I run a 2006 Chev Duramax, six speed Allison, full Banks Six Gun programmer, Banks Brake, exhaust, air box and an Air Dog lift pump. I run Hankook 285x75x16 tires, rated at 3750 per tire with air bags. Besides the R-27 I pull a Montana 3400 RL rated at 15,500 lbs. For the boat I have a 21/2" receiver. The truck does not even know the boat is there, and barely the big trailer. But the key for me has been not only the power of the diesel..for hills, merging or passing, but the diesel handles the wind soo much better because of the torque. Granted I run in level three at about 425 hp and 800 + ft lbs of torque, but the Banks brake as part of the programmer with the veriable vain turbo cuts the stopping distance almost in half. If one can find a good 00 or 07 Chev or GMC they are the best with the six speed Allison and few emissions, and can be programmed for power. The 04 and 05 Dodges with the Cummins are strong, but the tranny just doesn't match the Allison.
The Fords of the era had too many tranny problems. The new Rams are a real buy and it looks like Ford will finall get the turbo right for '15. Its all fun.
Has anyone cupped the prop on their R-27 Volvo diesel set up? Mine pulls 4180 rpm, which means either the wrong pitch or I have a strong mill.
Robert