I was wondering about how much of an increase rearwheel hp you might get from a lighter driveshaft. I know that you lose about 15-20 percent of your flywheel hp through the drivetrain. If you got an aluminum driveshaft that was like 20 lbs lighter what would that do for your rwhp.

 

check out www.ws6.com

 

I was reading the TSB http://www.ws6.com/shaft.htm does this mean my 96 can have an aluminium drivesahft for no cost to me?

 

if your car is still under warranty, yes

 

You also aren't going to save "like 20 lbs" from a new driveshaft, no matter what you make it out of. The stock steel shaft only weighs about 17#.

Most of the drivetrain loss is in the rear axle... 7%, and in other friction loads like bearings and gears in the tranny, or fluid losses in the convertor. As noted in the ws6.com dyno test, there is a loss associated with the inertia of the rotating parts, but it isn't a big part of the typical 15-20% you quote. Inertia loads are due to anything that rotates... like the flywheel (or flex-plate), clutch, tranny parts, axles and wheels. Reducing the weight of any of these will reduce the loss in the drivetrain.... but nothing really spectacular.

 

Any gain from a reduction of moment in the rotating parts will also be proportional to the rate of acceleration; generally, on the street, it will make more of a difference in lower gears, less of a difference in higher gears.

As stated before, the gain due to a lighter driveshaft will be negligable...

 

the 275 hp lt1's is that flywheel or Rw?

 

It's flywheel. You have about 245 to 255 RWHP stock up to 95 with single cat's.

 

dunno how much HP you'd free up but your ride quality will get much better, guarranteed night/day difference, basicly, what you thought was normal before will no longer be there, amazing mod

 

I heard they produce 50 HP at the flywheel!! Great mod!

 

hmmmmm

 

Yeah!!! I bought a 200Shot Carbon Fibre drive shaft that made my stock LT1 run 11.8@115MPH!!!

 

I know your joking but, lets lay down the crack pipe , We all know it's 60hp.

 

that bulliten does not mean you get a alluminum ds. that is bulliten. so if your car is under warranty that gives them a starting point to start trouble shooting the vibration. and it just gives the part #s for replacment.

ive taken that same paper to the dealer to a friend of mine that works there (he has been a gm tech for 20 years). he said that the bullitens are for the techs assistance. it does not constitute the repacement of the ds even if its underwarranty. if they say the vibration is not from the drive shaft but from somewhere else, they may not replace it at all.

its just a heads up, not even a recall

now you can grip alot and they may replace it. but your more likely to get it replaced under the warranty with a little gripping.

 

I had a little vibration a couple of years ago, went to my dealer and they put in the updated shaft at no cost to me.It was the one and only time I had no problems with these clowns.