4.10 or 3.73?

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4.10 will give you better off the line power. I would think going with larger tires and wanting to tow a boat that the 4.10 would be better for you than the 3.73's.
 
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I would go with the 4.10 regardless if you plan on towing or not.



I have had two Sport Trac's, a 2001 with a 3.73 and now I have a 2003 with a 4.10. Throttle response and pickup is noticably better with the 4.10 but overall gas mileage is nearly identical at about 20 MPG on the highway and about 16-17 MPG in the city (I don't live in a big city so my city driving is more like suburban driving. :))



Also, if you have the 4.1o and need to tow something, you will have a better axle ratio.



...Rich
 
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