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the Speedmaster piston oil ring spacers will keep your pistons working smoothly throughout the entire operating range
It is set up to accept a spread bore carb but comes with an adapter plate that permits the use of square bore carbs
the need for more airflow is necessary
quickest possible shift
GM Turbo TH400 Billet Aluminum Piston Direct Forward the Speedmaster piston oil ringThis lightweight billet aluminum replacement for the hard to find OEM replacement isn't only a more cost effective way to go but also adds a performance advantage. The piston weighs approximately 55% less than the OEM counterparts and designed to hold up to 6 clutches. Utilizes a 34 element Sprag Assembly.
