still getting vibration WTF - Lateral-g Forums

sweatnblood · #1 03-17-2011, 02:28 PM

Ok so does anybody know of a good susp. shop here in san diego...I have a 73 camaro running a lt/ 6speed...so far I have replaced the U-joints...balanced and rebalanced the wheels...checked the drive shaft...they were checking the angle of the tranz/ shaft/ rear...and beat on tunnel enough to get the so-called proper angle but I still have a feak'n vibration after 70+ it's not coming apart but the rearview is buzzing and I'm just wanting someone that can drive this thing and pin point...thanks for any help

uk68327 · #2 03-17-2011, 04:31 PM

Just a thought, but have you re-checked your wheel aligment?

**Sieg** · #3 03-17-2011, 05:10 PM

When did it start? What has changed?

Does it do the same thing in gears 4-5-6 at above 70?

Just trying to isolate chassis or drivetrain issue.

It's pretty much a crapshoot without knowing the history of your car.

Possibly a brake rotor?

Wheel bearing?

Axle?

CFster · #4 03-17-2011, 06:04 PM

You had the driveshaft balanced? Also, is the driveshaft diameter correct for it's length and material?

sweatnblood · #5 03-18-2011, 03:13 PM

Well the shake will happen in whatever gear I'm in once I'm about 70+...I had all the suspension in the rear redone...it was off a little so they trued everything...at this point I was thinking a race shop that does autocross might help but not sure who in the area would be a good place to look for something like that...

nicks67ca · #6 03-18-2011, 08:35 PM

I had a bad vibration after an t56 swap I did in my 67. I checked everything.....drive line angle, drive shaft, wheels, everything. I was using solid body mounts, with an 8pt cage, and a brand new performance trans mount. for some reason all that acted like a big tuning fork and once i swapped out the hard trans mount for a "stock replacement" my vibration went away. Not even a hint in the shifter. Its a pain but you'll get it. good luck.

ErikLS2 · #7 03-18-2011, 08:51 PM

^^ is the direction I would take. Maybe there's nothing "wrong", just too much unforgiving mounting of stuff and everything is transmitted into the pass. compartment.

All cars have vibrations in them, it's all how they are controlled really. If you look at a modern car they do all kinds of things, specific rubber compounds in the mounts, mass dampers hung off of all kinds of things and so on.

How bad is the vibration? Does the mirror just buzz or can you feel it in the seat, steering, floor boards, shifter, etc.?

BanditDave · #8 03-19-2011, 06:53 AM

I was going to mention mounts, but also check to see if you have any bent rims...if it is on the back then you will feel it in the car as there is no other path to the driver. With the front you can get immediate response from the steering wheel.

Good luck....you're already making me regret putting PST engine and trans mounts in my car...haha.

You'll figure it out....you're just in the PITA phase now.
Dave

sweatnblood · #9 03-19-2011, 07:33 PM

Thanks for the help guys...yea I'm going to see if the mounts do help...I know I have some solid mounts...so if this is the prob...I'm just going to laugh at my dumb ass...lol...

DEIGuy38 · #10 03-19-2011, 11:08 PM

my brother in law put an LT1 and T 56 with out raising the trans tunnel and had a bad vibration due to driveline angle. He had a cv driveshaft built and the vibration went away. Similar to this
http://jeep.off-road.com/jeep/news/n...ods-35142.html