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Old December 7th, 2021, 05:22 PM
Prowbar Prowbar is offline
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Join Date: Dec 2020
Location: Friesland, the Netherlands
Truck: 1965 GMC 1500, 478 V6, SM420
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Default Re: The fuel efficient GMC V6

Quote:
Originally Posted by FetchMeAPepsi View Post
I can't help, but if someone were to design and build a piston that helped with mileage and efficiency, and was a drop-in replacement for ours, I'd buy 12 of them for the two engines I have.
That is a great idea; omit the whole BB chevy piston and longer rod and design a piston with the same weight and wrist pin height, which uses the thinner piston rings, ups the compression by removing the dish, and reduces friction by reducing the large piston skirts...

Also, different diameters could be designed and manufactured for the 351, 401, and 478 engines. This would also do away with the 3 compression ring design which definitely adds to the internal friction.
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