Well 5psi launch is not enough to get a good 60ft. Do you brakes (softer bigger shoes in the rear and the S-10 wheel cylinders) you should be able to hold between 8-12lbs of boost at the line.
Originally posted by lordmikef im running the original brakes they're in good condition and hold the car stiff at about 5 never was able to go any higher without the wheels spinning