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Conventional 24-degree cylinder heads have come a long way and Brodix’s CNC BB-3 Xtra oval-port 332s can flow a copious amount of air. At 0.700-inch lift, these jewels already flow 416 cfm on the intake and 290 cfm on the exhaust side, making it ideal for big-inch and power adder combinations. For springs, ours were outfitted with 1.625-inch roller springs with pressures at 260 pounds closed and 790 pounds open. Brodix also offers optional 1.645-inch roller springs with increased pressures at 315 pounds closed and 915 pounds open.