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Blue Collar Workhorse

...and progressively finer grit stones are used up to 400-grit, in order to remove the plateaus created by coarser stones. This cleans up the bores for better sealing and proper ring break-in. Witness the awesomeness of the crosshatch.
LS2/L92 Engine Package - Blue Collar Workhorse- Tech

...and progressively finer grit stones are used up to 400-grit, in order to remove the plateaus created by coarser stones. This cleans up the bores for better sealing and proper ring break-in. Witness the awesomeness of the crosshatch.  View Related Article