Hooker BlackHeart

Hooker BlackHeart Transmission Crossmember

1978-1988 GM A/G-Body LS swap 4L60//4L65/4L70/4L80/TH400/2004R/T56/T56 Magnum Transmission Crossmember

Part # 12644HKR-1 Be the first to write a review
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1978-1988 GM A/G-Body LS swap 4L60//4L65/4L70/4L80/TH400/2004R/T56/T56 Magnum Transmission Crossmember
Brand Hooker BlackHeart
Emission Code5
FinishBlack Powdercoated
Motor TypeGM LS
Product TypeCrossmember
T56 GM
T56 Magnum GM
Transmission Type4L60/4L65/4L70/4L80/TH400/2004R/T56/T56 Magnum
Type of ComponentCrossmember
Part Number12644HKR-1

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.

This part is fully interchangeable with part number 12644HKR. Integral component of the complete Hooker BlackHeart swap system for this application. Component features unique geometry that is not compatible for use with any other brand of engine mounting components. 4L60/4L65/4L70 transmissions require add on bracket P/N 12655HKR. 4L80 transmission require add-on bracket P/N 12656HKR For applications that were NOT originally equipped with a 200-4R transmission, crossmember adapter P/N 12647HKR is required. Crossmember fitment has not been validated for El Camino applications. *NOT COMPATIBLE WITH TREMEC TR6060 TRANSMISSIONS. TH350 Transmissions can reuse the factory transmission crossmember, but the slots in the center of the crossmember will need to be elongated in the forward direction.

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