Violent shaking at higher speeds during acceleration - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

lift4dapump · 12-10-2019, 12:39 PM

I have searched almost every thread, and nothing I've tried has fixed the problem.

2010 SS 63k miles, full bolt on w/ aggressive cam, rims are stock. Stock tire sizes.

New front tires, balanced twice jic, new motor mounts and trans mount.

Problem started a week or 2 after new tire installation. Then put in the new mounts and then rebalanced new tires.

Any help would be appreciated.

fz4k98 · 12-10-2019, 12:43 PM

Where is it shaking, steering wheel, shifter, seat? Depending on where it is most noticed can help isolate the issue

pnwdan · 12-10-2019, 12:50 PM

Tires can be bad and still balance out. Switch the tires front to rear and see if it changes the vibration.

Sent from my SM-N960U using Tapatalk

Greenhornet2 · 12-10-2019, 01:11 PM

driveshaft center bearing?

mikeman · 12-10-2019, 01:25 PM

Didn't Spec have a similar problem like this? I think it was his LCA bushings.

Spec · 12-10-2019, 01:27 PM

Quote:

Originally Posted by mikeman

Didn't Spec have a similar problem like this? I think it was his LCA bushings.

Right... easy method to figuring out whether this is your issue is to lift the car and get it off the wheels/tires, then shake the tire to see what's loose. If nothing is loose, it could indeed be your tires and/or wheels.

gtstorey · 12-10-2019, 02:15 PM

Check out https://www.camaro5.com/forums/showthread.php?t=563522

It was still miss balanced tires after multiple balancing's. I would get all 4 wheels off the ground, spin the back under power. If there isn't any vibration, put the front wheels on the back and repeat.

Greenhornet2 · 12-10-2019, 02:57 PM

If the vibration changes when you apply throttle and accel and when there is no load I do not believe it is tires or wheels. that it something more likely in the driveline, trans, driveshaft, diff, axles.

gtstorey · 12-10-2019, 03:02 PM

Quote:

Originally Posted by Greenhornet2

If the vibration changes when you apply throttle and accel and when there is no load I do not believe it is tires or wheels. that it something more likely in the driveline, trans, driveshaft, diff, axles.

I agree to a large extent, but when this happens about the time that new tires are installed, I would start with them.

lift4dapump · 12-10-2019, 03:34 PM

Quote:

Originally Posted by fz4k98

Where is it shaking, steering wheel, shifter, seat? Depending on where it is most noticed can help isolate the issue

Shaking all over. Rear view mirror, seats, and steering wheel

Rock-It Man · 12-10-2019, 03:42 PM

Tire unbalance is not dependent on acceleration. It is worst in the range of 55-75 mph, when the resonant frequency of the wheel-spring system is achieved, whether you are accelerating or coasting.

Since you had the motor and transmission mounts changed, that is the obvious first place to look. Could be loose fasteners due to poor installation (insufficient torque, reusing fasteners that were supposed to be replaced, or forgetting thread locking).

Sxren_Camaro'13 · 12-10-2019, 03:43 PM

Quote:

Originally Posted by lift4dapump

Shaking all over. Rear view mirror, seats, and steering wheel

Spec with the zl1 right had this in a similar thread.. right? spec..

Blownfogger540 · 12-10-2019, 03:45 PM

what brand of tires

gtstorey · 12-10-2019, 03:48 PM

Quote:

Originally Posted by Rock-It Man

Tire unbalance is not dependent on acceleration. It is worst in the range of 55-75 mph, when the resonant frequency of the wheel-spring system is achieved, whether you are accelerating or coasting.

Since you had the motor and transmission mounts changed, that is the obvious first place to look. Could be loose fasteners due to poor installation (insufficient torque, reusing fasteners that were supposed to be replaced, or forgetting thread locking).

I've seen the vibration from miss balanced tires change based on acceleration and deceleration, although this has been in very wore out vehicles, with very tired suspension (and everything else).

I read the original post as the mounts were changed after the problem started. If that's not the case, start there.

