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Denny's Driveshaft builds custom steel and aluminum driveshafts for your high performance car, street rod, race car, van, pick up or 4x4 truck
 

SLIP YOKE - 32 spline T-400, 4L80, 4L85, 6L80 Light TRUCK Transmission Slip yoke

Comes in 1310, 1350 and GM 3R series

  • Specifically designed to replace the factory bolt on yoke for T-400, 4L80, 4L85, 6L80 Truck Transmissions with the Threaded Hole in the center of the Output shaft.
  • DOES NOT FIT.... T400/475 with the emergency brake and or roller bearing in the tailshaft housing as found in the RV Motor Home Transmission and Medium Truck Transmissions
    >>>> Please consult a transmission rebuilder to see what is required to convert it to a normal light truck tailshaft and tailshaft housing.

  • Replaces the light truck style bolt on yoke with a normal car style slip yoke which will allow for proper slip travel and bushing contact for best performance. A must have when using any T-400, 4L80, 4L85 or 6L80 truck transmission with the threaded hole in the output shaft.

With this counterbored slip yoke you can now use a normal car style driveshaft.

This slip yoke will slide all the way into the transmission. 

  • We strongly suggest that you remove the O-Ring on the output shaft because with this slip yoke it is no longer necessary. 
  • Removing the O-Ring will to allow the lubrication to get to the splines...and this is very important.

To determine correct driveshaft center to center length for this slip yoke

  • Push the slip yoke all the way into transmission and pull it out 3/4 inch minimum to 1 inch maximum. Now measure from center of u-joint hole in slip yoke to the center of the u-joint at the rear end yoke.  This dimension will be the correct center to center required for your driveshaft to fit correctly using this slip yoke.

We designed this yoke to solve this problem over 30 years ago when T400 Truck Transmissions first started to be used in cars


 

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