Re: higher MPG
I second what Lee H says above because I drive a stock '69 with a 350 and a stock 4spd (only use 2-4 usually) with a curb weight of over 5300 lbs. with all my tools onboard and I get about 12 MPH no matter how I drive or what I haul in the back. So your 9 MPG means to me that something is way off.
WLH
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'69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, stereo speakers, 2nd owner, Work-Truck supreme.
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