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Bigger valves?


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Here in a couple months, I'm going to be getting my hands on a set of brand new OEM gen 3 heads. I was wondering since I'm going to be having them worked a little bit, is it possible to put larger valves in them? Has anyone done it and if so, where do I get the valves? I'm also going to be upgrading the valve springs as well to a stiffer spring rate.

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