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Hi Guys,
I am going to be putting in a zexel unit in my 1990 s-10. To do so though I am going to have to change my rear gear from my stock 3.08. I was thinking about getting 3.42 for the rear end. My question is what can i expect my gas mileage to decrease by by changing the rear gears? Will it be real significant or only a mile or two per gallon? I ask this because I drive about 80 miles a day so any little increase or decrease in gas mileage could be signifiant.

Thanks, Scott
 

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You may lose 1 mpg on the highway but then gain 1 mpg in the city. It will probably be a wash. Also depends if you get happier feet after the gear swap.
 

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T/A drivin foundin member
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with a manual you wont suffer, unless your doin 90 + all day
 
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