UMI Performance 70-81 GM F-Body Upper A-arms Front Adjustable Tall ball joints

When you're looking to dial in your classic GM F-body or B-body's suspension, UMI Performance's adjustable upper A-arms are a solid choice. What you get in this package are a pair of robust tubular upper control arms, each fitted with a tall ball joint and a single adjustable rod end. These arms are designed to bolt directly onto your 1970-1981 GM F-body or 1978-1996 GM B-body vehicles, like the Chevrolet Camaro, Pontiac Firebird, or Buick LeSabre, giving you a significant upgrade in handling and steering response.

These aren't just about looking good, though they do come in a striking UMI red or sleek gloss black powder coat. The real magic is in the adjustability and the tall ball joint design. The single adjustable rod end lets you fine-tune your caster and camber settings without needing a stack of shims, which is a huge time saver during alignment. That tall ball joint is specifically designed to improve camber gain during cornering, giving you more tire contact and better grip when you're pushing the car. Plus, they're built shorter than stock to help with alignment settings, especially when you're aiming for aggressive performance alignments. The construction is serious business too, using 1.250-inch DOM steel tubing and a 4140 CrMo cross shaft for strength that can handle track abuse or spirited street driving.

Adding these to your car can bring about 5 to 6 degrees of positive caster, which really helps with steering feel and keeps the car tracking straight on the highway. If you're serious about performance, combining these with UMI's lower A-arms can get you an impressive 8 to 10 degrees of positive caster. These are built tough and designed for performance, making them a popular choice for Pro-Touring builds where stability and cornering are key, while still being perfectly street-worthy.