Heavy High Speed Vibration after new Springs, Shocks, Bushings
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Joined: Mar 2009
Posts: 100
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From: Woolwich NJ
Car: '89 L98 G92 Iroc /'11 GS Vett
Engine: L98/LS3
Transmission: 700R4/M6
Axle/Gears: 3.27 B.W./3.42
Heavy High Speed Vibration after new Springs, Shocks, Bushings
I just replaced the Springs (stock), Shocks (kyb), and Bushings (poly) on my 1989 L98 Iroc. Car rides amazing until i hit 70-80 MPH then it vibtrates very bad. It does it in N or D so its not just RPM dependant. I assume its the tires needing a balance or possibly the Trans mount now being Poly but it was not happening before this work was done.
Thoughts?????????????????????
Thoughts?????????????????????
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Joined: Dec 2009
Posts: 627
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From: Waxahachie Texas
Car: 88 IROC Z/28-under re-construction
Engine: 5.7 Tuned Port
Transmission: It's in there....
Axle/Gears: 9 bolt Borg-Warner
Re: Heavy High Speed Vibration after new Springs, Shocks, Bushings
with all the new parts im sure the suspension and alignment are out now that the car has a new geometry now.
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: Heavy High Speed Vibration after new Springs, Shocks, Bushings
https://www.thirdgen.org/forums/tran...ison-pics.html
JamesC
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