GM 6.6 gas
Who's towing what with the new 6.6 gas from GM. How does it do in mountains, how much weight are you pulling, what kind of mileage towing and empty. You all have the real answers, I thank you for you...
Forum Discussion
gmckenzie wrote:
I had a bit of bad luck with my truck (2015 Sierra, 1/2 ton) so I had to rent a truck to pull my trailer home.
Ended up with a Chevy 3500 gas and was happy to try it out. 200kms to where the trailer was, averaged 15.8 l/100km, so a bit under 15 mpg through BC terrain. Not great, but not terrible. My truck (5.3L) would do a couple better.
Towing home, ~8,000 lbs, I must say I was underwhelmed. 30 l/100km (~8mpg) and struggled up some of the hills. Figure I gained maybe 5 km/h going up the hills. I expected better.
I'm going to see if I can rent a Ford 7.3 for comparison. Tough to find right now, but I hope to take a short trip, with the worst hill, with the same setup.
You hit the nail on the head buddy!
8 mpg is actually decent. You must drive slow though.
I can pull 8 mpg on a 6.0 6 speed gm hd, new 5.3 10 speed or a 6.2 Ford 6 speed with less trailer than you’re pulling, like clockwork.
Never run a new 6.6 gasser yet, but seat of the pants, a 5.0 coyote f150, 5.3 6 or 10 speed Chevy will both tow as well from a power standpoint than a 6.0 4.10 6 speed HD gasser.
