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Old 08-06-2011, 08:44 PM   #1
zackary027
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Join Date: Dec 2010
Location: Red Level, Al
Posts: 175
To swap or not to swap

my 81 stepside is pushing about 3k rpm at 65mph i feel like its turning a little too hard. i currently have a set of limited slip 3.73 in the truck but my parts truck has a set of 3.08's. would the gas mileage increase be worth swapping them or should i keep the 3.73. i do some in town driving with about 40% highway at 65 mph. im running a 350 bored .40, flattops, set of fairly decent heads. tranny is a turbo 350. tire size is 275 60 15
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