Review the sections below for important information on product instilation and helpful hints.            Before you jump into your transmission, get helpful insights and practical information designed to make your build a smooth one. 

GEAR RATIO CALCULATIONS

FOR A COMPLETE LIST OF SUBARU AWD MODELS, DOWNLOAD THE PDF FROM RALLISPEC HERE OR GET STARTED WITH YOUR CALCULATIONS.

Typical Gear ratios

 
 

Transmission

5MT Turbo

5MT non Turbo

6MT turbo

6MT non Turbo

6MT Tdi turbo diesel

4EAT TZ1A / TZ1B 4 speed automatic

1st / 2nd / 3rd / 4th / 5th / 6th

3.16 / 1.88 / 1.30 / 0.97 / 0.74

3.45 / 2.06 / 1.45 / 1.09 / 0.78

3.45 / 1.94 / 1.30 / 0.97 / 0/78  0.67

3.45 / 1.94 / 1.30 / 0.97 / 0.82 / 0.69

3.45 / 1.75 / 1.06 / 0.79 / 0.63 / 0.56

2.78 / 1.55 / 1.00 / 0.69

 

USE THE CALCULATOR TO MAKE YOUR LIFE EASIER.

GEAR RATIO RPM TO MPH CALCULATOR WITH AUTO SHIFT AND TRACER

CALCULATOR  STEPS

1) Enter gear ratios into the table below. Select 4 gears (VW), 5 gears or 6 gears to compare transmissions

2) Enter the tyre diameter in inches

3) Enter the Diff Ratio.

4) Finally, enter the RPM you would shift at. Click on shift and trace.

  SUBARUGEARS CASE MODIFICATIONS INFORMATION

DIY 5MT BUILD

SUBARUGEARS TRANSMISSION ASSEMBLY INSTRUCTIONS

CLICK HERE

2WD HIGH POWER PINION

 

!!!CHECKING YOUR AXLE   LENGTH IS REQUIERD  FOR ALL INSTALLATIONS PRIOR TO  OPERATION!!!

Axle length verification procedure:

Step #1: Put chalk inside the CV conversion flange when first assembled.

Step #2: Place vehicle on hoist, fit the CV’s and axles on to chassis.

Step #3: Place vehicle suspension at full droop (trailing arm at its lowest point) – and turn the CV and axle assembly.

Step #4: Place vehicle suspension with the axle’s level and turn the axle and CV assembly.

Step #5: place vehicle suspension at full bump (trailing arm at highest point) – turn the CV and axle assembly.

Step #6: Take the inner CV out and see if any of the chalk has been taken off by the rotating assembly.
Removal of chalk from the inner CV conversion flange during rotation of axle assembly is signs of contact and can cause premature failure of the transmission and/or transmission components. Adjustments must be made accordingly.

Signs of wear/damage to conversion flange will void the warranty!!!

axle info

IN-TUNNEL ACCESS KIT INSTALLATIONINSTRUCTIONS Hover over each picture for the instructions.