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What kind of mpg can I expect

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Old 10-13-2009, 09:08 PM
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What kind of mpg can I expect

For a 90 rs 5 liter auto? City and Highway. What do you guys get?

Thanks,

MacG
Old 10-14-2009, 12:17 AM
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Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: What kind of mpg can I expect

Mine got 30 hiway before I swapped the 2.73 peg leg out.
Old 10-14-2009, 08:32 AM
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Car: seeking '90.5-'92 'bird hardtop
Engine: several
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Axle/Gears: none
Re: What kind of mpg can I expect

My '91 RS 5 liter auto averaged 23 mpg, both with the stock 2.73:1 axle gearing, and even after I went to 3.42:1 gears and recalibrated the speedometer. With the stock gears, I once saw as high as 29 mpg on a long trip.
Old 10-14-2009, 11:11 PM
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Re: What kind of mpg can I expect

Originally Posted by Atilla the Fun
My '91 RS 5 liter auto averaged 23 mpg, both with the stock 2.73:1 axle gearing, and even after I went to 3.42:1 gears and recalibrated the speedometer. With the stock gears, I once saw as high as 29 mpg on a long trip.
Thanks for the input!
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