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Did ford ever use anything lower than 4.10 in the 7.5"


Dirtman

Former Middleweight Moss Fighting Champion
Joined
May 28, 2018
Messages
19,304
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41N 75W
Vehicle Year
2009
Engine
2.3 (4 Cylinder)
Transmission
Automatic
Total Lift
It's up there.
Total Drop
It's down there.
Tire Size
Round.
My credo
I poop in the furnace.
Title says it all, did anything ever come off the assembly line with anything lower than a 4.10 in the 7.5"? I'm still debating a rear swap. My truck has 4.10's and runs great but it hardly ever see's the highway so 4.56 wouldnt hurt. I also don't tow so really no need for the bigger brakes or shafts of the 8.8. Just thinking the 4.56 gears might give me better mpgs around town.
 
Fair enough... :icon_rofl:
 
according to the Tech Page, code 89 for 1999-2001 was a 7.5 open with 4:56 gears

for new gears;
motive gear: F875456
SVL :10001322

both on SummitRacing
 
Last edited:
Cool thanks. I knew i could buy them aftermarket but my plan was to just check the yards for vehicles that had those gears stock. Now that I know they exist and what the axle code is i can start looking.
 
WTF came stock with a 4.56 gear?
 
WTF came stock with a 4.56 gear?

I've gotta guess that it was a custom order thing. I've only seen 4:10 being listed as lowest in a from the factory configuration.
 
I'll find one! I like finding freaks....
 
good luck. several Ford parts sources don't have listings for a 7.5 @ 4.56
car-parts.com doesn't list it either.
 
You where about 1hr too late too post this I literally got done scraping a 7.5 with those gears yesterday at noon
 

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