What’s My Transmission & Slip Yoke?

Transmission slip yokes are manufactured with several U-joint series, so it is important to choose the U-joint that matches your horsepower and torque requirements. Spline count, seal diameter and length will identify the slip yoke that is required for your transmission.

Below is a chart of the slip yokes that QA1 currently offers, with the dimensions and common transmissions associated with them. Please refer to the diagrams for reference on the dimensions.

Slip Yoke Reference Guide

Slip Yoke Drawings

QA1 Part # Vehicle Make Spline
(a)
Seal
(b)
Length
(c)
Barrel Length
(d)
Spline Type Material Common Transmissions
FOR USE WITH 1350 U-JOINT SERIES
9080-121 GM 27 1.499" 5.5" 3.5" Full Forged Chromoly - Hardened Powerglide (roller bearing)
9080-112 GM 27 1.503" 5.5" 3.8" Full Forged Chromoly Powerglide, TH350, 700-R4, T200
9080-113 GM 27 1.503" 6.9" 4.9" Counterbore Forged Chromoly 4L60, 700R4, TH350
9080-116 GM 32 1.886" 5.5" 3.6" Full Forged Chromoly TH400
9080-115 GM 32 1.886" 6.9" 5.5" Full Forged Chromoly TH400
9080-114 GM 32 1.886" 7.9" 6.5" Counterbore Forged Chromoly TH400
9080-120 GM 32 1.888" 5.5" 3.6" Counterbore Forged Chromoly - Hardened TH400 (roller bearing)
9080-125 Ford 28 1.499" 6.5" 5.0" Full Forged Chromoly C4, AOD, T5, T10
9080-118 Ford 28 1.598" 6.6" 4.9" Full Forged Chromoly 4R70W
9080-117 Ford 31 1.685" 6.4" 5.0" Full Forged Chromoly T56, FMX, C6
9080-122 Mopar 30 1.680" 6.1" 4.2" Counterbore Forged Chromoly  
FOR USE WITH 1310 U-JOINT SERIES
9080-127 GM 27 1.503" 5.5" 3.5" Full Forged Steel Powerglide, TH350
9080-126 GM 32 1.886" 5.5" 4.0" Full Forged Steel TH400
9080-128 Ford 28 1.499" 6.0" 4.4" Full Forged Steel C-4
9080-110 Ford 31 1.684" 7.0" 4.6" Full Ductile Cast Iron T56, FMX, C6

How to Determine Spline Count
When counting the number of splines on the output shaft, please note that some transmission yokes have missing splines, like the drawing above for A. If counting the yoke, add the missing spline(s) to get the correct count. If counting the transmission output shaft, it will always have the correct count and no splines will be missing.

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