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Hooker BlackHeart Transmission Crossmember

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

PART# 71222024HKR

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$252.00   Suggested Retail
$203.36   Holleydays Price
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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


Application1967-1972 GM C10 Trucks LS Swap
BrandHooker BlackHeart
Emission Code6
Product TypeCrossmember
TransmissionT56 GM
T56 Magnum GM
Transmission TypeT56
Part Number71222024HKR



Vehicle emissions regulations are not applicable to this item.

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         X  Holleydays 2020 20% off and DD
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