I recently purchased a 1986 IROC-Z 28 with 52,000 miles on her. So far I've replaced the front struts and rear shocks, front end alignment and brand new tires all the way around. At interstate speeds 65 mph plus get a vibration coming from front end some where, kinda of puzzled of what this could be, anybodybwith ideas?

 

Wheels could be out of balance. Mine did it above 55. Could try that. Take your car in to a good reputable tire shop and see if they will run your front tires on they're balancing machine.

-V8R

 

Just had new tires and balancing done! Really thought that was the problem but nope

 

Common issue, it is the driveshaft. Can either get a new aluminum one for a '98-'02 Camaro/Firebird with the V8. Or get a new one from a shop such as Denny's.

RBob.

 

Thanks RBob would you recommend buying new or used? Browsed through eBay shortly saw a lot of used ones on there. And any other good places besides Denny's for driveshafts?

 

Big QUESTION: Did you have this Vibration before the new tires???? If not rebalance and rotate the tires.

 

Yes did have the vibration prior to new tires, one reason I replaced the old tires, had take it in to get old ones balanced and found the front tires were out of round from sitting to long, put 800 miles on them with no luck still vibrating, so replaced with news tires and that took care of some of the vibration but still get it especially anything over 60 mph, below 60 mph drives great.

 

For stuff like this I prefer new. A drive shaft is a wear item, and can also be stressed and fatigued. If you run across a used one and it is hands on, then check it. Examine for dents and/or gouges on the shaft.

Then move the u-joints and feel for notches. If it feels notch-y, then they are worn. The ears can also spread causing end play in the joints. So check the side-to-side play too.

There are many drive shaft companies out there. Inland Empire (Inland Imperial??) is another that comes to mind.

I've used truck re-builders to build a drive shaft. But they are not always balanced enough for high speed work. Hence the purchase of new drive shafts from companies that build them for hi-po use.

RBob.

 

 

Sounds like good advice to stick with new! Thanks for the info sir, much appreciated!

 

I once sold 60+ JG1 alum shafts, the so-called 1LE version. I never had a customer complain for any reason (I always checked for dents, gouges, lose of balance weights and so on and advised installing new U-joints). I've been running one that I purchased used for a number of years.

That said, you can't go wrong with new, though the cost may be prohibitive.

JamesC

 

Thanks James