highboy drum to disk conversion
Cargo Master
Joined: Jul 2010
Posts: 2,099
Likes: 8
From: York, Pa
I wouldnt waste the money on that axle. I would at least find a open knuckle lp d44 w/ disc thats complete. Then all you need is the booster and the proprtioning valve. You at least get to do away with the leaky knuckles.
Post Fiend
Joined: Apr 2008
Posts: 8,261
Likes: 15
From: Big Sky Country
By "converting" i was assuming that he meant "swapping" in the above mentioned axle (or a 78/79 hp d44), but you never know...
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Tuned
Joined: Apr 2002
Posts: 328
Likes: 93
Yes, that's what I did. Bought a 1979 Dana 44 with disc brakes. I also bought the power steering box and pump. The brakes are really bad (spongy) even after proper bleeding. Has anyone tried one of the adjustable prop. valves?
Cargo Master
Joined: Jul 2010
Posts: 2,099
Likes: 8
From: York, Pa
Oops I misread op was asking. I'm steering him in the wrong direction with a lp44. A 78/79 Hp 44 with the power steering would be a great swap if that's what he wants. I skipped that step and went right to the D60 and power steering swap that I'm still working on.
Post Fiend
Joined: Apr 2008
Posts: 8,261
Likes: 15
From: Big Sky Country
Did you use the prop valve from the donor truck?
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Tuned
Joined: Apr 2002
Posts: 328
Likes: 93
No, it still has the original 1974 prop valve from the 4 drum brake system. I did not buy a donor truck, only the parts so no access to a 79 prop valve. I noticed adjustable ones for sale in Summit and Jegs and wondered if they will work??? Maybe easier to find a used 79 from an F250?
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Post Fiend
Joined: Apr 2008
Posts: 8,261
Likes: 15
From: Big Sky Country
JBG sells this one for $59 Aftermarket Pro Valve
Elder User
Joined: May 2002
Posts: 927
Likes: 3
From: Lake Point, Utah
Just like montana_highboy said...it's basically a distribution block...i just went with a stock proportioning valve when I put a 76 Disc axle in my 73 Highboy...it works great...and was only 5 bucks at the u pull it yard...I didn't want to mess with having to get it all adjusted with an adjustable one anyway.
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