Regearing - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 12-30-2010, 11:56 PM Thread Starter
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At what point does it become required to regear for tires. I would like to run 35's on my rig and I am willing to accept the inevitable decrease in mileage and the increase in noise with the tread. Is 35 the magic number where its still okay on the gears or should I go to a numerically higher axle ratio? I have a 3L axle code on my door, its -15F here or I would go look for the axle tag but I would rather no freeze my bejeebers off.
Thanks for looking.

2005 CCSB Lariat, 4" MBRP with 5" tip, Volant Intake, 4x130W KC Daylighters on a Smittybuilt Bar
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post #2 of 3 Old 01-01-2011, 06:03 AM
Let's go B's!!!!

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I have 35"s and did not regear. The odo and speedo will be off though. If you have a buddy with AE he can recalibrate for tires up to 35"


2002 Crew Cab Long Bed
4" BDS, 35x13.50 Cooper STT on 20x10 Black Rockstars, and other stuff.....310,000 miles and counting...
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post #3 of 3 Old 01-01-2011, 06:55 AM
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Don't re-gear for 35's. I re geared for 37's with 4.10's and it was really unnecessary. 38's and higher I think unless you do a lot of towing. In the end you give up a little highway driveability for in town driving.

1970 F250 Crew Cab rebuilt/restored w/Cummin s 4bt

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