Opentracker UCA vs. Global West UCA

It's all about camber curve - how much you want and how much your willing to pay for it?

The ORP street arm is just that, an arm for the street. It has the stock ball joint angle and works well with the standard upper arm mounting point or the 1" drop.

The ORP road racing UCA has the ball joint angle change built in for any about of drop up to 1 3/4".

The GW arm has the ball joint angle change built into it also but is tubular instead of a braced stock type arm.

The ORP and GW arm will both give you better performance than a stock arm mounted in the stock location.

We have a new arm out called an Autocross arm. It has the ball joint angle change built in with the bracing on the side rather than under the arm. They also have a gusset under the arm at the spring perch mounting point. Price wise they are in the middle of the range between the stock arm and the ORP road racing or GW arm. Here is a couple of pic's.

http://members.cox.net/opentracker/2004_0823autoxarms0006.JPG

http://members.cox.net/opentracker/2004_0823autoxarms0005.JPG

The difference between an arm mounted 1" lower than stock and an arm mounted 1 3/4" lower than stock will be felt on the track more than the street IMO. We ran our first three years of open track events with a 1" drop and bone stock UCA's and the car did well. The 1 3/4'' drop will give the car more grip becacuse of the better camber curve. The type of arm you use is the $$$ question. Vintage legal or tubular?

As I have said before, a driving school will do more for your lap times than any part you can buy. It will also make you a better driver on the street. Before you hit the track, take a driving school. You'll save time and money in the long run.

John