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try adjusting your air to fuel ratio (if carberated)

If the engine is fuel injected, remove all the injectors and have them individually flow checked to insure they all flow the same quantity of fuel. If you are running a single fuel line, try a �Y� piece and feed both fuel rails from the rear and have the front of the fuel rails as the return both merging into a dual entry fuel pressure reg. This will help dampen fuel pressure fluctuations within the rails due to the firing order. It would be worth running two oxygen sensors on each banks collector to verify the difference in A/F ratios as well as 8 individual pyros in each runner to verify fuel mixtures.

if you don't check the ring cap at the end of the rings in the cylinder before you put them on the piston they could be to long i have been working on Chevy's for over 40 years and i just saw this on one engine just last year it cost a friend of mine 3 sets of pistons and all the work and gaskets before he found the problem. and it was on the right side also

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Q: Why do you keep burning up pistons on right side of block in a marine Chevy 350i know its running lean but why?
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