Gear ??

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Jun 27, 2009 | 10:26 PM

Dustin91ford

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Gear ??

I cant seem to find what the lowest gears I could put in my 91 f150. Whats the lowest gears ratio and what truck would i find them in?? thanks for the help!!!

Jun 27, 2009 | 10:36 PM

alxsnmr

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From: St Louis

Look up a gear vendor like summit racing or such since the rear axle is shared with a mustang you have alot of available gearing. You are pretty limited on factory gearing as the lowest factory gears were the 4.10s in the 8.8 and that was a rare truck to have them. You may be lucky to find 3.73s but the typical gears are the 3.55s.

Jun 27, 2009 | 10:45 PM

1966Tbird

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i think you can go up to a 5.13 ratio with a d44 and 8.8 but if you do that be prepared to break a lot of stuff in the front end and maybe in the rear

Jun 27, 2009 | 11:04 PM

Dustin91ford

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Anyone know what trucks these would be in so I can pull them at the junk yard??

Jun 27, 2009 | 11:30 PM

rikard

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From: North Reading Mass

Look for a vehicle equipment sticker on the drivers door jamb. The F150s with the 3.73 limited slip will have a axle code of B6.
regards
rikard

Jun 28, 2009 | 12:11 AM

Dustin91ford

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Do they all interchange??

Jun 28, 2009 | 03:54 AM

17fordguy

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From: Colorado Springs

they will interchange but it is better to have a shop do the work because there are precise messurments that are required to make it work right and not grenade in the axle.