Join Date: Nov 1999
Location: Central California, USA
Re: front disc drag
Yes you need the short pushrod. The pedal pad height should be 4" to 4 3/4" from the floor, this is lower than the clutch pedal height.
The rod from the pedal should have a little free play, and the booser should control pedal height, not a rubber stop or brake light switch. The rod connects to the lower hole in the brake pedal and a spacer tab is bolted to the upper hole that contacts the brake light switch. Don't set the switch so it bottoms out and prevents full pedal return.
If the RF caliper only releases fully when you open the bleeder, there is pressure trapped somewhere in the line. Either a bad hose or line, or some restriction at the proportioning or distritubition block. You might find it by cracking open the line farther up the same way you did the bleeder and if you get beyond the problem area, breaking loose the line won't make a difference.
If cracking the RF bleeder doesn't help release the LF caliper, then the problem is below the point where the lines split RF/LF.
Also check the outboard pad for pressure against the rotor. If the caliper bracket is positioned too far inboard relative to the rotor, the caliper can't move more outboard to release the pad. You would have to shim the caliper bracket outboard to correct this. Also check the caliper anchor bolts and sleeves for binding. The caliper should have O rings inboard and outboard to guide it, these are lubed with silicone grease.
Check my web page for First Gen Camaro suspension info:
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67 RS 327 original owner. 1965 Lola T-70