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Re: Heavy hauler mpg's and highway speeds?
Big Bertha has a 468 cubic inch big block with a 4l80e tranny, 5.38 rear with 9r22.5 tires. She gets 13 mpg empty and 8 mpg with our 11k pound camper. Fastest I ever had it was 97 mpg according to the gps.....I was late to go pick up an Elcamino in NY. I don't think I would try any faster than that. It was a hand full at that speed. Usually I don't run any faster than 70 mph.
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1959 Apache Short Fleetside,
1959 Apache NAPCO Long Stepside,
1957 3100 with 59 fleetside bed
1957 5700 LCF Crew Cab "Big Bertha",1959 GMC F370
1958 GMC 600, 1946 Chevy, 1959 Viking 60 LCF
1974 Elcamino SS, 1979 6500 GMC Tilt Bed Wrecker
Big Bertha Build
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