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I have a D44 disc brake front end from a 76 swapping out the 69 drum, i got a dual diaphram booster and new master cylinder for a 76 from rockauto. i ordered a disc/drum proporting valve from jegs. Question is what order to mount. MC to prop valve to stock distribution block to brakes? or MC to stock dist block to prop valve to brake? or do away with stock block? i know some MC have prop valve mounted to them, but just watched a youtube vid were he put prop valve after the stock block on a mustang conversion? Thanks
I have a D44 disc brake front end from a 76 swapping out the 69 drum, i got a dual diaphram booster and new master cylinder for a 76 from rockauto. i ordered a disc/drum proporting valve from jegs. Question is what order to mount. MC to prop valve to stock distribution block to brakes? or MC to stock dist block to prop valve to brake? or do away with stock block? i know some MC have prop valve mounted to them, but just watched a youtube vid were he put prop valve after the stock block on a mustang conversion? Thanks
you will need the disc / drum prop valve and seems the numbers are a 2 and a 12 or something near.
I would have to do some research to be accurate. I do think you should eliminate the drum / drum prop valve for the new one.
Keep us posted !
I got a disc/drum prop valve to replace the stock dist block. the brake warning plug on top is different? the plug that came with the new is single wire and the old is two wires? Wondering if its needed? or how you would splice?
Thanks, just looking on jeffs bronco, they have a ford prop valve with one wire and it says: For dual wire brakes switch, wire both wires to the single new pigtail.
I got front end, lift, booster/mc, prop valve installed. Prob i had was pinion angle was way off, so i added 4 degree shims now pinion angle is good but caster is at -2 degrees
Caster angle should be between 4°-6° positive for more stable highway speeds & this also helps the steering to automatically return to center when exiting a turn. The low pinion axle doesn't play well with a suspension lift. I'd try a 2° shim or no shims & lower the transfer case with 1" spacers. This will help both front & rear driveline angles. A '69 highboy should have the divorced Dana24 T.C. if these are mounted to the crossmember like the later NP205, there's eight 3/8" bolts that secure the T.C. to the crossmember, that is where the spacers will go. To be clear, 1" may or may not be enough to get proper angles, some experimental research will be needed. Personally I wouldn't drop it more than 1.5". Years ago my highboy was setup with a Dana 60 high pinion front with 6" suspension lift (no shims) & my 205 was dropped 1.25", the front driveline angle was perfect.
Caster angle should be between 4°-6° positive for more stable highway speeds & this also helps the steering to automatically return to center when exiting a turn. The low pinion axle doesn't play well with a suspension lift. I'd try a 2° shim or no shims & lower the transfer case with 1" spacers. This will help both front & rear driveline angles. A '69 highboy should have the divorced Dana24 T.C. if these are mounted to the crossmember like the later NP205, there's eight 3/8" bolts that secure the T.C. to the crossmember, that is where the spacers will go. To be clear, 1" may or may not be enough to get proper angles, some experimental research will be needed. Personally I wouldn't drop it more than 1.5". Years ago my highboy was setup with a Dana 60 high pinion front with 6" suspension lift (no shims) & my 205 was dropped 1.25", the front driveline angle was perfect.
Thanks, i didnt even think about the caster when i put the shims in
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