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troubled mpg's

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02-29-2012, 07:46 PM	#1
rruss86 Registered User Join Date: Feb 2007 Location: California Posts: 12	troubled mpg's i have a 1987 chevy suburban 3/4 with a 454 w/TBI it has a 400 trans and 4.10 gears... mine is used for freeway use.going to shows and cruise nights.. i have 265-35-22 its a 29.3" tire... a few people say bigger tires or new gears... any ideas what i can really do to raise my mpg...

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