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Thinking about getting my pistons and skirts coated on my HO. Is it worth the cost and how much lower can I go with jetting from stock?
 

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you can go lower     but you can only lean out an engine so much, after that perf starts to drop off and you mess up your engine.        if the engine is stock right now,  take the cylinders and case apart and have em ported, and get a little head work done, you will gain more and you can run safer E.G.T's
 
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