6066 (1960-1966) GMC Truck Club - Would high compression pistons help fuel mileage?

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Mike Caldwell

October 10th, 2022 06:03 PM

Would high compression pistons help fuel mileage?

Since my 401 will need new pistons I'm wondering if custom pistons with a higher compression ratio help me get better fuel mileage?

Prowbar

October 10th, 2022 06:47 PM

Re: Would high compression pistons help fuel mileage?

Yes. More power, better fuel mileage generally.

Mike Caldwell

October 10th, 2022 08:10 PM

Re: Would high compression pistons help fuel mileage?

What about supercharging? What would adding a reasonable amount of boost do to efficiency of our low-compression beasts? (Twin screw for low speeds, not turbo or centrifugal)

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