Do Speed Parts Really Work Timing Tuning
H-O noted that with the new free-flowing induction the engine wanted its timing advance to come in earlier for more power. Thus, H-O installed a set of light-tension springs for the distributor advance weights to bring in the 28-degrees of centrifugal timing advance much sooner. (Note: Without premium fuel, this mod may cause detonation at low altitudes on a hot day.) Testing proved an e.t. improvement of more than 0.20 second.