Any gas mileage gains experienced with an aluminum driveshaft? Just wondering. Also what is the most anyone has increased their mileage?

 

You gainpower to the rear wheels thats all I know of. I don't hink you get batter gas mileage I don't see how ou would anyways.

 

Yes and no, there will be less power sapped since that driveshaft is lighter, and takes less time to spool up, meaning less time in higer RPMS upon accelleration. Also, a little less power is required to keep it going...so yeah, maybe a little better gas milage, but in the grand scheme of things, you removed what, 20 lbs from a 3500+lbs car? It isn't going to make a huge difference, but every little bit helps, and like I said, it will help performance by accellerating faster My gas milage sucks, but then, 3.73 gears don't help with that

 

You would have to gain some gas mileage. You're reducing weight on the car, and reducing rotational mass which saps the engines power even before it gets to the wheels.

It shouldn't take anypower to "keep" a driveshaft going. Objects in motion tend to stay in motion. The only gain would be upon accleration. It should also help braking some. It won't "try to stay in motion" as hard as the steel shaft would. Plus the car will weight less as a whole.

Has anyone actually noticed a gain after installing one is what I'm asking. A gain that they are sure is a result of the aluminum driveshaft because there was not another mod that went on at the same time.

 

I'm also know there isn't going to be a huge difference. I expect upto 1 mpg though. Just want to see how long it will take one of those to pay for itself. On my car, if it gained me 1 mpg, it would take 100,000 miles, he he.

I plan on getting one this summer too. Is the 4th gen shaft as light as the 1LE shaft?

 

that is true - but remember, friction is still present...

 

Hey, where could I look to find an aluminum rive shaft? any sites? For a third gen, 91 RS 305 TBI

 

I meant to say, Drive shaft. sorry.

 

The heavier spinning mass will maintain speed better going up and down even small hills--maybe mileage would be worse with the aluminum shaft? If you are worried about friction, the aluminum shaft is quite a bit bigger. I'll bet you won't see a noticeable change in mileage.

 

The weight of the shaft is what would cause the friction. The size would cause more air friction though.