Driveline & Transmission

This 23 tooth speedometer gear will recalibrate your cars speedometer when using a 3.55:1 ring/pinion set in the '89-95 manual transmission cars, or 4.10s in automatic transmission cars.

Complete new Traction-Lok (TL) assembly! This TL unit is designed to specifically fit the Independent Rear Suspension (IRS) cars such as the '89-97 Tbirds/Cougars, the '93-98 Mark VIIIs, and the 28-spline IRS Cobras. The TL units from a solid axle car are NOT compatible with the IRS applications.

Complete new upgraded Traction-Lok (TL) assembly with TWICE THE CLAMPING FORCE as our regular unit! This TL unit is designed to specifically fit the Independent Rear Suspension (IRS) cars such as the '89-97 Tbirds/Cougars, the '93-98 Mark VIIIs, and the 28-spline IRS Cobras. NOTE - The TL units from a solid axle car are NOT compatible with the IRS applications.

We highly recommend the 3.27:1 ratio for the '89-95 supercharged manual transmission cars. This is the ratio that Ford should have put in them from the factory instead of the 2.73:1 ratio.

The 3.55 ratio should be considered aggressive for the '89-95 supercharged manual transmission cars. If you do a lot of drag racing or rarely hit the highway with your car you may want to consider this ratio for this application.

The 3.73 ratio is in our opinion the best overall ratio for all the automatic transmission cars. It will be great on the street and highway and it offers terrific grunt off the line at the strip.

The 4.10 ratio should be considered an aggressive street/strip gear for the automatic transmission cars. If you do a lot of drag racing or are looking for terrific throttle response on the highway with your car you should consider this ratio.

Our 4R70W heavy duty rebuild kit includes everything you will need to perform a quality rebuild on your tranmission.