cerberus

What was the purpose of the aluminum driveshaft?

lethaldomestics

They tend to be lighter. i heard they are a little better balanced and easier on the u joints.

JamesC

iTrader: (5)

The link below might be interesting:

http://ws6.com/mod-1.htm

JamesC

TTOP350

iTrader: (8)

Did a quick search on the net and the only pic or scan I can find of it is copy writed by WS6.com and I cant copy an save it..
Wonder how they can copywrite a copywrited (by GM) document?

Just want it for my file..

NCGuy68

I'am not a GM engineer, but my guess is:
Aluminum driveshaft = less rotating mass = better fuel economy.

xcalibur

I second that motion, they used every trick in the book to get the mpg up on these cars.

cerberus

I do get driveshaft vibration at highways speeds, it is apulsing vibration sound. I was thinking about buying an aluminum shaft.

TTA 1387

What file? The TSB? or the dyno?

I think I still have the TSB.

TTA 1387

That is what my WS6 did before I got the 1LE driveshaft. It fixed it for the most part. I now have a carbon fiber driveshaft and that took out all the vibration that was left.

TTOP350

iTrader: (8)

The TSB. just wanted to copy and save..

cIaRmOaCrZo

i was just wondering about a carbon fibre drive shaft. wasnt sure if they were made for 3rdgens yet or not. where and how much was the carbon shaft TTA1387??

TTOP350

iTrader: (8)

2seconds on google
http://www.vividracing.com/catalog/a...-30AW-31-41.75

coolram62

iTrader: (2)

I had the same problem and went through everything before dropping the driveshaft. It was out of balance and slightly out of round (figures i'd have both). I bought a JG-1 driveshaft and problem solved for less expense than buying a new steel one (did save the old as it's an original part). The merits are less reciprocating weight and less harmonics. And the weight saving for gas mileage makes sense - like no factory t-tops on later L98 cars.

TTA 1387

Here it is.

Andre#4

This is on a tta, a carbon fiber driveshaft???

TTA's have the steel shafts. Are they interchangeable with regular third gen drive shafts, even though they have 2004r instead of 700r4?

I have always thought tta vibrates too much. I would love to help this with an aluminum or carbon driveshaft. That is why I ask.

Are the driveshafts different sizes/types for 700r4 and t5 transmissions?
Are the driveshafts different sizes/types for 700r4 and 2004r transmissions?
Are the driveshafts different sizes/types for 4th gen and 3rd gen? (the TSB is for 4th gen)


I think aluminum driveshafts were used on some non 1le cars too, werent they?

ZZ3 Z28

Don't drive shafts have to be about 4 degrees out of direct plane to the rear axle to prevent harmonics? What I mean by that is the engine/transmission and the drive shaft are not in a perfectly straight line to the rear axle. They are out of line by about 4 degrees or some number.

>Andre, check out this link for Spohn.

http://www.spohn.net/shop/1982-1992-...n-Driveshafts/

QUICKCHICKEN

iTrader: (12)

yank your shaft and check the U joints. if you have ANY resistance, hangs or anything when you rock the U joint point to point, this will cause the runout your feeling.

cerberus

No doubt, but having an aluminum driveshaft is COOL!

TTA 1387

No, not on the TTA. Its on my 96 WS6.

I know several guys with TTA's have gone to aluminum and a few to carbon fiber without problems. I never had a problem with the stock steel shaft in mine.

As far as fitment, nothing matches the TTA because of the 2004R. All the 3rd gen 700R4's and 4th gen's will interchange. That's why the TSB for the 3rd gen aluminum shaft works. In 98, they came out with a new aluminum shaft for the LS1 cars. All bolt in. As far as the T5 cars, I'm not 100% positive so I won't say anything. Can't remember if they were different or not.

JamesC

iTrader: (5)

No.

Unsure, but the TH350, long and short tail, requires different length shafts.

Interchangeable. The fourthgen shaft not only has a damper, but is also larger in diameter.

Though the JG1 alum shaft is often called the 1LE shaft, more non-1LE cars were equipped with it than actual 1LE's.

JamesC

White93z34

iTrader: (1)

I love my JG1 driveshaft. Bought it years ago for my old SC never installed it and just got around to installing it in my new iroc Right off the bat I notice less vibration, though my old driveshaft had some not as good feeling u joints in it when I removed it.

Aaron91RS

iTrader: (2)

The 4thgen LS1 stick guys making real power are twisting the even bigger 4thgen aluminum driveshafts like pretzels. How come 3rdgen people with smaller diameter one's aren't?

JamesC

iTrader: (5)

I've read that while the fourthgen shafts are larger in diameter, they have thinner walls.

JamesC

TTA 1387

Only the A4 4th gens came with the damper. My original steel driveshaft didn't have the damper. All 98+ M6 cars got aluminum with no damper.

Andre#4

What do tta people do when they want aluminum or carbon fibre? Buy custom, or shorten/lengthen JG1? I would like to try aluminum or carbon in my tta.

TTA 1387

Custom for the most part. Spohn and a few other vendors sell driveshafts that you can order ready to go.

Denny's and PST just need your measurements and they will make one for you.

White93z34

iTrader: (1)

Because my car pushes a shameful 190hp from the backside of the engine

jahblah

Does anyone know about the fitment for the WC T5? I most def want one and its most def coming out of the boneyard lol would like to know what year/trim donor I need to look for. Please and Thank You

JamesC

iTrader: (5)

Direct fit. For the thirdgen gen shaft, look for RPO JG1.

JamesC

jahblah

I may be misunderstanding your answer good sir. Are you saying the RPO JG1 is the direct fit? And if so, what donor car(s) and year(s) would that be coming out of? Not sure if the autos and manuals are the same size or what.

JamesC

iTrader: (5)

Yes, JG1 is a direct fit for your T-5 and/or 700R4. You'll probably have more luck searching for the RPO than a particular model, IMO.

JamesC

jahblah

Thanks JamesC!!!! Just what I needed