[jgrh64]

I haven't checked my mpg yet but it's at least double what my 64 gmc 305V6 4 speed was getting based on how fast the gauge moves based on a 20 mi freeway trip. It has allot to do with the tune of the engine, gearing , driving habits what brand of carburator. My friend had a '03 silverado 5.3 1/2 ton 4x4 10 mpg a $500 month payment and the last time a $600 repair bill for rough running -he sold it off and got an older less costly to repair truck without the monthly payment.