In past segments of our “Loose As A Goose” series, we looked at the real reasons why many cars get bent out of shape on the launch. Some, of course, become so twisted, they’re downright scary to drive (amusing for those in the stands, however). Unfortunately, scary to drive and quick elapsed times are almost always mutually exclusive.
Now, in those segments, we also showed a real solution to the dilemma, and that’s a drag race specific ARB (Anti Roll Bar). Here’s the inside info:
Heads up, small tire, stock mounting point suspension drag racing is incredibly popular. And that is precisely the sort of car that we’re discussing in the series. Making such a car hook isn’t easy. Keeping it straight is another matter entirely. And big power under the hood can complicate the situation. Sure something like a P275-tire equipped Monte Carlo SS is no Pro Stock car, but it sure does have plenty of roll rotation out back. We contacted TRZ Motorsports about the situation (the company manufactures such a bar that welds between the stock frame rails).
TRZ’s Anti-Roll-Bar (shown in the accompanying and previous photos) is a chrome-moly steel tube that pivots on bronze bushings captured within the end brackets. In turn, the ARB connects to the rear end by way of attaching levers and links fitted with rod ends. The actual ARB bolts to a tubular chrome moly cross brace that welds between the respective frame rails of the target car. When the car experiences straight up and down suspension travel (with zero chassis roll), the attaching levers move together. This typically happens as the chassis stabilizes down track. Here, the stabilizer bar simply rotates cleanly on the bushings and suspension movement is unaffected. When you get on the throttle at the launch, the chassis rolls (as pointed out in earlier segments). This causes the links to pull the attaching levers into different angles, which, in effect, twists the stabilizer bar. The ARB resists the twisting motion and chassis-rolling force is delivered directly into the rear end housing.
Still skeptical that something like this fixes the scary hook found on many of these cars? When you poll the pro’s (drag race chassis builders), you find virtually every high horsepower car to which they’ve added a rear stabilizer bar has shown lower 60-foot times and decidedly enhanced launch characteristics. Most will also tell you that all rear axles (stock or modified) can benefit from the installation of a simple performance type anti-sway or stabilizer bar. Aside from improving handling, the traditional Detroit-style of sway bar helps to spread and transmit the torque loads more equally. The end result is a rear suspension-rear axle assembly that isn’t bending, twisting or breaking. Instead, it maintains rigidity and honestly, a corner-carving component can actually help your car go quicker and faster down the straight and narrow. We’ll finish the install in the accompanying photos.
Sources – Loose As A Goose
2450 Smith St
Kissimmee, FL 34744
Jerry Bickel Race Cars
141 Raceway Park Drive
Moscow Mills, MO 63362