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Old Feb 23, 2010 | 02:24 PM
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gears?

i have an 02 f150 5.4 fx4 with 35's and offroad often and im putting in new gears and lockers front and rear. wat gear ratio should i go with?
 
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Old Feb 23, 2010 | 02:30 PM
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If you are only wanting the gears for offroad use, why not use low range in the transfer case when off road? This would leave you with a more reasonable road rig and not cost any money up front.
 
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Old Feb 23, 2010 | 02:40 PM
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well low works good but i want a little more out of 2 wheel when im on the road. and i have to replace the rears anyway because the cross shaft came out and took a tooth off of the pinion
 
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Old Feb 23, 2010 | 10:53 PM
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4.56 ratio
 
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Old Feb 24, 2010 | 06:26 AM
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Since you're running 35's I have to agree with 1975IH200. Those are HUGE tires. I expect that they weigh well over 100 pounds each. What that does is place four HUGE flywheels out there that take LOTS of torque to turn. If you're going to be on the road with the truck, especially loaded or towing, it will take 4.56's just to get it to untrack itself.

Couple these gears with a set of full length headers to add torque and then you'll get some performance back. Don't expect this to be an economy car though. It will like gas. As a matter of fact, once you put enough fuel in it to make it any distance at all, you will need those gears even if you're running empty in order to haul the weight of the fuel.
 
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Old Feb 25, 2010 | 06:18 PM
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i didnt plan on it getting good gas lol but it cant get any worse than now with 3.55s i think im gonna go with 4.56s and yes they probably weigh closer to 200 pounds
 
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