Rear gear Ratio Opinions/Suggestions

[custom10nut]

Just throwing this out there for the masses.
My C-10 (350/TH350) currently has the factory 3.73 rear gear.
My goal is to get better drivability on the Highway (65-75mph).
I know mpg is a pipe dream.
Currently it’ll run around 32-3300 rpm around 70mph.
It’s ok for shorter trips, but currently, longer trips are kinda out of the question.
What I’d like ist to get the rpm down around 25-2800 range.
I don’t tow anything, and other than occasionally running to the Lumber yard, it’s really in semi-retirement (like me)
I’m not ready to “upgrade” to a 700r or 4l60,
Would a ratio in the 3.23- 3.35 range help any?
I just wanted to ask

[LockDoc]

-
My '68 was a little different, but not really. It had a 327/TH400 but it had a 4.11 rear gear. I put a Dana 3.54 in it and it made all the difference in the world, as far as driveability. The 3.54's are kind of hard to find but they are out there. You didn't mention if your truck has coils or leaf springs.

[pjmoreland]

I had a '67 C10 that was ordered originally with 4:10 gears. I put a 350/350 combo in it, and it was miserable on the highway. I swapped in 3.08 gears, which made it great for highway cruising. I drove that truck between California, Colorado and Oregon many times over the years I owned it. A set of 3.08 gears would drop you from 3300 down to 2700. The down side, of course, is that you will end up with a very sluggish first gear.

[geezer#99]

Just drive slower.
60 mph is about 2700 rpm.

[dmjlambert]

The economy gear is 3.08 and that's what came stock on my 69 with a 350 and TH400 transmission. 3.08 sounds ideal for your situation IMO.