Mustang Aluminum Driveshaft Review

Posted 9/19/2013 by Jeff Jimenez

Improve acceleration and reduce unsprung weight in your 79-04 Mustang with a Ford Racing Aluminum Driveshaft! Watch this informative review video to see which one is best for your Stang.

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Thinking about adding an aluminum driveshaft to your 1979-2004 Mustang? Look no further than the high quality Ford Racing aluminum driveshafts. The FRPP driveshafts are constructed from high strength, 3.5" diameter 0.114" wall thickness 6061-RT62 aluminum seamless drawn tube. Then it is fitted with heavy duty 1330 u-joints and Mustang correct transmission yoke and axle flange. This allows for much greater power handling over the stock steel driveshaft. Best of all they can improve your acceleration by replacing that ridiculously heavy factory steel shaft.

The reduced un-sprung and rotational mass equates to more power to the wheels. The Ford Racing drive shafts are high speed balanced to further help reduce driveline vibrations. These are available in two different models. See below for more details.

M-4602-G 1979-04 FORD MUSTANG FORD RACING ALUMINUM DRIVESHAFT

Features & Tech Specs:

  • 28 Spline Yoke
  • measures 45.5" long, center of u-joint to center of u-joint
  • rear axle flange will bolt right to any 7.5" or 8.8" rear end in one of the below Mustang's.

Fits:

  • 79-95 Mustang 5.0L/5.8L with Manual Transmission (SROD/T5)
  • 79-95 Mustang 5.0L/5.8L with Manual Transmission (Tremec 3550 - Must use driveshaft spacer on 94-95)
  • 83-93 Mustang 5.0L/5.8L with Automatic Transmission (C4/AOD)
  • 94-04 Mustang 3.8L/3.9L V6 with Manual Transmission (T5)
  • 96-04 Mustang 3.8L/3.9L V6 with Automatic Transmission (Must Re-use Factory Transmission Yoke from Stock Driveshaft)

M-4602-J 1979-04 FORD MUSTANG FORD RACING ALUMINUM DRIVESHAFT

Features & Tech Specs:

  • 31 Spline Yoke
  • measures 45.5" long, center of u-joint to center of u-joint
  • rear axle flange will bolt right to any 7.5" or 8.8" rear end in one of the below Mustang's.

Fits:

  • 79-95 Mustang 5.0L/5.8L with Manual Transmission (Tremec TKO/TKO 500/TKO 600 - Must use driveshaft spacer on 94-95)
  • 96-98 Mustang Cobra 4.6L 4V with Manual Transmission (T45)
  • 96-04 Mustang GT/Bullitt 4.6L 2V with Manual Transmission (T45/TR3650)
  • 03-04 Mustang Mach 1 4.6L 4V with Manual Transmission (TR3650)
  • ***Will NOT fit 1999-2004 Cobra* with IRS ***
  • Some 99/01 Cobra owners have reported the M-4602-J Driveshaft will fit unmodified, while most report that the M-4602-J needs to be shortened 1" to fit the 99/01 Cobra


About the Video

Mustang Aluminum Driveshaft Review

Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. The best place to go for anything Mustang related!

Published on 2013-09-19
Jmac shows you the differences between the Ford Racing Mustang Aluminum Driveshafts – 79-95 Mustang Driveshaft, M-4602-G & the Ford Racing Mustang Aluminum Driveshaft, M-4602-J. Ford Racing (FRPP) has been producing quality Mustang Aluminum Driveshafts for a long time. These drive shafts reduce rotational weight which equals improved acceleration. They work with a vast amount of transmissions and with both 7.5 and 8.8 Ford rear ends. These are a great way to finish off your Project Fox Body Mustang or Project SN95 Mustang’s Driveline. Don’t forget to pick up a driveshaft safety loop to complete your aluminum Mustang driveshaft install.


INFO ON 79-95 FORD RACING DRIVESHAFT M-4602-G:

The FRPP Ford Racing Mustang Aluminum Driveshaft improves your Mustang in two ways. First, it reduces both unsprung & rotational weight improving acceleration. Second, the Ford Racing Driveshaft reduces driveline vibrations for a smoother ride.

