In this episode, we do a quick ring and bore breakin. Then, we started testing and tuning. Over the next few hours, we ran multiple tests and adjustments, jetting and timing, testing two carburetors and trying three different spacer variations. The day's big surprise was a dimpled intake spacer manufactured by Polymer Racing Products (https://polymerracingproducts.com). To our surprise, after swapping out the Wilson spacer for the Polymer one and with no additional changes we added an impressive 21.38 HP and 10 lbsft of Tq to the power curve!

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