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To set a benchmark, we bolted on a FRPP high-rise dual-plane intake (PN M-9424-E302, which is basically an Edelbrock Performer RPM) and tested several out-of-the-box carburetors on it before settling on the best performer—a 625-cfm Road Demon, which made 370 hp at 6,000 rpm and 358 lb-ft at 4,100 with the stock jetting. The air/fuel ratio was perfect as delivered and the only change we made was to swap a lighter spring into the vacuum secondary pod to ensure the throttle bores opened fully during the dyno pull. View Related Article
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