- Transmission & Drivetrain
- Transmission Adapter Plates & Swap Kits
- Hooker Blackheart Transmission Crossmembers
Hooker Headers Blackheart LS Engine Swap Transmission Crossmember
520-71222021HKR

Items You Need
GM A-Body
Installation Notes:
This crossmember is not compatible with Tremec TR6060 Transmissions.
* Transmissions listed require adapter plates to fit.
Features:
- Specific geometry designed to fit the narrower, boxed frame rails of the A-body Convertible and El Camino models
- 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 1968-1972 Chevelle crossmember for easy retrofitting
- Black semi-gloss powder coating provides a durable and attractive finish
- Compatible with 1968-1972 A-body LS swap engine mounting brackets P/N’s 520-71221006 and 520-71221007 to provide optimized engine fitment and U-joint operating angles
Specifications:
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.