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Hooker BlackHeart

Hooker BlackHeart Transmission Crossmember

1964-1967 GM A-Body LS Swap Transmission Crossmember

Part # 71222008HKR Be the first to write a review
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Hooker BlackHeart has quickly become the leader in LS engine swaps and we are excited to announce new products for the 1964-67 GM A-Body. All Hooker engine swap components are designed to bolt right in for ease of installation, provide excellent ground clearance, and optimize driveline angles. The new 64-67 GM A-Body Transmission Crossmember is no exception.


  • Designed as an integral part of the complete Hooker 1964-67 A-body swap system
  • Designed for use with Hooker BlackHeart 71221008HKR or 71221009HKR 1964-67 A-body LS engine brackets to provide the most optimized U-joint working angles possible in this vehicle application
  • Works with Hooker headers and exhaust systems for this application to provide optimized component and ground clearance
  • High-strength/low-alloy steel construction- provides optimized balance of strength, stiffness weight and cost
  • Unique modular design- provides for direct installation of T56/T56 Magnum and 4L80/4L85 transmissions in any non-boxed frame 1964-67 A-body vehicle (i.e. El Camino and convertible models)
  • Additional add-on transmission adapters available to allow for installation of 4L60-4L70 (P/N 12657HKR) & TH400 or 2004R (P/N 12650HKR) transmissions
  • Black powder coat finish- provides attractive corrosion resistance characteristics

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.

Application1964-67 GM A-Body
Brand Hooker BlackHeart
Emission Code5
FinishBlack Powdercoated
Motor TypeGM LS
Product TypeCrossmember
T56 GM
T56 Magnum GM
Transmission TypeT56/T56 Magnum and 4L80/4L85
Type of ComponentCrossmember
Part Number71222008HKR

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Not compatible with El Camino or convertible models. Not compatible with Tremec TR6060 transmissions.

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

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