Car Shudders - LS1TECH

Log In 

LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

Car Shudders

Thread Tools Search this Thread
Old 03-03-2009, 09:04 PM   #1
Teching In
Join Date: Feb 2009
Posts: 12
Default Car Shudders

Recently installed the Billet Aluminum dog-bone and Ployurethane Bushings from 3800 Performance and have noticed the car sudders now when it downshifts from 2nd to 1st gear when coming to a stop and does it with and without applying the brakes . I expected to feel more vibration from the ployurethane bushings but didn't expect to feel the car shudder. Has anyone else experienced this phenomena with this mod, and any ideas what could cause this?
dbrink77 is offline   Reply With Quote
Old 03-03-2009, 09:21 PM   #2
iTrader: ( 3 )
tonskiguy's Avatar
Join Date: Jul 2007
Location: Greenville, WI
Posts: 231

Not sure if it's the same, but I noticed a shudder when I put the poly mount in my 06 Impala. I think it's being noticed when the DOD is transitioning between 4 cyl and 8 cyl. If I put the trans in D instead of OD, the DOD is canceled out and I don't feel the shudder.
2006 Imp SS all stock
1996 Z28 modded
tonskiguy is offline   Reply With Quote
Old 03-03-2009, 10:48 PM   #3
TECH Addict
iTrader: ( 3 )
BuffaloSS's Avatar
Join Date: May 2006
Location: Buffalo, NY
Posts: 2,421

Yes, it is completely normal. It is the engine/trans shifting due to the lessening speed, and the vibration is transferred throughout the chassis. Mine was horrible from 25mph down to 10mph or so. It didn't help that the cold weather last winter made the ZZP Poly mount as hard as a rock. I passed the Poly mount over to someone down south and went back to the OEM mount twisted 90*. I did, however, buy a spare OEM mount in which I'll install the MSP bushing in the warmer weather. The cold really made the stiffer mount unbearable.
RIP BuffaloSS
2006 Impala SS - PARTS FOR SALE!!!!
BuffaloSS is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


All times are GMT -5. The time now is 07:15 PM.