As I prepare for the swap this winter, I seem to remember reading a long time ago that you have to change the clevis location on the brake pedal when changing from manual to power brakes.
Is this correct?
I cannot remember if it is currently in the lower hole for manual, and has to go to the upper for power, or vice versa?
On a classic GM pedal with two pushrod holes, the top hole is for manual brakes; the bottom is for power (which needs less ratio). The booster/master cylinder mounts at a steep up-angle to properly align with the pushrod. Pedal advantage is determined by dividing A (the pedal pivot to the pedal-pad center push-point) by B (the distance from the pivot to the pushrod hole).
Marlan Davis
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