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'73 F-250 Axle Pivot Bushings

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Old 02-12-2018, 06:17 PM
surfcraft
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'73 F-250 Axle Pivot Bushings

I'm trying to get parts together that I'll need to swap front I-beams (and engines, actually) between a great running but rusty '73 F250 and a clean and straight '68 F250. Both front ends would be in need of new bushings.

The '72 has original drum brakes, so I'm considering swapping in the '73's front suspension with discs.

The parts catalogs that I've been looking at seem to show that the same bushings are used in both, except HD.

The '73's I.D. tag lists a GVW of 8100lbs. Does anyone know if that's the HD?

If so, it seems like my bushing choices may be limited to rubber, which would be fine but my experience with new rubber parts is that they don't hold up nearly as well as the old stuff.

Has anyone re-bushed HD I-beams and who were your sources?

Many thanks,

JW
 
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Old 02-13-2018, 01:38 PM
surfcraft
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Sorry I used the term "control arm" rather than "radius arm" in my original post.,

NPD lists a separate number for '73 HD radius arm bushings but not the axle bushings. They seem to be selling MOOG parts which might be the blue thermoplastic.

LMC lists a separate number for '73 poly axle pivot bushings but not the poly radius arm bushings

Dennis Carpenter doesn't differentiate at all, but I think they're selling rubber.

It seems to be only Poly bushings where I find any difference noted, but I can't make sense of those.

Could it be that the bushing sizes are the same, but the poly are not rated for use in the HD axle pivots?

Thanks,

JW
 
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Old 02-13-2018, 02:05 PM
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Energy Suspension will be able to help you out .
 
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Old 02-13-2018, 03:25 PM
surfcraft
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Thanks, POPAJON---

Energy shows same parts for all, (4.7107 for the rad.arm and 4.3124 for the pivots) as does Rockauto for the Energy parts.

Same energy parts through Amazon: Amazon's fitment check gives the thumbs-up for the radius arm bushings, but thumbs-down for the pivots.

Are some sellers just more knowledgeable, or could this be a case of all the sellers repeating bad second or third or?...party info?

Hoping for the best hasn't always payed off for me...
 
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Old 02-13-2018, 05:01 PM
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Originally Posted by surfcraft View Post
I'm trying to get parts together that I'll need to swap front I-beams (and engines, actually) between a great running but rusty '73 F250 and a clean and straight '68 F250. Both front ends would be in need of new bushings.

The '72 has original drum brakes, so I'm considering swapping in the '73's front suspension with discs.

The parts catalogs that I've been looking at seem to show that the same bushings are used in both, except HD.

The '73's I.D. tag lists a GVW of 8100 lbs. Does anyone know if that's the HD?
Absolutely!

If so, it seems like my bushing choices may be limited to rubber, which would be fine but my experience with new rubber parts is that they don't hold up nearly as well as the old stuff.

Has anyone re-bushed HD I-beams and who were your sources?
1973/79 F250 2WD with dual piston caliper disc brakes have H/D 12" x 2 1/2" rear drum brakes.

1973/76 F250 2WD with single piston caliper disc brakes have 12 1/8" x 2" rear drum brakes.

And: 1966/72 F250 Camper Specials (all 2WD thru 1976) and w/a 7,500 lbs. GVWR also have 12" x 2 1/2" rear brakes as do 1968/72 F250 2WD's with optional dual piston caliper disc brakes.
 
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Old 02-14-2018, 07:50 AM
mofoco1
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My .02 but I would get the front set up from a 76 instead. I went thru this on my 75 SC build. The caliper set up is different on the 75.5ish and below. next to no pad choices, goes up considerably with the later. Look at my build https://www.ford-trucks.com/forums/1...2wd-build.html I went thru it so you don't have to.
 
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