Guest BrianFrance Posted May 6, 2016 Share Posted May 6, 2016 is there a place to get a new ring and pinion for a 50 Pontiac silver streak 8. want a 3.55 at least. Link to comment Share on other sites More sharing options...
valentinos garage Posted August 28, 2016 Share Posted August 28, 2016 U out a 3.73 gear out of an automatic in mine. Would prefer a 3.55 but so far I have never heard of one. Link to comment Share on other sites More sharing options...
poci1957 Posted September 8, 2016 Share Posted September 8, 2016 The Pontiac parts manual indicates they made them as follows, part number is for a ring & pinion set: PART # Ratio 516700 3.63 516699 3.90 516698 3.42 518565 3.23 Looks like they show a 3.90 available at www.pontiacparts.net . You could also try Kurt Kelsey at www.kelsey@prairieinet.net Good luck, Todd C Link to comment Share on other sites More sharing options...
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