To all Superformance owners and dealers. Superformance in conjunction with Wilwood brakes has recently conducted testing on the new rear brake system for the Mark III. The base car used was a mark III with 17 inch wheels and A Roush 427SR engine. The base car utilized the 34mm rear caliper with the front Dynalite caliper equipped with I pads. In the test we found the engine produced 9.75 inches of vacuum at idle, and the split master cylinder produced to all 4 wheels 800psi of line pressure to all four calipers. We found the test car to have blued rear rotors and the front rotors not yet Seated. We ran the car and bedded the brakes according to the procedure and found the car stop adequately under both normal and heavy driving conditions. We then brought the car back and exchanged the front pads with the BP-10 style pad, same one used on the GT 40 and re-bed the brakes and conducted the test again. We found the car achieved the desired modulation a front to rear bias, especially noticeable under heavy braking, and proceeded to test the parking brake. According to federal regulations FMVSS 571.105, the vehicle with the parking brake properly applied the brakes bedded held a 30% Grade for 5 minutes in both directions. Wilwood then installed the 41mm rear caliper, bled all brakes again and then ran all the test again. Both Superformance and Wilwood found that although the car design was front brake bias, the 41mm caliper changed the stopping characteristics of the vehicle giving the car a less aggressive deceleration. Wilwood does offer upgrade performance brake applications for track use, consult your local installer for applications and availability.
Superformance and Wilwood brakes found no fault in the 34mm design of the brake system currently used as long as the following criteria is met.
1 Inspect engine vacuum, minimum booster requirements 10 inch vacuum at idle
2 Clean rotors with either solvent or Brake Cleaner
3 Bleed brake system
4 Bed Brakes according to procedure
Superformance will upgrade the brake pads and rear calipers free of charge to the customer if the customer request as long as the original parts are returned in the factory boxes. We ask the customers to provide Superformance with there name, address, and vehicle number, for identification. We ask the dealers, or installers to return the new calipers and pads from the cars as soon as the new ones are received. Please contact Barry at Superformance via email.
barry@superformance.com if you have any questions.
Barry Bloch
General Manager - Superformance, LLC.
dba Shelby Distribution USA