3" aluminum driveshaft

Glenn Briglio · 05-09-2018, 08:03 AM

What company have you dealt with for a 3" aluminum driveshaft that you are happy with?

Jim Caughlin · 05-09-2018, 11:07 AM

I have a 3" alum driveshaft that was built by Inland Empire, I cross the finishline at 9400 RPM and have relatively low HP. Interestingly, I was able to test duplicate steel (13#) and the alum one (10#) on back to back runs, zero performance difference. Actually, I can't say that I saw any noticeable performance improvement from any of the lightweight parts that I incorporated over the years (alum spool, lightened ring gear, gundrilled axles, etc), go figure...

One other note on going to a 3" alum driveshaft, don't forget about resonance / critical speed, it isn't purely a matter of strength. I believe there is a chart on the Mark Williams site that lists length vs RPM for different driveshafts.

Jim Caughlin
SS 6019

Race Clean · 05-09-2018, 01:39 PM

Quote:

Originally Posted by Jim Caughlin

One other note on going to a 3" alum driveshaft, don't forget about resonance / critical speed, it isn't purely a matter of strength. I believe there is a chart on the Mark Williams site that lists length vs RPM for different driveshafts.
Jim Caughlin
SS 6019

I think that is the reason right there to use a Aluminum when you are allowed.

55 Chevy · 05-10-2018, 02:27 PM

I put a M/W 3" aluminum in mine. Very happy with it.

Allan

Glenn Briglio · 05-10-2018, 04:33 PM

Quote:

Originally Posted by 55 Chevy

I put a M/W 3" aluminum in mine. Very happy with it.

Allan

M/W doesn't make a 3' aluminum shaft only 3.5

jmcarter · 05-10-2018, 04:47 PM

Another vote for M/W....only took them a few days from ordering my aluminum shaft to arrival; great technical support when ordering and absolutely no problems.

Bpozzi · 05-10-2018, 06:17 PM

We run 3” aluminum in all my cars and Fleetpride does them all. They do a great job, and they are local (nationwide)! If something goes wrong, we just drive over and they take care of it vs sending it back and talking to a guy on the phone.

Jeff Stout · 05-10-2018, 08:46 PM

Quote:

Originally Posted by Jim Caughlin

I have a 3" alum driveshaft that was built by Inland Empire, I cross the finishline at 9400 RPM and have relatively low HP. Interestingly, I was able to test duplicate steel (13#) and the alum one (10#) on back to back runs, zero performance difference. Actually, I can't say that I saw any noticeable performance improvement from any of the lightweight parts that I incorporated over the years (alum spool, lightened ring gear, gundrilled axles, etc), go figure...

One other note on going to a 3" alum driveshaft, don't forget about resonance / critical speed, it isn't purely a matter of strength. I believe there is a chart on the Mark Williams site that lists length vs RPM for different driveshafts.

Jim Caughlin
SS 6019

^^^ This. I found nothing in a BBC running high 9s bottom 10s and changed all the same things

55 Chevy · 05-10-2018, 11:11 PM

Quote:

Originally Posted by Glenn Briglio

M/W doesn't make a 3' aluminum shaft only 3.5

Your are absolutely right. It is a 3.5". Sorry my mistake.
And I just pulled it out last week!

55 Chevy · 05-11-2018, 12:48 AM

Quote:

Originally Posted by Glenn Briglio

M/W doesn't make a 3' aluminum shaft only 3.5

Your are absolutely right. It is a 3.5". Sorry my mistake.

05-09-2018, 08:03 AM	#1
Glenn Briglio VIP Member Join Date: Nov 2002 Location: Massapequa Park,NY Posts: 1,206 Likes: 1,727 Liked 822 Times in 264 Posts	3" aluminum driveshaft What company have you dealt with for a 3" aluminum driveshaft that you are happy with? __________________ 1989 Camaro Iroc-Z I/SA B&B Auto Machine Shop.

05-09-2018, 11:07 AM	#2
Jim Caughlin Senior Member Join Date: Mar 2002 Location: Woodburn, Or Posts: 635 Likes: 70 Liked 693 Times in 208 Posts	Re: 3" aluminum driveshaft I have a 3" alum driveshaft that was built by Inland Empire, I cross the finishline at 9400 RPM and have relatively low HP. Interestingly, I was able to test duplicate steel (13#) and the alum one (10#) on back to back runs, zero performance difference. Actually, I can't say that I saw any noticeable performance improvement from any of the lightweight parts that I incorporated over the years (alum spool, lightened ring gear, gundrilled axles, etc), go figure... One other note on going to a 3" alum driveshaft, don't forget about resonance / critical speed, it isn't purely a matter of strength. I believe there is a chart on the Mark Williams site that lists length vs RPM for different driveshafts. Jim Caughlin SS 6019

05-10-2018, 02:27 PM	#4
55 Chevy Member Join Date: Feb 2008 Location: Calgary,Alberta area Posts: 221 Likes: 15 Liked 12 Times in 11 Posts	Re: 3" aluminum driveshaft I put a M/W 3" aluminum in mine. Very happy with it. Allan

05-10-2018, 04:47 PM	#6
jmcarter VIP Member Join Date: Dec 2008 Location: Richmond Hill GA (and Port Ludlow WA) Posts: 4,118 Likes: 1,970 Liked 2,678 Times in 850 Posts	Re: 3" aluminum driveshaft Another vote for M/W....only took them a few days from ordering my aluminum shaft to arrival; great technical support when ordering and absolutely no problems. __________________ Jim Carter 2340 Super Stock 2340 SST/2340 Stock

05-10-2018, 06:17 PM	#7
Bpozzi Junior Member Join Date: Dec 2014 Posts: 86 Likes: 12 Liked 98 Times in 19 Posts	Re: 3" aluminum driveshaft We run 3” aluminum in all my cars and Fleetpride does them all. They do a great job, and they are local (nationwide)! If something goes wrong, we just drive over and they take care of it vs sending it back and talking to a guy on the phone.