I've discussing my high speed vibration alot lately here and the vibration is nor apperent around 50+ mph. What is the deal? How do you check for a bent axle? I just put 4 new tires on ans everything seems tight up front. could the steering box or pitman arm be bad & causing the vibration?

thanks!!

------------------
1989 FIREBIRD FORMULA 350
K&N, ACCEL CAP & ROTOR,
FLOWMASTER AMERICAN
THUNDER CAT-BACK
http://members.fbody.com/tomahawk350/

 

Have you tried having the driveshaft balanced? That is a common problem with our cars. Mine included. Fixed my vibration that I couldn't trace to the front or rear wheels. I would think a bent axle would be checked by running car on jack stands and looking for wheel wobble.

------------------
91 Camaro RS 5.0L Black Convertible 700R4
** Added so far **
*GM Wonderbar,Alston SFC's,spohn LCA's and Panhard rod
*Turbo City Inj Spacer
*Dual Snorkel Air Filter
*March Performance Pulleys
*GM 3.42 Gears with OEM Zexel POSI
*Edelbrock headers
*3" High Flow Cat
*3" Dynomax Exhaust
*Walbro 255 lph Fuel Pump
***Future 330hp Vortec Crate with LT4 hotcam and 454 TBI

 

I also suggest having the driveshaft balanced. I had similar problems and the driveshaft was the main reason. You might want to have your new tires rebalanced too. I've had bad balance jobs on brand new tires before.

 

I went though the same problem, it turned out my drive shaft was bent, So I put a new steel one in and it was back to normal, I then replaced it with a aluminum one and what a diffrence that made.

------------------
86Z28, GM 350, Jet perf Q-jet & chip Dual snorkel air cleaner, Edelbrock performer intake, Edelbrock headers, Edelbrock cat-back, Off road pipe, MSD 6AL, Accel Super Coil, Taylor Spiro-pro wires, Rapid fire plugs, Jet fan switch, World class t-5, Hurst Short Throw Shifter, Ram Flywheel, Center force dual friction clutch,Aluminum drive shaft, BW disc rear 3.45's & a posi, PBR calipers, Earls braided brake lines, Polygrapite bushings all the way around, poly tranny mount & torque arm mount, Hotchkis lower control arms & panhard rod, Rancho limiter straps, KYB struts & shocks, Gm Wonderbar, Edelbrock strut tower brace, SSM sub frame connectors, Jamex lowering springs, Carbon metallic brake pads, Crossed drilled rotors, Mobil 1 Tranny fluid & motor oil, GM syntheic rear end oil, K&N, Grant stering wheel, 1,200 watt system, Jet Black Paint, 91 Z28 rims, 92 wing, Tinted windows.

 

I heard that I can get an aluminum ds made for my car for about $100. I this is true I'm going to just do that.


------------------
1989 FIREBIRD FORMULA 350
K&N, ACCEL CAP & ROTOR,
FLOWMASTER AMERICAN
THUNDER CAT-BACK
http://members.fbody.com/tomahawk350/