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Old 11-23-2014, 03:37 PM   #28 (permalink)
EcoModding Lurker
Join Date: Nov 2014
Location: Ohio
Posts: 10

Jimmy - '73 GMC Jimmy High Sierra
90 day: 9.23 mpg (US)
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FWIW, I keep a K-5 around for emergencies and some topless fun in the summer, and it gets 10mpg pretty routinely, even with the top off.

Its a mix-match of other trucks but what i know for sure is it has a sickly '73 350 v-8 (more like 7) with a leaky Quadrajet from an '82 350 (oh yeah, its got HEI from '75+), TH350 w/ NP203 (AWD), the axles are 3.08:1, and 31" all terrain tires. Dual exhaust also.

Maybe you can go up slightly on tire size to get a mpg. I'm 100% certain you can do better than my Hauls-All
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