hey everybody i have a ? about my 1992 f150 2wd with the 5.0..Does anyone know what gears would be in this by chance? i am putting a 6" lift with 35's on it and i was wondering if anyone knew what would be the best gears to change to and how much that would run me in cost..alot of you are probably thinking im an idiot for lifting a 2wd but the fact is 2 of my buddys have a 92 and a 95 2wd lifted and they look badass. They go through mud longer then some 4wds. if anyone knows what gears would be the best to upgrade to please let me know and possibly a good place to find them..Thanks alot

 

Look at the vehicle ID sticker on your door jamb.
Under "axle" there is a code

18 = 3.08 open diff
19 = 3.55 open diff
H9 = 3.55 LS diff

The stock tires are 29". If you got to 35" tires and you wanted to keep the same speeds in gear, you'd want gears that are approximately:

(35/29) * your present ratio.

If you have 3.55s that would mean
(35/29) * 3.55 = 4.28. The closest available common ratio is 4.33.

If you have 3.08 gears, the equivalent would be:
(35/29) * 3.08 = 3.71. The closest available ratio is 3.73.

But with those huge tires, I think you will quickly find that 3.73 is nowhere near enough gear and that 4.33 may even be lacking. It takes a LOT of torque multiplication to overcome that much inertia. If it were mine, I think I'd be looking at 4.56 gears (or a more reasonable set of tires).

 

hey thanks alot for the information that helped alot..I dont know alot about finding parts but if i were to pursue this do you know of a good place that sells gears..thanks

 

StrangeRanger i went and checked it out and it is the H9, is that also the 8.8 differential?

 

All 92 F150s have an 8.8" 31 spline rear

 

Hey thanks alot youve been a great help..

 

Yup all F-150s and Broncs since '85.

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