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Does any one here have an aluminum driveshaft. If so where did you get it, how much and have you noticed any improvement? Interested in Carbon fiber as well.
Some questions:
1. Are you experiencing vibration.
2. If so, is it from a Tremec or other transmission modification?
3. What is the diameter of your present shaft?
4. Did you have your present shaft balanced after receiving it or are you running the stock shaft that came with the car?
Am asking because I've encountered an eighteen month struggle to cure my C3 of vibration following installation of a Tremec. Everything but the nut behind the wheel has been replaced. Tried a three inch shaft (non-aluminum) which was one inch larger than what came from Classic Chevy and a half inch larger than Keisler supplies in hopes that that this would cure it. No such luck. Next step is to dis-assemble the Tremec to learn if there is a defect in the fifth gear. Whether there is or not, I'm strongly thinking of going back to my stock Muncie, still sitting quietly in the corner of the shop along with the original factory driveshaft.
For my 700R4 conversion I installed a shortened and rebalanced 1995 Corvette aluminum driveshaft. The aluminum helps to absorb harmonic vibrations instead of amplify them like steel shafts.
Some questions:
1. Are you experiencing vibration.
2. If so, is it from a Tremec or other transmission modification?
3. What is the diameter of your present shaft?
4. Did you have your present shaft balanced after receiving it or are you running the stock shaft that came with the car?
Am asking because I've encountered an eighteen month struggle to cure my C3 of vibration following installation of a Tremec. Everything but the nut behind the wheel has been replaced. Tried a three inch shaft (non-aluminum) which was one inch larger than what came from Classic Chevy and a half inch larger than Keisler supplies in hopes that that this would cure it. No such luck. Next step is to dis-assemble the Tremec to learn if there is a defect in the fifth gear. Whether there is or not, I'm strongly thinking of going back to my stock Muncie, still sitting quietly in the corner of the shop along with the original factory driveshaft.
Did you verify that the angles of the trans yoke and diff yoke are equal and opposite +/- a degree or so? Many times that is overlooked and can be a primary source of vibration.
Does any one here have an aluminum driveshaft. If so where did you get it, how much and have you noticed any improvement? Interested in Carbon fiber as well.
I would ask - what are you trying to do? IMO - the drive shaft on a Vette is so short that I just use a bigger U-jointed steel in a cage. I have an OD tranny with 4.11 rear end and have had some very high drive shaft rpm without a problem.
The goal would be increased performance. No problems with vibration. With me in the car weighs aprox 3200 pounds. Not looking to do anything to the engine, runs and sounds great. Instead looking to take weight off. Figure removing reciprocating weight kills two birds with one stone. For those who have switched, how much weight did you save?
I have an aluminum flywheel, and will be getting alumiunm rear wheels for the track. You say a pound or two, I would have thought more. Can anyone give an exact figure. Would the half shafts provide more potential weight saving?
aluminum or carbon drive shafts like from drive line specialties is only a pound or two.
what do you exactly mean here, Gkull? that an alu or carbon driveshaft is 1 or 2 lbs lighter then steel stock? or that they weight only 1 or 2 lbs?
I can't remember who was on here. Maybe Red73. He bought the bigger carbon fiber half shafts and drive line. Then he weighed the stock steel and the carbon fiber and the weight difference per piece was only a pound or two.
It was his opinion that the new carbon items were heavy because of the larger ends and U-joints. So real savings in weight would be a comparision from 3 inch steel HD half shafts and drive line to carbon fiber heavy duty 3 inch parts.
The carbon fiber 1/2 shafts are 2.5#'s lighter per shaft.
We do not list the driveshafts in carbon on the site b/c you need to take measurements 1st. Our carbon driveshafts come in 2 size diameters. 3.25" & 3.75". Not all can fit the 3.75" shaft in the tunnel. The differences between the 2
3.75" Tube comes with aluminum end yokes and uses 1350 u-joints. If it fits and you don't have a 1350 pinion yoke, you will have to use a conversion joint. 1350 to 1330. Or buy a Mark Williams Slip yoke and pinion yoke that take the 1350 joints. GrandsportC3 went this route and we had to shave a little bit off of his slip yoke b/c it hit one rivet on one side of the tunnel(right side.)
The 3.25" Tube only comes with Steel ends, just like the factory. No real weight savings either. We can't find 1310 or 1330 end yokes in 7075 aluminum so thats why steel is used.