If you're upgrading brakes on a Lemons budget (outside of actual Lemons budget, but beer and gas cost money too..), I'd start with finding a caliper that is readily available in junkyards that mounts to a rotor that will fit under the wheels you want to run. Obviously, the bigger the better here for rotor size. If it has a rotor that fits your lug pattern, extra bonus, but not required. Redrilling rotors is easy with a drill press and printed paper template.
Then go to Porterfield's website and confirm you can find some good race pads for them (HAWK DTC 30/40/50/etc or Raybestos ST43):
Once you've settled on a caliper/rotor, figure out how to bolt it on. Remember to keep the bleed port UP. There are lots of options to making a caliper work, anyone with some fab experience should be able to work something out.
Once they're bolted on, look at hydraulic ratios. Calculate what your stock setup is first for a baseline. Since I'm guessing you still have rear drums, we'll just concentrate on the fronts for now. You want to look at the master cylinder bore AREA with respect to the front caliper bore AREA. If its a single piston, one sided floating caliper, you just calculate the area of that single piston (or the area of 2 pistons if its a 2 piston). If its a 2 or 4 piston solid mounted caliper where the piston forces are opposing one another, you actually only calculate HALF of the total piston area (a 4 piston brembo/wilwood caliper is calculated as the area of 2 of it's pistons).
After you have the factory ratio, you can get an idea of how to size your master cylinder for your new calipers. Generally I've found that when you're upgrading calipers, you're adding lots of caliper piston surface area and making your hydraulic ratio MUCH stronger. This can work out great if you had power brakes, just remove the vacuum booster and run non-boosted brakes like a REAL RACE CAR.
Petrosexual Racing - 4.9 HT swap/Trashback Miatahttps://forums.24hoursoflemons.com/view … p?id=35746
BFE GP '18 - 1st in C, High Plains Drifter -19 - 1st in B/Overall
Uh oh, Spaghettios...