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OLDSMOBILE ALERO 2002-2004
6 int duration
Using aluminum keeps these calipers 5 pounds lighter than the stock iron calipers
These neutral shafts eliminate the HP loss incurred from creating this vibration
the stock PCM would only allow downshifting to 3rd
3800 Valve Spring Retainers Model:Steel OLDSMOBILE ALERO 2002-2004Update June 2021: We are proud to announce our new and improved modified steel retainers. These retainers have the weight of titanium but the strength of our traditional steel; the new design weighs in at only 8 grams vs 11 grams on the old design. On a 3800 you're saving 36 grams of valvetrain weight with our new design! These modified retainers are recommended for anyone swapping to a heavier than stock valve spring. New style pictured in the
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