1964-66 Mustang Street or Drag Tubular Upper Control Arms featuring 3 degree positive caster MST-463 (Sold as a Pair)

Alignment help along with performance. Global West has engineered an upper control arm for 1964, 1965, and 1966 Mustangs. This control arm is used for street and drag race applications. The arms are a direct replacement for the factory mainly because the length, ball joint angle, and location where the arm bolts on in the shock tower is stock. Because of standard dimensions the arm is best suited for drag racing or street. It is not a handling application. The MNR-463 is designed for that application. Both control arms provide additional positive caster by moving the ball joint back towards the rear of the car.

Note: Cars back in the 60`s did not utilize much caster. Caster plays an important part of the drive ability of the car.

Caster achieves the following: Provides straight line stability, has a self centering action on the front suspension, improves initial turn in during cornering and also resists pulling (right hand drift) caused by road crown. Prior to the Global West Plus 3 control arm, caster was increased by one of two ways: First by shimming either by installing or removing shims between the shock tower and the upper control arm shaft. Shims on the front bolt in the upper control arm add caster and camber. Shims removed from the upper control arm rear bolt, also increases caster and reduces camber. In many cases it is hard to get enough caster and still have adequate camber.

Second: Using the strut rod to get caster, unfortunately the strut rod on 1964-66 Mustangs is non adjustable. Global West does offer adjustable strut rods, part # ASR-4, that allows caster to be adjusted simply by turning the hex adjuster. The hex adjuster will shorten or lengthen the rod thereby setting caster.

Strut rods are a great choice for getting caster however the suspension is still somewhat limited. Here is why, as the strut rod is shortened increasing caster, the tire is pulled forward closing the distance between the tire and the fender. Depending on the tire size, the tire could hit the front fender when the wheel is turned. The optimum choice is to use the Plus 3 upper control arm with the adjustable strut rod. This way you get optimum caster and no tire rubbing issues with the front lower fender lip.

Note: When using Plus 3 arms, there is now a right and left upper control arm. The original control arms (factory or first generation Global West Negative Roll control arms) are universal.

The new Plus 3 Mustang arms feature threaded upper ball joints that are available anywhere in the country. They are assembled with billet cross shafts, Del-a-lum bushings and additional hardware need for the spring saddle installation. The a-arms are black powder coated and the cross shafts are blue zinc (silver). Global West manufactures this product in its own facility here in San Bernardino CA. USA built!