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77 F100 upgrade to 3/4 ton suspension

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Old 08-14-2013, 01:42 PM
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77 F100 upgrade to 3/4 ton suspension

Hi there, I am new to the site but a long time ford truck owner & driver. I have a 1977 F100 2X2 long bed that I have had since 1987. I got the truck when I was 15 and could never part with it. Its been setting since 2005 when I blew the motor up. Well its time to give her a rebirth. I have always wanted a 3/4 ton so I have decided to upgrade the one that I already have.

So I wanted to see if I could get some friendly advise before I tore into it. I have already purchased a 3/4 ton rearend with the springs as well as the complete 3/4 ton front end. The calipers are a single piston. So here come the questions & concerns.

Are the front spindles that I currently have on the truck ( 5 lug ) the same as the 3/4 ton (8 lug) If so can I use the 3/4 rotor & caliper. I have not measured or put the micromete on anything to check this. This would save me a lot of R & R.

Can I upgrade the singel piston calipers to the dual piston & still use the caliper mounts and 8 hole rotors?

Will the rearend slip right in or will I have to cut & reweld the spring mounts on the axle. I heard that the F100 had a narrower frame then a 3/4 ton.

I think this is it for now... but I am sure I will have a lot more when its all said and done...

I will also get some pics on the work in progress on here for you all to see the rebirth of my favorite old truck

Thanks again

Trav
 
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Old 08-14-2013, 06:23 PM
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the rearend will bolt right up
 
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Old 08-14-2013, 10:07 PM
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You can bolt the suspension under there, but it won't be legal to work like a 3/4 ton if you get caught.

I would just make it a heavy 1/2 ton so it handle the legal weight better.
 
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