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Since we had it available, we ran a Holley 750 HP carburetor equipped with Percy's Adjust-a-Jet system. An affordable alternative will work equally well on this mild 305 application, we ran it because it simplified tuning on the dyno. Once assembled and run on the dyno, the modified 305 produced 362 hp at 5,800 rpm and 353 lb-ft of torque at 4,500 rpm. More importantly, the 305 offered an impressively flat torque curve, bettering 340 lb-ft of torque from 3,500 rpm to 5,500 rpm.