rear axle gears
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rear axle gears
hello thinking of changing the ring and pinion in my axle. The truck is a 2005 crew cab f250 6.0 diesel 2WD. I think the rear axle is stock with the 3.73; i want to go lower and can't decide between 4.1's and 4.58's any one has any input on the gears thanks.
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Joined: Aug 2007
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From: Lakewood, Ca.
I guess the first question is what are you trying to achieve by changing the gears? Do you need a lower ratio because of heavy towing/large tires?
Edit: I was typing when you posted again.
Your mileage will certainly go down. How heavy are you towing?
Edit: I was typing when you posted again.
Your mileage will certainly go down. How heavy are you towing?
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I am looking into getting a 5th wheel and want to know what size to go with i am leaning towards a toyhauler and they are pertty heavy i want to make sure my truck can tow it with no problem and even take a few inclines if i hit the mountains. the RV's i am looking at range from 12,000 to 18,000 pounds. I really dont think it will tow the 18,000lb Rv but looking at makeing it tow a 12 to 14,000 lb easy work for the truck.
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From: The Thumb, MI
I would say 4:10's but I would probably stick with what you have.
Anything lower and your mpg's are going to suffer big time. A 3:73 or 3:55 is a highway gear and 4:10's are used for pulling, big tires, slower driving and heavy loads.
Anything lower and your mpg's are going to suffer big time. A 3:73 or 3:55 is a highway gear and 4:10's are used for pulling, big tires, slower driving and heavy loads.
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I agree with this. I think if you are running stock size tires you will be fine with your 3:73 gears. If you are going to a 35 in. tire I think you should go with 4:10 gears. I have stock tires and 3:73 gears and have no problems towing a heavy load,even on grades.
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