Been down this road so many times. Have personally converted nearly two dozen A-body's and '67-69 F-body's to factory disc brakes using '69 single piston calipers/ factory caliper brackets & factory disc spindles. Have also sold a ton of nice original disc spindles/caliper brackets/rebuilt calipers/hose brackets, & original prop valves to restorers as well as the local "smash em up" daily driver crowd.
Time after time, the front disc swap was because the customer wanted it, thought he "had to have it" on order to safely drive the car.In so many cases, agree with Nicholas, an upgraded drum system would have worked extremely well, and having gone both routes, the expense would have been considerably less than converting to a quality factory front disc set-up. In several cases, have actually removed converted front disc brake systems and put the car back to factory 4 wheel drum. One of my own keepers has received the conversion back to 4 wheel drum after receiving a truly Concours factory disc changeover (rebuilt correct dated calipers, replated correct dated part # caliper brackets, rebuilt correct casting master cYL, Gregori restored correct dates booster). Simply put, the highly detailed early '71 production factory disc setup added nothing stopping wise over a well prepped high matrix composition brake shoe drum setup. What did it add, about 50 lbs to the front of the T-37. With the Gregori restored booster, it also looked "real pretty" under the hood. There are many of us that are strong believers in the upgraded brake shoes and stiffer return springs offered by MusclecarBrakes.com (previous Praise Dyno Brakes). Link to earlier discussion:
A problem with the aftermarket '69 style single piston caliper front disc changeovers over the last 15+ years has been what I'll refer to as the "Race to the Bottom" as far price goes while sacrificing considerable QUALITY of component parts To put it in simple to understand words:
-$79 for a PAIR of repro disc spindles, what is one getting? Time and time again, the cheap Chinese disc spindles have proved to be JUNK. Originally poorly machined on the bolt holes for steering arms, then run after run of the wrong taper holes for the ball joint studs to go through. wow! So many examples of these junk disc spindles sheering off ballpoint studs. There is no way that kind of offshore cheap [email protected]
is going on any vehicle that I'm working on, or any vehicle that any of my friends vehicles who have been asking my input/parts.
-Poorly die stamped caliper brackets that have to be tweaked and ground on to fit = more poor quality JUNK.
-8" diam aftermarket boosters that don't have the vac capacity to work... more Junk!
Newsflash! If purchasing a front "disc brake conversion" complete with cheap disc spindles from one of the big internet sellers on price alone, the above parts are what you are getting. There are better parts out there, got to have a factory style front disc set-up, there are better ways to go w/o compromising integrity of some very important suspension pieces.