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60mph on a set of 37's is not going to strain a 6.2 beyond its limits....

I will not attempt to do a gear swap myself.... I'll gladly pay the extra to someone that specializes in ring n pinions to do it. I have 4:10's with 33in tires on my 79Kw20 and I can run 63mph at 2500rpm's on the highway. The only issue with that truck at those rpm's is watching the 406 small...

After a recent round trip in the M1008 that involved some interstate time, I'm thinking of throwing a set of 37's on. I like the 35's I currently have on the truck, but I felt like I was going to get ran over while going 56-57mph on the highway. I'm not going to swap out the T400, so it's...