Eaton 2 Speed axle stuck in Low

What kind of RPM you turning at 60mph?

 

Well dang you got another 500 rpm to go! That thing could turn 2000 all day just suck the fuel. 1800 if you wanna play it safe.

 

We had a T-600 with a big cam cummins we would run back and forth on the interstate it was nothing to run that thing 2100rpm at 70mph. Single straight pipe out the passenger side would scare the crap out of drivers not paying attention when we'd fly by em.

Cats, cummins, Detroits have all been used in ag, construction and generators running 2100 rpm all day long

 

What @lester said. Gotta think old school with it. 2100 was the deal back then. I’ve got 13 od, 4.11’s, and 11 24.5’s. 2100= 72mph.