Hooker BlackHeart Transmission Crossmember

1963-1972 GM C10 trucks LS/LT Swap, T56 Transmission Crossmember

Part # 71222024HKR Be the first to write a review
Estimated Ship Date: 07/31/2023
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Vehicle emissions regulations are not applicable to this item.

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This BlackHeart LS/LT engine swap transmission crossmember is for 1963-1972 GM C10 trucks. It is designed specifically for use with Hooker Blackheart engine swap brackets and exhaust components to simplify your LS/LT swap. Provides bolt-in installation of T56 Transmission and up to 3" exhaust without hanging below frame rails.


  • Designed for use with all Hooker Blackheart 63-72 C10 LS/LT swap parts
  • Easy to install, bolt in Crossmember for use with GM T56 transmissions
  • Designed using CAD modeling/FEA analysis for optimal fitment, strength, weight, safety and appearance
  • Welded steel construction
  • Provides an optimum engine/transmission inclination angle (when used with # BHS511 engine mounts) that is critical to obtaining suitable U-joint working angles
  • Designed in conjunction with other Hooker Blackheart C10 engine swap parts to provide bolt-in installation of Hooker LS and LT swap manifolds, headers and exhaust systems for this application
  • Provides the highest clearance available for up to 3" exhaust system routing

About Hooker BlackHeart

The BlackHeart team utilizes the latest technology and materials to design exhaust systems, engine swap kits, and mufflers for both import and domestic cars and trucks. Hooker BlackHeart is platform-engineered to provide superb performance, aesthetics, and fitment.

Application1967-1972 GM C10 Trucks LS Swap
Brand Hooker BlackHeart
Emission Code6
Product TypeTransmission Crossmember
TransmissionT56 GM
T56 Magnum GM
Transmission TypeT56
Part Number71222024HKR

Vehicle emissions regulations are not applicable to this item.

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    *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.