I think some folks are underestimating the amount of interstate driving. In 2018, we were on the interstate all day between Atlanta and Darlington. It was what, almost 300 miles? And 2019, we did a fair bit of interstate driving on I-75 going to KY Speedway from Bristol.
But I did 2019 in a '62 C10 with a big block Caddy, TH350 trans, and what I believe was a 3.42ish rear gear. Although the truck was screaming at 80mph, we survived and somehow got 13-14mpg. Have to believe your 350 w/3.08 ratio rear would be fine.
Would I have liked overdrive? Hell yeah. Would I do the same thing again without the overdrive? Yep.
(but am I planning on taking a different vehicle with overdrive next year? YES)
But I did 2019 in a '62 C10 with a big block Caddy, TH350 trans, and what I believe was a 3.42ish rear gear. Although the truck was screaming at 80mph, we survived and somehow got 13-14mpg. Have to believe your 350 w/3.08 ratio rear would be fine.
Would I have liked overdrive? Hell yeah. Would I do the same thing again without the overdrive? Yep.
(but am I planning on taking a different vehicle with overdrive next year? YES)
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