A friend bought one of the Proform bench top units that uses the hyd cylinder with the pressure gage on it. Brought it down to the shop and we checked it against a PAC calibration spring...... it was waaaay off.
It got sent back.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
