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1971 chevelle ss454 clone

2005 Abarth 750
September 18th, 2017 04:41:33 pm, posted by Mark Finnegan

Have a chevelle 454 SS clone.Previously Malibu Sport Coupe. Motor is a period correct 71 Chevy 454.It has a 10 bolt non posi rear end matched with a 350 turbo automatic. I am trying to schedule car to have an auburn posi converter and new rear diff gears installed. My question is if I go to 3:40,3:42 gears would car still b ok on highway at 65-70. Looking for increased performance out of hole but still ok down the road.Any experienced knowledge with my situation would be appreciated.Thanks , Mark


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