3:73 vs 3:54's? - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 4 (permalink) Old 04-30-2008, 05:24 AM Thread Starter
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3:73 vs 3:54's?

checkin out randy's ring and pinion
I run nothin smaller than a 285/75/16

will changing my gears from 3 73's to 3 54's make that much differenc?

bein a 4wd 3 54's is the most i can change

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post #2 of 4 (permalink) Old 04-30-2008, 02:13 PM
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Re: 3:73 vs 3:54's?

I doubt you would notice much if any gains in MPG. I would stay at 3.73's personally.
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post #3 of 4 (permalink) Old 04-30-2008, 05:16 PM
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Re: 3:73 vs 3:54's?

;whs: Figgure the cost vrs savings don't add up. Now maybe 4.10+ to 3.55 would be worth it. But just stick with the 3.73 it's a good all around gear.


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post #4 of 4 (permalink) Old 05-02-2008, 12:48 AM
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Re: 3:73 vs 3:54's?

I do agree that 3.54s at this time are not really worth the expense. 3.54s will reduce your engine RPM by only 5%.

A better approach (especially for a 4x4) is to go with an overdrive. The Gear Vendor will reduce engine RPM by 22% and the US Gear will reduce RPM by 20%. Both are very durable in fact far more durable than Ford automatics but they are salty. Figure somewhere between $3,000 and $3,500 installed. The payback @ 4.00/gal is about 100,000 miles.

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