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What Size Rear End?

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Old 12-31-2009, 02:03 AM   #1
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Default What Size Rear End?

I have a 97 F-150 I know that the gear ratio is 3:55ls. I want to upgrade
to 4:10ls, But will I have to do anything other than change the ring and
pinion? I would also like to know how to find the rear end size if any one could help.
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Old 12-31-2009, 02:16 AM   #2
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ring and pinion swap would do the job.... thats usually how you do a GEAR swap, is with the ring and pinion GEAR.

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Old 12-31-2009, 02:26 AM   #3
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Quote:
Originally Posted by 1996 Redneck F150 View Post
you more than likely have a 8.8 inch rear end.... ring and pinion swap would do the job.... thats usually how you do a GEAR swap, is with the ring and pinion GEAR.
^ What he said.. Basically you answered your own question. Ring and pinion is how you change the gear ratio.

Last edited by AZFX4; 12-31-2009 at 02:30 AM. Reason: 1996 likes boys.
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Old 12-31-2009, 02:32 AM   #4
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What I was askink was will it remain limited slip?
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Old 12-31-2009, 02:35 AM   #5
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if you change the ring and pinion gear ONLY, then yes, it will still be limited slip...
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Old 12-31-2009, 02:43 AM   #6
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How do I know exactly what size the rear end is though.
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Old 12-31-2009, 03:36 AM   #7
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Also, is your truck 4x4, if so you'll have to change the front gears as well.
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