Bulletin: Guide to Measuring for Your Driveshaft

Welcome to our technical guide on measuring for custom-engineered driveshafts. Proper measurement ensures the perfect fit for your vehicle's transmission system. Below, we outline the steps you need to take and the information required to customize your driveshaft.

Identification Procedure:

Step 1: Identifying Your Transmission:

• The first step is to identify your transmission. Refer to the following specifications for Chrysler, Ford, General Motors, and Jeep transmissions:

• Chrysler – Dodge:
• 727 (30 Spline, 1 11/16" Seal Diameter)
• 904 (26 Spline, 1 9/16" Seal Diameter)

• Ford:
• C6-T56 (31 Spline, 1 11/16" Seal Diameter)
• AOD & C4 & T5 (28 Spline, 1 1/2" Seal Diameter)
• 4 R 7OW (28 Spline, 1.598" Seal Diameter)
• General Motors:
• T-350 700R4-4LLOE (27 Spline, 1 1/2" Seal Diameter)
• T-400-4L80E (32 Spline, 1 7/8" Seal Diameter)

• Jeep:
• Jeep Wrangler JK (2007-2011): NSG370 6-Speed Manual Transmission
• Jeep Wrangler JK (2012-2018): NSG370 6-Speed Manual Transmission, A580 5-Speed Automatic Transmission
• Jeep Wrangler JL (2018-present): NSG370 6-Speed Manual Transmission, 850RE 8-Speed Automatic Transmission, 8HP75 8-Speed Automatic Transmission (Jeep Wrangler Rubicon with the optional 2.0L turbocharged engine)
• Jeep Grand Cherokee WK2 (2011-present): W5A580 5-Speed Automatic Transmission, 8HP70 8-Speed Automatic Transmission, 8HP75 8-Speed Automatic Transmission (Jeep Grand Cherokee Trackhawk with the supercharged 6.2L V8 engine)
• Jeep Cherokee KL (2014-present): 948TE 9-Speed Automatic Transmission
• Jeep Renegade BU (2015-present): DDCT Dual Dry Clutch Transmission (Automatic), 948TE 9-Speed Automatic Transmission
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Step 2: Identifying Your Rear U-Joint:

Next, identify your rear U-Joint by measuring the cup diameter and length of the joint. Use digital calipers for accurate measurements. Refer to the following Universal Joint (U-Joint) series:

• 1310 Series:
• Cup Diameter: 1 1/16″
• Length: 3 7/32″
• Some Ford applications feature two cups with a diameter of 1 1/8". Suitable for horsepower ranges up to 500 in circle track or road racing, small tire drag racing, and 4x4 applications.

• 1330 Series:
• Cup Diameter: 1 1/16″
• Length: 3 5/8″
• Certain Ford applications may have two cups with a diameter of 1 1/8". Slightly stronger than the 1310 series and commonly used in 5.0 Mustangs.

• 1350 Series:
• Cup Diameter: 1 3/16″
• Length: 3 5/8″
• Manufactured with OEM tolerances and treated for durability. Recommended for various applications, including drag racing.

Step 3: Driveshaft Measurement

• The driveshaft measurement is crucial for the perfect fit. Measure Dimension "X" from the seal of the transmission to the face of the pinion yoke/flange. Ensure accurate measurements, as deviations as small as 1/16" can require adjustments.

Additional Notes:

• Additional Notes:
• Ensure accurate measurements as deviations as small as 1/16" can require a different joint.
• If you have any questions or concerns, feel free to reach out to us. We're here to ensure your vehicle's components fit perfectly and deliver optimal performance.