5-Speed to 6-Speed AWD Conversion for the 3000GT/Stealth

by Jeff Lucius

In the Mitsubishi 3000GT VR4 and Dodge Stealth R/T Twin Turbo, the 6-speed transaxle offers many advantages over the 5-speed version.
For more information on our AWD system including all gear reduction ratios look at my web page 2-AWD.htm. The 6-speed drivetrain was introduced with the 1994 model year and continued until the end of 3000GT/Stealth production.

Listed below are the parts required to convert the 1991 to 1993 5-speed AWD drivetrain to a 1994+ 6-speed AWD drivetrain. Though the clutch is the same, you might as well install a new one and resurface or replace the flywheel if necessary. The front driveshafts are the same so do not need to be replaced. Problems may arise with the 6-speed cable brackets and levers hitting the BOV (especially the aftermarket GReddy Type S) and the lower radiator hose, so these two items may need updated or modified somehow. Some owners report that the 6-spd shifter assembly inside the cabin should also be used, rather than the 5-spd shifter assembly. You can re-use the all-wheel steering pump on the rear differential. Note that some later model Stealths Twin Turbos do not have the AWS feature and so their rear diffs are designed differently. The 6-spd drive gears (ring and pinions) can be transferred to your 5-spd rear diff - but this can be a major hassle and expensive. The major pieces are bolt on replacements and require no modification or extra brackets, etc.

Below are shops that may be able to help you repair, replace, or find drivetrain components.

Kormex Transmission Parts
2020 S. Vineyard Ave.
Ontario, CA 91761
800-429-5464; 909-947-0569
ask for Frank Martin
New and rebuilt Getrag transmissions
   and transfer cases
Synchros, output shafts, posi front diff!
Pampena Motrosports
1743 Julia Goldbach Ave.
Ronkonkoma, NY
Services 3S Getrag transaxles.
Auto Sports Unlimited
200 N. Franklin, Suite 100
Zeeland, MI 49464
Rebuilt Getrag transmissions
   and transfer cases
hardened output shafts
Autocraft Industries, formerly
Component Remanufacturing
  Specialists, Inc. (CRS)

Oklahoma City, OK
Autcraft no longer sells Getrag parts!
Mentor Mitsubishi
9090 Mentor Avenue
Mentor, OH
Willing to order Getrag parts
from Japan.
Shepherd Racing
2446 Manchester Rd. NW
North Lawrence, OH
Rebuilds 3S Getrag transaxles.
Supercar Engineering
Troy, MI 48083
ask for Philip Glazatov
Many parts available
Drivetrain Specialists
3852 Pioneer Ave.
Las Vegas, NV 89102
Some parts available.
Southern Gear
4369 West Atlanta Road
Smyrna, GA 30080
Some parts available.
Standard Transmission & Gear
1000 N.E. 29th
Fort Worth, TX 76106
Some parts available.
Transmission Depot
460 E Copans Rd.
Pompano Beach, FL 33064
ManTrans LLC
4920 Woodlane Circle
Tallahassee, FL 32303
Rebuilds 3S AWD and FWD
WARNING! Avoid the trany shops below
Based on reports from 3S owners, it is
strongly recommended that the
transmission shops below be avoided!

Standard Transmission (Kingsville, MD)
Transmission Mart (Winter Haven, FL)
MD Auto (Alpine, CA)
Gilarno's (Freedom, PA)
  Getrag parts might be available
from some Mitsubishi dealers in
Australia. Check there also for
Japan-only parts.

Let me know of specific dealers
that will work with us in the USA.


Some of the information presented here was gathered from various email lists, message boards, and vendor web sites. I would like to particularly thank Brian Woodrell, Rob Green , Brad Bedell , Neil , and Chris Umber for their contributions.

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Except for the small gif and jpg images, the content, images, photographs, text, and multimedia displayed are Copyright ©2000-2005 by Jeff Lucius and K2 Software. All rights reserved. No part, section, image, photo, article, or whole of this site may be reposted or redisplayed without permission of the author.
Page last updated August 26, 2005.