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Old 07-30-2015, 08:42 PM
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sampson159 sampson159 is offline
sampson159
 
Join Date: Sep 2007
Location: columbus,ohio
Posts: 2,170
been a mechanic for well over 45 years.worked exclusively for fomoco.i saw many 429/460 engines.if tuned properly,these engines can produce excellent gas mileage with enormous power.25mpg on the highway is routine.18-20 intown is average.i once had a 69 ltd with a 429 4v.my highway mileage was always near 30 mpgs and intown around 21-22.cold ac,smooth ride and very comfortable.
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