Rear end differential
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
The same 8.8 axle was used in the E150 from about 1991 to about 2010, and somewhere in the last 2-3 years of that period disc brakes were added, those would be a nice upgrade but other parts are required to get them working in your truck so it's not a direct swap. These axles were available with gear sets ranging from 3.08 to 4.10 and if your truck has one of the smaller motors consider getting a lower gear(numerically higher) for better performance and better overall fuel economy.
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
Also depends on what the tire diameter is too. Taller the tire, the lower the numerical ratio is at the pavement.
Lead Driver
Joined: May 2004
Posts: 5,011
Likes: 131
From: Maryville
Yeah if you can tuck 33" tires in you'll want 3.73, that requires a lift for 1/2 ton, I see guys doing it with the 250 and 350, looks good, tho steering can be an issue, I was looking at a dually rear, wanted it to put in my E350, then I found it was a 4.63, way too low.
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