Doh! Left out the important details.
It's a GMC 302 six out of '53 big truck, that I'm putting in '52 Chevy 1-ton. Transmission will be a Clark 280VO, where top gear is 0.8 overdrive. Rear end going from 5:14 to 4:10 when I find a suitable donor, or 4:57 at the highest. The goal is to cruise at 60mph with 2000rpm (on the flat).
