Re: 1971 C20 "LS Swap"
You know I'm not actually sure. With the old SBC my step dad never used the passenger tank due to a leak. I'm not sure of the total mileage it will get with both tanks but the new engine should be getting around 14-16 mpg, compared to the 7 mpg he was getting from the old set up. He mainly uses the truck for camping and hauling stuff, but with the new set up I'm sure I'll see him driving around town a lot more. Thanks.
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