gears
FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
These trucks came with everything from 3.08 to 4.56 gears, post up the axle code found on the drivers door pilar or compare to the data found here..Ford 7.5 & 8.8 Inch Axle Tag & Door Codes
Cargo Master
Joined: Oct 2005
Posts: 2,084
Likes: 94
From: Stanton, Michigan, USA
These trucks came with everything from 3.08 to 4.56 gears, post up the axle code found on the drivers door pilar or compare to the data found here..Ford 7.5 & 8.8 Inch Axle Tag & Door Codes
BarnieTrk
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Freshman User
Joined: Oct 2012
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From: Cleveland TN
Note: Both rear wheels have to be turned together. If one wheel is on the ground, the ratio will be off by a factor of 2.
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Cargo Master
Joined: Oct 2005
Posts: 2,084
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From: Stanton, Michigan, USA
These would fit...... Ford 7.5 Yukon Gear Ring and Pinion, 4.56 ratio-Broncograveyard.com
An 8.8 rearend is tougher than the 7.5...
.....if you could locate a good, used but complete (brake drum to brake drum) 8.8 rearend housing you'd be better served.
How tall of a tire do you plan to run - know that the taller the tire, the more gear you'll need to stay in your power range.
BarnieTrk
Laughing Gas
Joined: Aug 2003
Posts: 1,175
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From: So. Cal.
Just a heads-up for those contemplating changing from a 7.5 to an 8.8 rear end: be aware that the 8.8 generally comes with larger diameter drum brakes which can lead to rear brake lock-ups, under even moderate braking conditions.
My '91 long-bed came with the 8.8 and I ended up cutting back the shoe material half-way on both rear brakes to stop the locking. If I had the super cab (which is heaver) instead, then I may not have had a problem.
My '91 long-bed came with the 8.8 and I ended up cutting back the shoe material half-way on both rear brakes to stop the locking. If I had the super cab (which is heaver) instead, then I may not have had a problem.
Posting Guru
Joined: Jun 1999
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My 93 2WD XLT supercab came with 3.45 gears and 225-70-14 tires, great for gas mileage in OD. I put a 3.73 rear end under it a year or so ago due to improper towing and it does fine, but about 1-2 mpg less at speed in OD. I can't imagine anything less than 3.73 or 4.11 if you want to push 31 inch or larger tires. Decent used rear ends are not that hard to find, just takes some leg work. My swap cost me $250, sourced and hauled it from the junk yard to the mechanic who did the swap for $150 and kept the old toasted rear end for scrap.
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BergerFromage
Clutch, Transmission, Differential, Axle & Transfer Case
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Jun 11, 2005 01:32 PM