Hooker BlackHeart Transmission Crossmember - Black - GM Fullsize SUV / Truck 1973-87 COM21-671-4 3/4 in Smooth Bore to

3/4 in Smooth Bore to 3/4 in 20 Spline

The Skyjacker ® add-a-leafs are pre-drilled for the center pin

Requires adjustable secondary pump cam bracket to engage switch (QFT P/N 63-2)

Signature Series Valve Covers

Block mount GM LS gear reduction mini-starter works with 168-tooth flywheels and provides increased starting performance over OE style starters

Hooker BlackHeart Transmission Crossmember - Black - GM Fullsize SUV / Truck 1973-87 COM21-671-4 3/4 in Smooth Bore toThese new crossmembers have been redesigned and are less expensive than the previous crossmember & work with engine mounting brackets BHS540 for both the GM LS & Gen V LT engines. Choose the crossmember based on the transmissions that you want to run in your 1973 1987 C10: Crossmember BHS548 fits 4L60E, 4L65E, 4L70E, 4L75E, and 6L80 Transmissions Crossmember BHS549 fits 4L80E, and 4L85E Transmissions Crossmember BHS550 fits T56, and T56 Magnum