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Chevrolet Big Block Moly Rings

9. Akerly & Childs moly rings make up the pack. The narrow top groove is filled with a 0.170-inch radial wall ring. Groove No. 2 received a Napier hook groove ring with a 0.165 radial wall.
Chevrolet Big Block Engine - The Big-Block From Hell

9. Akerly & Childs moly rings make up the pack. The narrow top groove is filled with a 0.170-inch radial wall ring. Groove No. 2 received a Napier hook groove ring with a 0.165 radial wall.  View Related Article