I agree w/Jim. New gears + improper pinion depth = premature gear wear. Buy a dial indicator to set it up. Can be done by an inexperienced person with proper tool..to be sure, do it right..
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1967 Starlight black PMD Engineering 400 Auto 1968 Alpine Blue 400 4 speed 1968 Verdoro Green 400 HO 4 speed 2013 1LE 2SS/RS Inferno Orange Camaro.