Chevrolet Big Block Engine - The Big-Block From Hell
8. The other half of our rotating assembly is comprised of parts from CP, Lunati, and WPC. The forged CP pistons feature lateral gas ports, a 1.300-inch compression height, and -0.180-inch dish. The ring grooves measure 0.043-inch up top and 1.5 mm for the second groove. The piston skirt also received an anti-friction coating from Embee. The forged Lunati Pro Billet connecting rods measure 6.700 inches long, and the small bushed ends swing on Western Wristpin 4340 chrome-moly wristpins. The 0.990-inch-diameter wristpins have a 0.180-inch tapered wall. The wristpins also feature a proprietary metal treatment process that, according to Ebbert, does increase the strength of the metal, considerably.
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