The Ford Barn - View Single Post - Rear-end swap question

bowtie67 · 05-20-2010, 04:34 PM

I'm not familiar with the Shoebox rearends or the available ratios. On the other hand, I know that the '57-'72 1/2 ton Ford 9" rearends are a near drop in swap for the '48-'52 F1 trucks. They are the right width, bolt pattern, and the spring perches even line up. You have to modify your driveshaft. The big plus for the 9" swap is the ease in changing gear ratios and the avaliability of the "hogs head" center section. I am building a 9" for my '50 F1. I plan on using a 3.25 or 3.50 gear. Anything higher would kill the flatty.
I have access to several of the '57-'72 truck rearends and get them at a very reasonable price.
For me, I would use the truck 9", it's the easiest solution to make your F1 more roadable at today's highway speeds.

05-20-2010, 04:34 PM	#7
bowtie67 Junior Member Join Date: May 2010 Location: Central Illinois Posts: 18	Re: Rear-end swap question I'm not familiar with the Shoebox rearends or the available ratios. On the other hand, I know that the '57-'72 1/2 ton Ford 9" rearends are a near drop in swap for the '48-'52 F1 trucks. They are the right width, bolt pattern, and the spring perches even line up. You have to modify your driveshaft. The big plus for the 9" swap is the ease in changing gear ratios and the avaliability of the "hogs head" center section. I am building a 9" for my '50 F1. I plan on using a 3.25 or 3.50 gear. Anything higher would kill the flatty. I have access to several of the '57-'72 truck rearends and get them at a very reasonable price. For me, I would use the truck 9", it's the easiest solution to make your F1 more roadable at today's highway speeds.