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My 1970 C30 402 auto longhorn gets 15(at 60-65 mph) on the highway, and 12 around town, 4.10 rear, t400, the longhorn is all stock, except an HEI and headers/glasspacks. and my 68 2 wd drive burb gets 18 highway(65 mph), 16 in town. It is almost stock, but a newer 350 with unknown, but high compression heads, performer intake, Qjet, HEI with an sm465, and 3.07 rear, 31 inch tires. It has ?10.5:1? CR. It is stifled by a puny single exhaust system, and if I go much over 65, the fuel mileage goes down exponentially.
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jku Cornville, Maine
68 C10 burb
42 Willys MB
46 Dodge WF-32 1.5 ton
53 & 56 Olds'
60 Cadillac
22 Dodge Brothers
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