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Aluminum rods are not normal fare for street engines, but Bill Miller contends that these rods will live as long as typical steel rods. Crocie spec’d their length at 6.700 inches using a standard big-block Chevy rod journal and wristpin diameters. The Ross pistons helped create an 11:1 compression ratio when matched with the 70cc combustion chambers. The photo also shows the Mellings aluminum oil pump.