`64-`67 A body (Chevelle, GTO, 442, GS, etc.)
Currectrac double adjustable upper arms.
The converging 4 link rear suspension on many GM cars and all Fox body Mustangs have a problem. Their geometry requires the arms to flex to avoid binding up the suspension but this same flex can also lead to wheel hop and poor handling. Until now you had two choices, Use the flexible stock arms or use beefy steel arms with hard bushings that helped the wheel hop but caused the suspension to bind in torsion causing erratic handling. Some attempts have been made to fix this problem with heim ends or steel bearings but they can transmit a lot of road noise to the body and are open to water and road grit so they wear much faster than stock components. Now there's no more need to compromise!
New Currectrac arms feature modular Johnny joints on the frame side to eliminate non linear binding issues. These joints allow a full 30 degrees of flex with no binding and are enclosed against dirt and weather for long life. They have polymer races for noise/vibration isolation, grease fittings and are so durable they are a favorite of the hardcore off-road crowd! All lower arms are direct fit, feature mounts for a factory type sway bar if required and are protected by a beautiful black anodizing (on the billet lower arms), or a glossy black powder coat finish. The uppers arms are fully adjustable to set pinion angle, and have beautiful black anodized adjuster sleeves. Also, they are among the beefiest adjustable arms on the planet!
Currectrac® adjustable length upper control arms for use on all 1964-1967 GM A-body cars. Units feature adjustability without having to have either end removed from the vehicle via a "turnbuckle" style design featuring RH/LH threads in the center and double jam nuts. The center of the arm is hex shaped aluminum and is polished and now finally comes in black anodized. Housing end of the arm features a "fork" for mounting the arm to the housing, and the housing end of the arm features Currie's Johnny Joint® urethane bushed rod end that allows for 30 degrees of overall travel. This joint is fully greasable and rebuildable.