: (16)

Mine does the same thing but only sometimes, It will be fine for a few minutes but then it comes back. I replaced the transmission mount with another factory one and I still have the same problem.

ls1_driver43

Aree you talking just a little shaking or a lot? When it gets to about 4k the shifter seems like it wants to rattle off and is very loud shaking. My friends GT doesn't do this at all. So im guessing this is normal though and not worry about it?

slow ride 02

I dont think its normal. I have had a M6 for ten years now. Not one has it ever done that!

ls1_driver43

do you have any idea what it could be

FBGSU02

iTrader: (6)

Maybe check balance of drive shaft, bad U-joint???

SSellers

Do you guys have to do a pinion angle check and setup with these cars for your driveline? I'm coming from leaf spring cars....

Engine speed related, forward of tranny.
Highway speed related, behind tranny.

roninsonic

iTrader: (3)

something is either out of balance or out of alignment. Most common culprit would be driveshaft.