Yes!!! Exactly...keep it slower and keep it safe! 55 - 62 is a good range.

--Eric

 

I can go about 65mph in 4th but I have a 3200 spring. If towing heavy and I really need 4th for it I keep it at 55mph flat and 60mph previous to a grade.

 

I haul in 4th simply because it's easier on the trans. With my 37's I can maintain 70.

 

I usually run in 5th at 55-62 with 3.54's. It pulls fine but you have to keep an eye on the transmission oil temp. On hot days it will bury a 300f gauge.

 

Lugging 5 th when loaded is not good for it.

 

Yea I guess 60 is fast enough towing really

d22019~ 300f on a getrag? Ouch!

Lugging a getrag in any gear empty is bad really.

 

I've always been told 5th was the worst.

 

This is why I love em soo much! They will do anything the new 60K rigs will do just not as fast or as comfortable.....but they cost far less to purchase and keep going..Kidney belts and neck braces and just hang on you'll get where your going!! HEE HEE!!!

 

My 91 had 30ft Gooseneck(6k), 15(5x6) Rolls of hay(1 on the neck)(21K) and whatever the truck weighs and we putted down the road bout 10 miles just fine! Way overloaded I know but never got out 3rd b/c I never got faster than 35mph. My o2 Dually pulled the same load 70mph down the interstate but it was much more expensive to operate. Thats why its gone and the 91 will never leave!

 

Any lugging, of any engine or tranny is bad. Same with over reving...Mark

 

When I was using the old mans truck to drag mine to the truck pulls we were grossing 22,000 and we'd run 65-75. The truck pulled much better at those speeds and would keep up just fine with the newer junk.

Actually had to rescue a buddy on his way back from a pull as the carrier bearing took a crap in his 3rd gen. I hooked on to his trailer and puller and we were off, he was very suprised at how well the old mans truck handled his setup.


On another note I hauled this heavy load back from New Ulm Minnesota. Also picked up a Getrag just north of Wausau WI