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Author Topic:   Track widths and kingpins
68F100
Gearhead

Posts: 2144
From: Fort Madison, Iowa USA - United We Stand
Registered: Oct 99

posted 05-04-2004 01:15 PM     Click Here to See the Profile for 68F100   Click Here to Email 68F100     Edit/Delete Message   Reply w/Quote
I'll be moving into a new garage soon (yeah there is a house too ) and will have the space to get some work done on my truck FINALLY.

I was just wondering if anyone here had any clue if the front track width was the same between a 68 F100 and a 77 F150. I plan on swapping the front disks to the 68. I've read that you can swap the whole front I-beams, but if the 77 is wider I don't think I'll like that. I've also read that you can just swap the front hubs, but it is a bear to change out the kingpins. I suppose I should put new ones in anyway since I'll have it apart.

Anyway just wondering if anyone knew. I guess I could just measure, but what points do I measure from?

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MLariviere
Moderator

Posts: 3737
From: Biddeford,Me.USA
Registered: May 99

posted 05-04-2004 10:57 PM     Click Here to See the Profile for MLariviere   Click Here to Email MLariviere     Edit/Delete Message   Reply w/Quote
They should be the same,but I have no data to prove it. If you want to measure, just go from the center of the kingpin to the center of the pivot bushing. That will give you a good idea on the lengths. I don't think you have anything yo worry about. this should be a straight bolt in swap.

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DidgeyTrucker
Gearhead

Posts: 1118
From: Greenbrier, TN USA
Registered: Oct 99

posted 05-23-2004 12:19 PM     Click Here to See the Profile for DidgeyTrucker   Click Here to Email DidgeyTrucker     Edit/Delete Message   Reply w/Quote
I've looked into this for my '66. The twin I-beam design is basically the same from from 1965 to 1979, but there are three different kingpins listed for these years. I've also heard that there was a minor axle change in 1975. Simply moving the pivot points will change the track width so don't worry about that.

Measure the length of your current axles from pivot to king pin and compare. The disc spindles will fit any '66-'79 axles with the right kingpin. I think the biggest difference in kingpins is the lock pin location.

Tracy

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