Info
Core Shifters Service Bulletins
Hurst references:
- Hurst stick catalog - all available sticks are listed here
- Hurst full catalog - 2004 (most complete - newer catalogs drop discontinued kits)
- Hurst cross reference chart (Core Shifters' equivalents)
- Hurst T-handle original press release from 1966
Related vendors:
- For old 4 speed shifters visit David's 4 speeds or contact Scotty Brokaw
- For 4 & 5 speed (T5) transmission service, contact Ed Hartnett
- For Tremec 6 speeds & custom T56 / TR6060 service, contact Hanlon Motorsports
Transmission references:
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Tremec 5 speed:
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Tremec 6 speed:
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Truck: |
- If you want to see the pitfalls of a trans swap - read the "Hot Rod to the Rescue" article in Hot Rod Magazine issue April 2017 pg 88. The most important points are here-
- Driveshaft tips to avoid vibrations:
- Trans & rear axle yoke centerlines should be parallel to each other within 0.5 deg
- This is hard to do w/ 6 speed in old car without cutting floor or rotating rear axle housing
- Angle between either yoke and driveshaft should be 0.5-3.0 deg for conventional U-joints
- For angles > 4 deg, use a CV joint at front (see The Driveshaft Shop)
- Checkout the Tremec Toolbox App to measure driveline angles w/ your smartphone
- For hydraulic release bearings - checkout Speedway Motors' setup tool to set proper travel range