Shannman71, If I remember correctly the 71 C/20 camper special had 411:1 gear and the gas mileage really stinks, the early to mid 70's Burbs had a 373:1 option these are 8 lug and should improve your mileage. But at my age the memory is not what it use to be
but someone will correct me if the old memory has failed me once again
