Should be a bit better than that, all these trucks need taller gears, overdrive etc. My 53 3600 (235 .080 over, twice pipes) would get down the highway, barely, now with 4:11s it's better in every gear. Lots of ways to make it better, read tech tips etc and others will be along with lots of ideas.

Very nice truck btw!
Good luck

Last edited by JiMerit Boltr#43; 06/29/2014 8:11 PM.
It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed