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In the interest of saving weight while adding strength, the '55's big-block is based on a Donovan aluminum block. A Lunati 4.250-inch-stoke crank, Carillo 6.375-inch rods, and CP 4.50-inch pistons make 540 inches. Brodix BB-2 Xtra heads with 119cc chambers make 9.0:1 compression to handle the charge from the Littlefield 8-71. There are eight 80-lb/hr injectors sandwiched between the injector hat and the blower, controlled by a Plan-B hybrid ECU. Street trim called for 10 percent underdrive on the blower while swapping pulleys for race trim yields 18 percent overdrive and 15 pounds of boost.