Hooker BlackHeart Transmission Crossmember

1970-81 2nd Gen GM F-Body LS Swap T56/T56 Magnum Transmission Crossmember, For use with DSE (Detroit Speed, Inc.) Subframe & Suspension

PART# 71222006HKR

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Hooker BlackHeart has quickly become the leader in LS engine swaps. Engineered with the latest CAD design software for structural integrity and a perfect fit, all Hooker BlackHeart crossmembers are made from high quality low-alloy steel then powder coated for lasting good looks.


  • Designed specifically for 1970-81 2ND Gen Camaro LS swaps using DSE (Detroit Speed, Inc.) Subframe & Suspension
  • Provides for installation of a 4th-gen T-56 or aftermarket T-56 Magnum transmission behind an LS engine in any 1970-1981 GM F-Body Camaro
  • Constructed of high-strength low alloy Powder Coated steel for strength and lasting good looks
  • CAD designed for optimum fitment, strength and ease of installation
  • Provide clearance for 3” exhaust when used with HOOKER Blackheart LT headers PN: 70101320-RHKR / PN: 70101321-RHKR and PN: 70501340-RHKR Exhaust System
  • All necessary hardware and floor backing plates included
  • Works with T-56/T-56 Magnum Transmission mounts


Application1970-1971 GM F-Body
BrandHooker BlackHeart
Emission Code5
Product TypeCrossmember
Part Number71222006HKR


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.

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