Aluminum

I doubt if you would notice the difference from a responsive point of view. One of the main advantages is less weight and therefore less vibration

Duplicate post

Duplicate post

Most say that you butt meter will not see any difference with an aluminum shaft. There should be an advantage though, as you loose about 6 lbs of rotating weight from one of the critical areas.

For a while I looked to purchase a beefed up driveshaft for my Stang which had the puny 1310 u-joints and rubber vibration dampner. I found a place that had aluminum shafts priced less than what the big boys wanted for their steel shafts. After checking out his references, I ordered a custom length aluminum driveshaft with 1330 solid spicer U-joints, new tranny and pinion yokes, and new U bolts. I received all of it in less than one week. Less than $340 for all (with u joints and tranny yoke installed):




The shaft was made with 1/8" Alcoa 6061-T6 seamless tubing:




Here are the old 1310 parts and the new 1330 parts:




The old steel shaft had the rubber insulator. OK for lessening vibration, but not good for strength:

View attachment 385171


Here are the old and new pinion yokes. Note the difference in width. Small one is a 1310 and the new larger is a 1330. Also there is a difference in U-joint cap size. 1 1/16" vs. 1 1/8" at the pinion yoke:

View attachment 385172


Another shot of the rear pinion yokes:



I put both shafts on a postal scale and the stock one weighed a little over 18lbs vs slightly less than 12lbs for the aluminum shaft. You can definitely feel the 6+ pounds difference.

I haven't installed the new shaft, so I can't say how it will perform, but it should handle all I can put to it with the stroker, 4 speed and sticky tires:

an aluminum driveshaft has less rotating mass, and therefore you should notice less vibration, especially at speed.

sixtyfive said:

How much would i benefit from upgrading to an aluminum driveshaft? ive been told that this will make your car feel slightly more responsive.... is it worth the buy?

Click to expand...

Aluminum is less rotating mass and therefor more HP to the rear axle, plus they look nice and make great conversation at the car shows.

Try to get ones with the Spice U-Joints.

HistoricMustang
www.historicmustang.com

Maybe Dennis wouldn't mind fessing up his source to the rest of us?

Jimmys66 said:

Maybe Dennis wouldn't mind fessing up his source to the rest of us?

Click to expand...

Mark at:

Machine Service Inc
9304 Allen Rd
Allen Park, MI 48101
(313) 388-7166

email: Elks1945@aol.com

On my 2002 Stang I was able to notice a difference. I think the rpms both climb faster at WOT and also fall a little faster when you push in the clutch. Not a spectacular difference, but enough to notice right away, at least for me.

Thanks for the heads up, Sounds like Machine Service is less than ten minutes from me.

Thanks Dennis. He's not far from me either. About 2.5 hours.

Mark will definately be getting a call from me.

Did he by chance tell you how much hp he thought it would take?

Jimmys66 said:

Thanks Dennis. He's not far from me either. About 2.5 hours.

Mark will definately be getting a call from me.

Did he by chance tell you how much hp he thought it would take?

Click to expand...

My $332 price tag included all the parts shown in the first pic and the shipping. If you live close, you could save about $20. Get Mark to email his measurement sheet and fill it out. I emailed mine back on a Thursday and the shaft and all parts were ready for mailing on Friday.

I told him I had a drag car with 500 HP and he said that my shaft should easily handle it. We'll see. . . . .

My next build will be in the 450hp range and will see slicks every once and a while. I should be good then.

Thanks again and by the way, nice slipper.