My 450 is getting a new top end, accept this time im going to an athena 490cc big bore kit, a stage 2 hot cam, Staneless valves? and some head work. I have 0 experience with the 490 kit and I wanted to know if anyone has tried it with a similar cam set up? The big bore kit says its around 60hp once bolted on, and I will be runnih PUMPGAS (97) is this true?
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