- Spline count on the transmission output shaft
- Outside Diameter of the transmission output shaft
- Length of the transmission output shaft past the end of the housing (tail shaft length)
- Transmission tailshaft seal size
- Ear to Ear length of the rear pinion yoke
- Inside or Outside Snap ring required
- Center of forward U-joint to Center of rear U-joint length
I am typically very precise with my measurements and I like things to fit very well. I used a tape measure and a dial caliper to obtain the following measurements.
- spline count of tail shaft = 27
- no key way on spline of tail shaft
- total length of tail shaft = 5.234 inch
- length of tail shaft exposed past seal = 0.61 inch
- seal size = 1.455 inch (number stamped on seal P.I. 8850A)
- tail shaft O.D. 1.171 inch
- yoke ear to ear length – inside to inside =3.625 inch
- yoke ear to ear length – outside to outside = 3.888 inch
- Center to Center u-joint length = 50.375 inch (50 3/8)
- Transmission tail shaft aft edge to center of Moser 9″ yoke = 52.75 inch (52 3/4)
- yoke u-joint cap size 1.19 inch
These measurements were taken with weight on wheels, meaning the car was not in the air on a lift. My experience with Certified Power Inc. and Ryan was a very good one – thus the reason for this article. I sent the measurements on a Monday night at 10pm via email. When I stopped by the facility the next day after work, the drive shaft was made, painted, and ready to go! That’s pretty good service in my book. I did find a lateral scratch on the sealing surface of the transmission input yoke, but again excellent service prevailed. The yoke was replaced with no hassle and very quickly. I highly recommend these guys if you live in the St. Louis area.
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