The trusty old bigblock is bored and honed to make room for the 0.040 oversized Keith Black hypereutectic pistons. These are made of a unique aluminum alloy that contains dissolved and free silicon. KB pistons have shown improvement in power, fuel economy, cylinder sealing, service life, and cost effectiveness. The reduced thermal expansion rate allows the piston to be run with reduced clearance. A tight piston is less likely to rock, make noise, and burn oil. Anyway, I'm sure the engine will sound awsome.
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