Drop Axle compatability Question
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Senior User
Joined: Feb 2006
Posts: 168
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From: Syracuse NY
Drop Axle compatability Question
I am planning on replacing the stock front axle on my 55 F-100 with a dropped axle and have come across onf that was originally intended for a 51 F-1. Would it fit? Are they the same width? etc...
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Joined: Jul 2007
Posts: 4
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From: Guthrie Okla.
Maybe this will help.
The 46-47 Ford axle is 50-3/4" King Pin to King Pin
29" center to center spring pad 1-3/4" wide springs
Kingpin size .8125 46-47 has no shock mount holes in axle
This axle can be dropped 4" overstock
The 48-52 Ford axle is 50-3/4" King Pin to King Pin
29" center to center spring pad 1-3/4" wide springs
Kingpin size .8125 48-52 has shock mount holes in axle
This axle can be dropped 3" overstock
The 53-56 Ford axle is 53-1/2" King Pin to King Pin
32-1/4" center to center spring pad 1-3/4" wide springs
Kingpin size .859 53-56 has no shock mount holes in axle
This axle can be dropped 4" overstock
The 57-60 Ford axle is 53-1/2" King Pin to King Pin
32-1/4" center to center spring pad 2" wide springs
Kingpin size .859 53-56 has no shock mount holes in axle
This axle can be dropped 4" overstock
I know this info because I drop axles .
Ad link removed by FTE staff -- please re-read the guidelines.
The 46-47 Ford axle is 50-3/4" King Pin to King Pin
29" center to center spring pad 1-3/4" wide springs
Kingpin size .8125 46-47 has no shock mount holes in axle
This axle can be dropped 4" overstock
The 48-52 Ford axle is 50-3/4" King Pin to King Pin
29" center to center spring pad 1-3/4" wide springs
Kingpin size .8125 48-52 has shock mount holes in axle
This axle can be dropped 3" overstock
The 53-56 Ford axle is 53-1/2" King Pin to King Pin
32-1/4" center to center spring pad 1-3/4" wide springs
Kingpin size .859 53-56 has no shock mount holes in axle
This axle can be dropped 4" overstock
The 57-60 Ford axle is 53-1/2" King Pin to King Pin
32-1/4" center to center spring pad 2" wide springs
Kingpin size .859 53-56 has no shock mount holes in axle
This axle can be dropped 4" overstock
I know this info because I drop axles .
Ad link removed by FTE staff -- please re-read the guidelines.
Last edited by FTE Ken; Jul 23, 2007 at 04:15 PM.
Post Fiend
Joined: Jun 2001
Posts: 7,493
Likes: 7
From: Erie, pa
Originally Posted by 19017070
Do I need a different drag link with a dropped axle? It would seem that the gear box is now closer to the axle. How about the tie rods clearing the springs?
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Posting Guru
Joined: Apr 2004
Posts: 1,908
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From: Seattle WA.
Dick I'm getting ready to install a 3" Dropped Axle in my 51. I have read some not so favorable things about the Tie Rod Drops. Also I see Speedway quit carrying them. My question is who is running them and have they had any bad experiences with them. Where is the best place to purchase them. Are they all the same or is some better than the others.
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Post Fiend
Joined: Jun 2001
Posts: 7,493
Likes: 7
From: Erie, pa
I've used them a few time over the years, mostly because of the tie rod itself hitting the pan or another part of the undercarrage.
The ones that I used were reasonably well made and held up under some severe conditions inflicted on them by a speed crazed, space for brains, less then reasonable person.
I'll have to check and see who's carring them and where they're made.
The ones that I used were reasonably well made and held up under some severe conditions inflicted on them by a speed crazed, space for brains, less then reasonable person.
I'll have to check and see who's carring them and where they're made.
Post Fiend
Joined: Jun 2001
Posts: 7,493
Likes: 7
From: Erie, pa
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