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Author Topic:   Rear end Swap question on 55 F100
Keahi73
Journeyman

Posts: 64
From: San Carlos, CA, USA
Registered: Mar 2002

posted 04-13-2002 04:24 PM     Click Here to See the Profile for Keahi73   Click Here to Email Keahi73     Edit/Delete Message   Reply w/Quote
Anyone know if the following is a direct swap, or if I need to shorten the rear? I'm parting out my 65 F100 Parts chaser, and want to put the Dana 44 with posi into my 55 F100. The 3.91 gears on the Spicer in the 55 are killing me on the freeway! That Dana would be soooo nice! Aside from moving the spring pads what else do I need to consider?

------------------
68 Mustang Fastback GT
68 Mustang Fastback **FOR SALE**
66 Mustang Coupe
55 Ford F100
Pictures of the new project!

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DidgeyTrucker
Gearhead

Posts: 645
From: Nashville, TN USA
Registered: Oct 99

posted 04-13-2002 08:08 PM     Click Here to See the Profile for DidgeyTrucker   Click Here to Email DidgeyTrucker     Edit/Delete Message   Reply w/Quote
The spring pads from 1953-1972 are the same width and angle. This means that a 9" rear end from a 1957-1972 F-100 bolts right in to the 1953-1956 chassis. The 9" was introduced in 1957 and is the #1 choice for rear ends. The rear in your '55 should also be an early Dana 44. If your '65 is an automatic you probably have a 3.25 gear. ave you checked?

Tracy

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Tracy M&M #245
1956 F-100 Panel w/429
(3.50 9")
1966 F-100 SWB w/351C
(3.25 9" - 3.70 posi for Saturday nights)
Music City F-100's,
1965 GT-350 S/C
(2.78 1st & 3.70 TracLok 9")
Music City Mustang Club
Don't focus on the destination....make the JOURNEY the adventure
Visit my Web site: DidgeyTrucker's Website

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Keahi73
Journeyman

Posts: 64
From: San Carlos, CA, USA
Registered: Mar 2002

posted 04-22-2002 08:50 PM     Click Here to See the Profile for Keahi73   Click Here to Email Keahi73     Edit/Delete Message   Reply w/Quote
Thanks Tracy!

We did the Swap Sunday, and it went smoothly! I yanked the tag off the pumpkin, and the gears read 3.5:1 limited Slip. What a difference! Now, You mentioned other gears for a 65, someone may have changed the rear end once upon a time before we got the truck. It is currenntly an automatic, but when the previous owner did an engine swap, he swapped trannys also. It looks like it was a manual truck. Highway speeds are now attainable and bearable.

Next step is to put the 65's engine into my Mustang! (351C originally from a Torino Gt).

I love your website! It is a wonderful reference!
Thanks Again!
Renee'

------------------
68 Mustang Fastback GT
68 Mustang Fastback **FOR SALE**
66 Mustang Coupe
55 Ford F100
Pictures of the new project!

[This message has been edited by Keahi73 (edited 04-22-2002).]

[This message has been edited by Keahi73 (edited 04-22-2002).]

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