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Topic: Balanced Driveshafts? (Read 1545 times) previous topic - next topic

Balanced Driveshafts?

Hey all,
I'm about to swap rear axles from one car to another.  I've always been told that we have 'balanced' driveshafts and that if they are not re-mounted exactly as the factory installed them, you will get vibration.  Well, when you are mating up a driveshaft and a rear end that didn't originally go together, how are you supposed to do that?  Or is that all a bunch of stuff?  Do I need to plan to install the matching driveshaft from the donor car as well as its rear axle?  Thanks for any advice.

Fordman3

 

Re: Balanced Driveshafts?

Reply #1
I just recently swapped out my 7.5 rear for a 8.8 and have had no vibration problems with the original driveshaft. I was concerned like yourself but so far so good.
[SIGPIC][/SIGPIC]http://www.fquick.com/slicksport88
88 Sport - 5.0HO, Mass Air, A9L, 73mm C&L meter, BBK CAI, 255 lph pump, 1.7 roller rockers,Professional Products damper, Chuck W motor mounts, BBK shorties & H-pipe, Flowmaster 40 series, 8.8 rear w/3.27's, 93 Cobra M/C, BAER 13in. drilled/slotted rotors front and back, cobra calipers, Russell braided brake lines front & back, C/C plates, 03cobra rims, 255/40/17 Nitto 555's all around

Re: Balanced Driveshafts?

Reply #2
It's always "best" to keep them installed the way they came off the car, but "usually" it makes no difference.  Install it and drive it...you'll know once you get the car up to speed if you're going to have any issues or not.
Long live the 4-eyes!  - '83 Tbird Turbo - '85 Marquis LTS - '86 LTD Wagon