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Reply to "Wayne's GT5-S rebuild"

This pile of headers and mufflers were tested several years ago. You can see the various types we ran on the dyno combining every muffler on every header. (I modified the various muffler and collector flanges for the bolt-up combos) The engine was a 30 over standard crank Cleavland with cast quench heads and a Parker Funnel Web making an average HP of 488.

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  • IMG_5092
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