3.73s or 4.10s

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05-06-2011, 01:32 PM

BIGskinny

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3.73s or 4.10s

Thinking about doing gears in the rearend of my 90 f150 5.0 running 31s not sure what ones to do 3.73 or 4.10. Any ideas?? Thanks

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05-06-2011, 01:35 PM

lew52

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Everone will want to know what motor , tire size , how tall the tries are ....

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05-06-2011, 01:40 PM

BIGskinny

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Quote:

Originally Posted by lew52

Everone will want to know what motor , tire size , how tall the tries are ....

That's true I should of mention those I'll edit the post. Thanks

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05-06-2011, 01:53 PM

86F150302

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What gears are in it now? 3.55? If so I personally wouldnt bother with that size tire.

If you have 3.08s or something I would do 3.73s

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05-06-2011, 01:56 PM

BIGskinny

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Quote:

Originally Posted by 86F150302

What gears are in it now? 3.55? If so I personally wouldnt bother with that size tire.

If you have 3.08s or something I would do 3.73s

as far as i kno there 3.55s thats what the axle code on my door says, unless they were changed before i bought the truck.

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05-06-2011, 03:52 PM

Conanski

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4.10's all the way and especially if you have an AOD, plus next time you change tires I bet you'll want to go larger still and you'll already have decent gearing in place.

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05-06-2011, 05:43 PM

LARIAT 85

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Conanski, if a person were to go from 3.55 to 4.10 gears with an AOD transmission, will the AOD throttle valve cable have to be re-adjusted, or do any other modifications need to be done to the transmission?

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05-06-2011, 11:13 PM

blkfordsedan

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Don't fear the gear! Go 4.10s......especially with a 302, big tires and an overdrive trans. It will feel like a different truck.

I assume it's a 4X4 w/31" tires? Don't forget the front gears as well.

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05-07-2011, 10:31 AM

punkandpissed138

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4.10'S FOR THE WIN!!!!! haha, i have 4.11 on my rear and 4.10 on my front with 31x10.50's in a 302 with an E4OD and i love it. originally had 3.55 gears and stock 265/75R/15 cooper tires. truck likes the improvement.

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05-07-2011, 11:06 AM

Conanski

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Quote:

Originally Posted by LARIAT 85

No other adjustments necessary to accommodate the gearing.. though since guys generally install those gears to help with larger tires the speedo should be recalibrated.

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