swap in a 13?

Is high gear on your 15 up by the dash ? I had one like that , and kinda liked it.

 

Well if thats the case, then you will love a 13 speed. It will pay for itself a lot sooner.

 

It makes it much easier to get something from the sleeper while cruising.

 

According to CAT the mechanical B was most efficient at 1475 RPM. the 15's are ok but I am like Rank I don't like the big spread between the top 3. I have a 13 in my red and black 85 model I think it's only way to go. in hill country. The one in my sig has a 6 x 4. I like it, but it makes me think about it more, the 13 is just second nature to me. Course I do twist both mine up in a pull around 17 to 1800. The pyro seems to stay cooler if you keep it revved up a little in a hard pull. Although the engine coolant does warm up till fan comes on. I figure that's the lesser of the two evils.

 

Go with a 13 and don't look back. The way I look at it is how often am I cruising around in lo side and need to split it does me no good

 

You're still running a 6+4? Awesome! Not many know what that is anymore let alone how to drive one. I recently did a covert on my 18 spd where I made a cat handle out of oak and put on the stick, and mounted the 18spd head a few inches away on my home made console. Get a way nicer shift with the old style handles, and a way better feel for the gears.

 

I was loading in San Angelo last week a young guy commented I had a cool ol 379 and asked if it was a Cummins. I just laughed and said no and it's a 359 with a white CAT with a 6+4. He had never heard of either had to see them both. He loaded before me headed to the same place I passed him not long after I got on 35. I just wonder what he thinks of a white CAT and a set of boxes now lol