PerTronix D1070 Flame-Thrower Black Cap Race Distributor HEI for Chevrolet Small Block/Big Block New lightweight A384 cast aluminum alloy housing Aligned and honed high quality bronze sintered bushings for reduced friction and extended life Centerless ground corrosion resistant shaft reduces friction and provides concentric operation RACE ONLY 72 amp module and 50,000 volt coil Distributor gear is ground to exact tolerances for tighter mesh with cam (Bronze distributor gear available)