This FRPP Ford Racing Mustang Aluminum Driveshaft fits 79-95 Mustang/Capri 5.0/5.8L vehicles with T-5/SROD/C-4/AOD & 79-93 Mustang and Capri with Tremec Transmissions and 7.5" or 8.8" axles. Ford Racing Driveshaft has a 28 spline yoke installed. A 31 Spline Driveshaft Yoke is available separately & can be installed to fit more applications.


INFO ON 79-95 FORD RACING DRIVESHAFT M-4602-J:

The FRPP Ford Racing Mustang Aluminum Driveshaft improves your Mustang in two ways. First, it reduces both unsprung & rotational weight improving acceleration. Second, it reduces driveline vibrations for a smoother ride.

This Ford Racing (FRPP) Aluminum Driveshaft fits 1996-04 Mustang GT, 1996-01 Mustang Cobra 4.6L, & 03-04 Mustang Mach 1 with manual transmission. 31 spline yoke. Also fits 79-93 Mustang using a Tremec TKO transmission with 31 spline output!!

Will not fit 2003-04 Cobra with IRS.
Transcript
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A very popular upgrade on '79 to 2004 Mustangs is an aluminum driveshaft. Now, why exactly do you need an aluminum driveshaft? Well, there's a couple of main reasons, first one being, the aluminum driveshaft's about four pounds lighter than the stock unit, meaning less rotational weight. And less rotational weight means it takes less engine power to turn that driveshaft and more of that engine power makes it to your rear tire.

The next major reasons, your factory driveshaft may have suffered some damage along its life. The U-joints are probably shot, and your input may be grooved, causing a leak at the transmission tailshaft seal.

Now, if you went through replacing your U-joints, a new yoke, having your driveshaft rebalanced, you're getting up there in cost, and you've got a lot of time invested in running around. With an aluminum driveshaft, it's a simple bolt-in installation that you can do in your driveway in about 30 minutes.

Now, we've got a couple of different options here from Ford Racing, the M-4602-G and the M-4602-J. The G covers '79 to '95 Mustang with a manual transmission, and the J covers the '96 to 2004 Mustang with the manual transmission.

What's the difference between these two shafts? Not very much, just the yoke. These driveshafts are the exact same link. The yoke is the only difference. The G has a 28 spline. The J has a 31 spline. So this means if you've got a Fox body that requires a 31 spline yoke, just get the J. Save yourself the expense of buying a G, and a yoke, and then having to swap it out. No other company on the face of this Earth is going to tell you to save money. We will.

Now, let's get down to the weight of these driveshafts. The factory unit weighs in at 18.3 pounds. The M-4602-J, or I'm sorry, G, weighs in at 14.1 pounds. And finally, the M-4602-J weighs in at 14 and 1/2 pounds. Now, that extra 2/10 of a pound, well, that's the difference in the yoke because that 31 spline yoke is a little bit beefier than your 28 spline yoke.

Now, our installation on this, again, pretty simple. Can be done in your driveway with simple hand tools. A couple of things you may want to have on hand, a new set of driveshaft bolts and a new transmission tailshaft seal. That way you're completely leak-free when you go back together with this. Now, for more drivetrain parts and options for your Mustang, check out latemodelrestoration.com.

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Mustang Aluminum Driveshaft Review Tech Info

Available for the following Ford Mustang year models:
1979 (79) - 1980 (80) - 1981 (81) - 1982 (82) - 1983 (83) - 1984 (84) - 1985 (85) - 1986 (86) - 1987 (87) - 1988 (88) - 1989 (89) - 1990 (90) - 1991 (91) - 1992 (92) - 1993 (93) - 1994 (94) - 1995 (95)- 1996 (96) - 1997 (97) - 1998 (98) - 1999 (99) - 2000 (00) - 2001 (01) - 2002 (02) - 2003 (03) - 2004 (04)