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cvicky · 04-23-2020, 11:50 AM

my 55 Fairlane revs 2900 rpm at 60mph I have 3spd on the tree with 10 tooth pinion and 33 ring gear is there a newer dif that will fit with Hwy gear like 273 i'm told 55/56 are one of a kind 57 + is bigger

04-23-2020, 11:50 AM	#1
cvicky Senior Member Join Date: Jul 2018 Location: Ottawa, Ont Canada Posts: 161	dif gear ratio my 55 Fairlane revs 2900 rpm at 60mph I have 3spd on the tree with 10 tooth pinion and 33 ring gear is there a newer dif that will fit with Hwy gear like 273 i'm told 55/56 are one of a kind 57 + is bigger