ok, so as a few of you already know, its way PAST time to update the brakes in my 59 Pontiac.
Here is my 2 options:
1) buy disc coversion brackets that bolt onto stock spindles, using 77 Bonneville wagon 12" rotors and 68-72 GTO calipers, thusly forcing me to switch to 15" (or larger) 5x4-3/4" front wheels, (stock is 14" 5x5"), which would in turn force me to run 15" 5x5" rear wheels, and buy tires for these new wheels, (which I need new tires anyways, i guess).
the conversion brackets alone are $165, then I would be looking at off the shelf parts prices for rotors, calipers, pads, hoses, bearings etc. probably be around $300-400, not including new wheels/tires/booster/master cylinder. but this would also convert me to roller bearings instead of ball bearings ($265 to replace both sides on the front) so this option could potentially save me money down the road...
2) Rebuild my front drum brakes (rears were completely redone last year), icluding new booster and dual-chamber master cyl (single has screwed me twice now), wheel cylinders, hoses, etc.
Re-doing and retaining the front drums to me is plenty easy enough, but the only question I have is about plumbing the brakes after replacing the booster/master cylinder. was looking at getting a universal GM style setup, but speedway says its setup for disc/disc, or disc/drum. and they say that you need to use Residual pressure valves in each circuit (psi depending on what style of brakes) and to use an adjustable pressure valve in the rear circuit.
can I just use a stock-style GM proportioning valve right off the master cylinder, and then plumb the lines from there using the RPV's in both circuits, or can I forgo the RPV's since I am going drum/drum? this is where it gets tricky for me, as I really don't want to screw up my brakes... i know that My 70 pickup has a non-adjustable proportioning block right off of the master cylinder and then straight lines to front and rear, with no adjustments, to a drum/drum setup.
I guess if anyone has already done either of these types of setups, as I am sure some have, I just would like to hear some feedback of pros and cons of either way before I start ordering parts.
Thanks for all of your help!