RenoHuskerDu Posted September 30, 2022 Share Posted September 30, 2022 Those who may remember my old posts will recall that I battled a low pedal and grabby rear brakes on our 85 F250 for fully a year. It was finally improved, not resolved, by replacing MC, the Bullnose-only proportioning valve, rear brakes entirely, including new drums. We also have an Aeronose in the family, and two Bricknoses that are daily drivers. All three have better brakes. Even today the Bullnose, despite recently adjusted rear brakes, has a low pedal and substandard feel. I resolved to myself last time that I would update the Bully to Bricky brakes before I'd fix them again. Replace everything between my right foot and the wheel cylinders/calipers. It just hit me today. I have two Aeronose 2wd F350s in the parts truck row. Both have given their motors to science, as it were. Some gave more, much more, see picture. But the brake systems are all there. One is DRW and the other SRW. I'm giving serious thought to bolting their brakes into our Bully. I know that Aeronose firewalls are somewhat different. Would I be able to bolt a 1994 brake MC onto a 1986 firewall? I know that pedal support brackets are different. The Aeronose went to a huge pot metal casting that supports everything from the pedals to column to foot brake. But if the MC fits, would the Bully brake rod thru the firewall push in the right spot to hit the MC? How about a 1994 SRW F350 front suspension? Could that bolt up to a 1986 frame? While I love the kingpin simplicity, its steering is not as precise as later designs. Going up to a 350 would give some overhead in strength. We could possibly use the F250 coil springs in there. As for the rear, afaik the SRW axle would bolt onto the leaf springs and give me a long pinion Sterling, which is a plus. The donor trucks are however 4.10 R&P so a regearing would be needed. And I might need a slightly shorter driveshaft. Link to comment Share on other sites More sharing options...
85lebaront2 Posted October 5, 2022 Share Posted October 5, 2022 Reno, booster bolt pattern is the same, I converted Darth to a 1990 Booster and 1993-97 MC, but went with the Aeronose dash. I have some pretty good pictures of the changes needed, I also wanted to update the wiring which was part of the reason for the Aeronose dash. I upgraded my rear brakes from the original 12 X 2.5 to 12 X 3.5 and did away with the old proportioning valve/failure warning switch. I do not have the RWAL system so just spliced the lines together. Link to comment Share on other sites More sharing options...
RenoHuskerDu Posted October 13, 2022 Author Share Posted October 13, 2022 Reno, booster bolt pattern is the same, I converted Darth to a 1990 Booster and 1993-97 MC, but went with the Aeronose dash. I have some pretty good pictures of the changes needed, I also wanted to update the wiring which was part of the reason for the Aeronose dash. I upgraded my rear brakes from the original 12 X 2.5 to 12 X 3.5 and did away with the old proportioning valve/failure warning switch. I do not have the RWAL system so just spliced the lines together. Howdy, Are those pics out here? I'd love to see. I just picked up a 3rd Aeronose 2wd 350, mostly for the long-pinion Sterling, a spare 7.3 PSD with rebuild kit, and a very clean quad cab with two seat trays and decent seats. It still has all its brake bits on it. Link to comment Share on other sites More sharing options...
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