The drive shaft is such a crucial piece to the drive train, yet many builders seem to overlook maintaining it on older models. This drive shaft makes your rear end spin and if you have a weak link, rest assured your car will be going nowhere! Hydraulics further complicate things and if your car is over-locked, you can push your drive shaft into the rear end and transmission damaging either one or in some cases both. Winding up with one of these cases usually means that the owner has not taken steps to know how to order and purchase the proper drive shaft for their car.
In this month’s web exclusive, we called up Dynotech, who seem to have the easiest system set up to order a drive shaft. They showed us the form they offer builders to download and fill out, in the execution of buying the proper drive shaft. It was as simple as one, two, three. First we filled out the measuring form, second we called in our order, and third we waited for the mail to show up. When the parcel service showed up, our drive shaft was here, cut to order, balanced, and ready to be installed.
Now follow along as we order and install our Dynotech driveshaft for our 1970 Caprice project.

1. Our first step was to measure the distance from the tip of the transmission to the yoke on the differential.

2. The form that we downloaded off the Dynotech website tells you which measurements to take and with a few questions asked, will allow the Dynotech team to make you a drive shaft for your needs.

3. The splines and outer diameter of the transmission were measured in order to assure that they get you the right yoke for the drive shaft.

4. The differential yoke was measured so we knew what size u-joints needed to be mounted on the drive shaft.

5. After a couple days, the drive shaft will show up.

6. We got our new drive shaft ready for installation.

7. We removed the plug on the tail-end housing of the transmission.

8. The drive shaft yoke slipped right in.

9. Here is a look on how far the yoke should be away from the tail-end of the transmission.

10. After tightening the u-clips, the drive shaft was locked into place.

11. The drive shaft was in and ready to roll.