12-10-2019, 12:39 PM	#1
lift4dapump Drives: 2010 Camaro SS Join Date: Sep 2019 Location: Houston Tx Posts: 8	Violent shaking at higher speeds during acceleration I have searched almost every thread, and nothing I've tried has fixed the problem. 2010 SS 63k miles, full bolt on w/ aggressive cam, rims are stock. Stock tire sizes. New front tires, balanced twice jic, new motor mounts and trans mount. Problem started a week or 2 after new tire installation. Then put in the new mounts and then rebalanced new tires. Any help would be appreciated.

12-10-2019, 12:50 PM	#3
pnwdan Drives: 2014 2SS/RS Join Date: Jan 2018 Location: Washington Posts: 848	Tires can be bad and still balance out. Switch the tires front to rear and see if it changes the vibration. Sent from my SM-N960U using Tapatalk __________________ 2014 2SS/RS LS3/M6

12-10-2019, 01:11 PM	#4
Greenhornet2 Drives: 2011 Camaro 2SS LS3 Whipple Join Date: May 2019 Location: Connecticut Posts: 1,925	driveshaft center bearing? __________________ Whipple 2.9 CAI ID1050x injectors ZL1 Pump JRE FPCM JMS Voltage booster JRE Rough Idle blower cam BTR .660 springs CHE trunnion kit 1 7/8 Speed Engineering Borla Atak JRE scoop 1.5" lowering springs BMR trailing arms and toe links Cradle inserts 704WHP 603WTQ 93 octane

12-10-2019, 02:57 PM	#8
Greenhornet2 Drives: 2011 Camaro 2SS LS3 Whipple Join Date: May 2019 Location: Connecticut Posts: 1,925	If the vibration changes when you apply throttle and accel and when there is no load I do not believe it is tires or wheels. that it something more likely in the driveline, trans, driveshaft, diff, axles. __________________ Whipple 2.9 CAI ID1050x injectors ZL1 Pump JRE FPCM JMS Voltage booster JRE Rough Idle blower cam BTR .660 springs CHE trunnion kit 1 7/8 Speed Engineering Borla Atak JRE scoop 1.5" lowering springs BMR trailing arms and toe links Cradle inserts 704WHP 603WTQ 93 octane

12-10-2019, 12:43 PM	#2
fz4k98 Drives: 2013 1ss Join Date: Jul 2012 Location: WI. Posts: 520	Where is it shaking, steering wheel, shifter, seat? Depending on where it is most noticed can help isolate the issue

12-10-2019, 01:25 PM	#5
mikeman Banned Drives: 2015 Camaro Join Date: Aug 2018 Location: My Garage Posts: 1,125	Didn't Spec have a similar problem like this? I think it was his LCA bushings.

12-10-2019, 02:15 PM	#7
gtstorey Drives: 2010 Camaro SS2,L99, LSA SC Join Date: Aug 2017 Location: Huntsville, AL Posts: 2,155	Check out https://www.camaro5.com/forums/showthread.php?t=563522 It was still miss balanced tires after multiple balancing's. I would get all 4 wheels off the ground, spin the back under power. If there isn't any vibration, put the front wheels on the back and repeat.

12-10-2019, 03:42 PM	#11
Rock-It Man 376 cubic inches of fun Drives: 2023 Camaro ZL1 A10 Join Date: Jul 2010 Location: MA Posts: 4,033 View My Garage	Tire unbalance is not dependent on acceleration. It is worst in the range of 55-75 mph, when the resonant frequency of the wheel-spring system is achieved, whether you are accelerating or coasting. Since you had the motor and transmission mounts changed, that is the obvious first place to look. Could be loose fasteners due to poor installation (insufficient torque, reusing fasteners that were supposed to be replaced, or forgetting thread locking).

12-10-2019, 03:45 PM	#13
Blownfogger540 Drives: 2013 ZL1 416 Join Date: Feb 2013 Location: Langley B.C Posts: 2,619	what brand of tires