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How to Measure For A Custom Driveshaft

-For vehicles with Live Rear Axle:

 driveshaft measurement

Measure from the edge of the seal
(Not the output shaft)
to the centerline of the rear u-joint.

**Please do this at ride height.
The car can be lifted under the differential but make sure it has the weight on the rear springs**

To properly measure the rear end yoke, first determine if the yoke has (2) tabs that the rear joint will sit-in between, or if there are no tabs (tabs are in the picture above) or if it has a flat plate.

Be very careful with this measurement. The size changes in increments of 1/16" (1-1/16" | 1-1/8" | 1-3/16")


 For vehicles with a slide in transmission yoke and a flat flange on the differential:




Also measure the flange pattern as shown here:






For vehicles that use a flat flange on the transmission and a flat flange on the differential:




Please Provide the Following Information:

1. Transmission Year/Make/Model (please advise spline count if possible)

2. Differential Info: What did it come from? Does it have u-bolts or straps and (4) bolts, or does it have a flat plate (3-bolt / 4-bolt / 6-bolt)

3. What HP and torque does the engine currrently produce?

4. If the car is being built for competition please give us a full run down of the car, including weight,tire size and rear gear ratio. All of this will help get you the correct shaft.