I need help.

[Texasmustang]

I have no extra money to throw at this.
Ok i have a 86 coupe. It was originally a v6 I converted it to a 5.0. It has a t-5 trans and a 8.8 rear end with 373 gears. It has a fresh balanced drive shaft and u joints. And a set of bbk upper and lower control arms. I have a vibration I feel threw the shifter and the car as I get faster not sure what it is and I would like to find someone who might can help. I love in Royse city and will drive it local. Thank
You and pm me if you will help.

[Stunter Bob]

Probably a u-joint

[Texasmustang]

U joints are new.

[homealone]

Is it more speed or rpm related? If speed, does it get worse or does it come and go?

Some things to check, tail shaft bushing, wheel balance/bent wheels/bad tires. If you only feel it in the shifter, check your fan clutch and water pump for play. My 86 had a bad vibe under deceleration and it was a bad fan clutch.

[Texasmustang]

It gets worse the faster you go. Almost sounds like a grinding noise. Idk. Guess I will drive it til it breaks

[Texasmustang]

I just want someone who knows there stuff to just ride with me or I will even let them
Drive it. Cause I am sure I will never figure it out.

[garycrist]

Try re-clocking the drive shaft.

[Texasmustang]

I will try that again.

[89ghost]

if its vibrating its the pilot bearing.

[Texasmustang]

pilot bearing looks good. i checked it the other day when i took the tranny out. this motor only has maybe 600 miles on it so far. everything inside out is freash and new

[71chevellejohn]

Bad Tire/tire out of balance?
Bent rim?
Engine/Trans mounts in good shape?
Has the harmonic balancer slipped?
If the engine was replaced/worked on, is it the correct balance on the flywheel, crank, and harmonic balancer?

Just throwing ideas out there - I'm too far away to come take a look or I would. If you must drive it, be easy on it.

Good luck.

[Texasmustang]

Balancer new. New tires and balanced. Just rotated them same thing. Not sure on flywheel balancer weight. It is speed related not rpm. I can rev the motor all day as high rpm as I want no vibration. I am leaning Towards the rear end pinion bearing. It seems a lil loose where the drive shaft bolts to it.

[Woods Racing Transmission]

I thought you changed the rear end?

[Texasmustang]

Not yet. Was going to but hurt my knee before I could. It seems like the faster I go it goes from a vibration to a grinding. But might just be a bad vibration.

[Texasmustang]

Ok with the drive shaft out and running the car I get the same vibration through the shifter. What would that be.