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Re: 4.3l vs. 5.7l in a commuter truck
If you wanted to get radical about mileage swap in an NV3500 5 speed with the 4.3L. We had a '92 silverado with that combo that could get 20mpg. I remember a trip across the plains where every tank of gas lasted 500 miles!
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'86 GMC C30 Crew ~ '86 C20 Crew ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '74K10 ~ '71 Cheyenne swb ~'50 3100 bagged ~ '80 Wife ~ Late model kids
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