Hooker BlackHeart Transmission Crossmember

1968-1972 GM A-Body LS Swap Transmission Crossmember

Part # 71222007HKR Be the first to write a review
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Vehicle emissions regulations are not applicable to this item.

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At the heart of any performance vehicle is the exhaust system. Hooker with its classic heart logo has been at the core of the exhaust industry for decades. Many of the most powerful vehicles on the planet have used Hooker Headers. Hooker continues to push the boundaries of performance with the new Blackheart line of performance exhaust systems for popular late model vehicles. The Blackheart line is truly a platform designed full exhaust program. From the cylinder head flange to the tailpipe, the Blackheart line is engineered to provide maximum exhaust velocity, ground clearance, style, performance, and quality! When it's time to tear the heart out of the competition - choose BlackHeart!


  • High strength-low alloy steel construction provides for a strong transmission mounting solution*
  • CAD designed to provide optimized installation, fitment, component clearances and exhaust system ground clearance
  • Provides for direct installation of 4th-gen F-body T56, aftermarket T56 Magnum or 4L80/4L85 transmissions
  • Provides for installation of 4L60/4L70, TH400 or 2004R transmissions through the use of available adapter kits
  • Shares the same exhaust arch location as the stock 1968-72 Chevelle crossmember for easy retrofitting
  • Black semi-gloss powder coating provides a durable and attractive finish

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.

Application1968-1972 GM A-Body
Bracket MaterialSteel
Brand Hooker BlackHeart
Emission Code6
EngineGM Small Block Gen III/IV/V (LS/LT Based)
FinishBlack Powdercoated
Motor TypeGM LS
Product TypeTransmission Crossmember
T56 GM
T56 Magnum GM
Type of ComponentCrossmember
Part Number71222007HKR

Vehicle emissions regulations are not applicable to this item.
* Does not fit convertible or El Camino models NOT COMPATIBLE WITH TREMEC TR6060 TRANSMISSIONS.

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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.