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Hey everyone,
Trying to dig up some info. I'm converting from the vacuum booster to a hydratech hydroboost unit....the real Purdy show finished one, all machined smooth casting, painted/cleared/baked, polished plate and accumulator, re-clocked, the works
Anyway, along with that, I'm redoing the brake lines from factory spaghetti mess to polished stainless steel 3AN brake tubing. Trying to figure out all the thread types/sizes to convert directly from the master cylinder from inverted flare (IF) to -3AN.
From what I was able to measure, here's what I've got. If there's any corrections, please post up...
Cruise control switch port (on MC): 3/8-24 IF
Forward brake line port (on MC): 9/16-18 IF
Rearward brake line port (on adaptor): 7/16-24 IF
Rearward brake port adaptor (on MC): M18-1.5 O-ring
So the first three are easy, I can get those size adaptors to go from x/y/z IF to 3AN. The last one is the tricky part. That rear port adaptor is an odd fitting. From what I've read here (http://www.ford-trucks.com/forums/1376447-mystery-fitting-on-2001-f150-v6-brake-master-cylinder.html) that rear brass fitting is just an adaptor for ABS trucks, and a proportioning valve on non-ABS trucks. Well I've deleted ABS long ago, so is there any other adaptor I can buy that can convert right from M18-1.5 O-ring to 3AN and eliminate that brass chunk? Or does anyone know the ford PN for the proportioning valve that would get installed there?
Trying to dig up some info. I'm converting from the vacuum booster to a hydratech hydroboost unit....the real Purdy show finished one, all machined smooth casting, painted/cleared/baked, polished plate and accumulator, re-clocked, the works

Anyway, along with that, I'm redoing the brake lines from factory spaghetti mess to polished stainless steel 3AN brake tubing. Trying to figure out all the thread types/sizes to convert directly from the master cylinder from inverted flare (IF) to -3AN.
From what I was able to measure, here's what I've got. If there's any corrections, please post up...
Cruise control switch port (on MC): 3/8-24 IF
Forward brake line port (on MC): 9/16-18 IF
Rearward brake line port (on adaptor): 7/16-24 IF
Rearward brake port adaptor (on MC): M18-1.5 O-ring
So the first three are easy, I can get those size adaptors to go from x/y/z IF to 3AN. The last one is the tricky part. That rear port adaptor is an odd fitting. From what I've read here (http://www.ford-trucks.com/forums/1376447-mystery-fitting-on-2001-f150-v6-brake-master-cylinder.html) that rear brass fitting is just an adaptor for ABS trucks, and a proportioning valve on non-ABS trucks. Well I've deleted ABS long ago, so is there any other adaptor I can buy that can convert right from M18-1.5 O-ring to 3AN and eliminate that brass chunk? Or does anyone know the ford PN for the proportioning valve that would get installed there?