I always have to post quickly at work. The man is always looking over my shoulder
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Dean what you have shown us looks killer for sure! I don't care if your car is primered or not put it in the garage here so we can always check it out!
About your rear brakes keeping up with the four piston Wilwood calipers maybe this might help. Piston area (square inches) formula is - Pi times radius squared. Radius of a circle is half its diameter. If all the pistons are on one side of the caliper figure the piston area for each and then add them for the total area. If there are equal pistons on either side of the caliper then figure the piston area for one side only. All this was in the "Whats your problem?" in the Dec. 07 issue of Car Craft so I'm just Regurgitating that info
Here is what I figured for mine.
1991 S10 front caliper piston is 2.5". 1995 to 2001 Ford Explorer rear caliper piston is 46mm (mm x .039370078 = inches) or 1.81". You have to find the piston area for both.
S10 1.25 x 1.25 x 3.1417 = 4.91 piston area.
Explorer .905 x .905 x 3.1417 = 2.57 piston area.
Front caliper piston area is 48% larger than the rear.
I don't know for sure but maybe the later Explorer rear calipers have larger or multiple pistons. CC said a Camaro had the Explorer rear disc's on it yet even with a prop valve the rear would lock up first during aggressive braking. I guess all prop valves are made to let a minimum amount of pressure to the rear brakes. Even with it backed out all the way the rears would still lock up first because of the rear caliper piston area being so much bigger than the front (thats why I say maybe later Explorer rear brakes might have bigger pistons, I can't see front disc brakes on a Camaro being smaller than a S10 front brake). Anyway after all that you can at least figure your front piston area and then figure out a correct size for the rear. Who knows maybe a late Explorer rear caliper might be the ticket. One things for sure you are going to stop before the dime
. Even your roll bar is going to help with braking (letting the rear do more).
My red Hawk is a lot like yours but far from done. At least this Spring I have some money to do my brakes and fuel system. I'm also planning on the Spohn adjustable rear lca's when the come out. Sorry for the long post, Brian