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Last month, the engine machining, blueprinting, balancing, and assembly was completed. Here, Clay Fetter (left) and Dave Barton ready our street brute for dyno duties. For baseline dyno pulls, our wedge was equipped with a RBRE .638-inch-lift solid flat-tappet cam and 2 1⁄4-inch dragster-type headers with 4-inch collectors. These dyno headers feature exhaust gas temperature (EGT) probes on each primary tube to monitor exhaust temperature at each cylinder, which is useful in tuning the motor. The baseline began with the 950 Holley HP, and then we switched to the 1,000 Race Demon. The deep-breathing 493 enjoyed the bigger carb, exhaling 5 more horsepower.