|
Re: 2001-2002 Allison vs 4L80E in a K2500
I had the Allison behind the 8.1L in my 2002 K2500. I was good for towing but the gas mileage sucked. I think I got around 6-8 MPG when I had my boat and camper hooked up. I moved up to the Duramax with the Allison and WOW....there is a night and day difference. I can tow anything almost effortlessly now and the MPG is about 15 with everything connected. Oh and I forgot to mention, I can use my cruise control in my Duramax where I couldn't in the 2002 with the 8.1. RPM's would go through the roof. Just my 2 cents and experience.
|