my next truck will definatley be a diesel. We aren't even buying diesel motors in our F450 servic trucks work due to the high cost of maintence, I'll put it that way.īut, with all that said, given the fact that the Ford V10 isn't really an answer to a real big block, and even if GM re-introduced the 8.1L as an option (not buying a government motors vehicle), and the fact that I don't think a 6.0L cuts it for towing a 8,000-lb trailer 5,000+ feet. 90 MM Throttle body, Marine injectors, and shorty headers I calculated the new CID at 9.5L. I have a 540 block, Raylar CNC Heads, BP-202 cam. I am attempting to tune an 2001 GMC Yukon 8.1L. Any sort of two lane highway dropped it to around 7.0, even at 55-60 mph. Heavily weighted toward interstate cruising (we crossed the USA multiple times) where mpg was optimal, usually 8.0-8.1 at 64-65 mph. The big blocks eat more fuel, but you never have to worry about them not starting and mill be a truck waintenence is cheap, etc. I fully understand how VE and Fuel trims work. The 2002 W22 we had averaged about 7.6 mpg over 50k miles. The diesels do have more power to tow, but the maintenence is more expensive. But based on some cost projections I've run in recent years, the payout on a diesel is not as quick as you might think. Obviously this is dependent on the price of fuel, oil, etc. If you put any less than that on it, the payout is the same or less.
8.1 VORTEC MPG AFTER TUNE MANUAL
If you plan on putting 250,000 miles on your truck, a Diesel will pay out in the long run. The Tunesport Chip calculates the correct combinations of air, fuel and spark to produce more power, tuning in real-time to unlock up to 30 Horsepower and up to 8 MPG in your vehicle The Tunesport Performance Chip is designed to work with both stock and modified engines, manual and automatic transmissions, turbochargers, superchargers, gas. bigger than that it'd be kinda slow in the mountains, but I really don't have any trouble at all with my dads 26' charmac enclosed with 3 sleds and fuel and gear, etc.Ĭontrary to popular belief, you don't need a 1-ton diesel to tow a lawmower. With that said, I think about an 8,000-lb trailer is the biggest I'd ever pull with the 8.1L.
8.1 VORTEC MPG AFTER TUNE DRIVERS
Every gallon of gas Ive put in it has been logged on a clipboard I keep by the drivers seat. Its not a fuel economy queen, but its a lot cheaper than a diesel overall, and they start when they're cold. My 2004 36 foot Workhorse chassis with the 8.1 engine has averaged 7.1 MPG over the past 90,000 miles pulling a 4,000 lb toad. Haven't had a lick of trouble with the motor at all or trans at all, and this truck pretty much doesn't even leave the driveway from december till june unless its got a trailer behind it. Same mileage with the 265's as 285's with either a 4,000-lb trailer or a 6,000-lb trailer. It doesn't matter what trailer tack onto this thing, it gets 9 mpg towing. I get about 13.5 unloaded on the highway with the 285's, I got about 14.5 with the 265s 70 mph. With the 285s, I lost about 1 MPG, and yes I have my speedo programmed correctly. I would say your best bet if you want a gasser is to find a slightly used 2007 2500HD or 3500 with the 8.I have a 2005 2500HD, 8.1L, 3.73 gears, 285/75 tires. the 8.1 definatley excells when you put a trailer behind it. Cold Air Intake Kit for Chevrolet Silverado 1500 (2009-2013) with 4.8L / 5.3L / 6.0L / 6.2L V8 Engine Chrome Black. Truck only has 40,000 miles on it, its a 2001 4 door long box. Wish it had the duramax though, diesels are more fun lol. 2001-2009 Vortec equipped trucks use the same computer as a 1997-2001 Corvette (LS1). Below are a list of marine and street tuning companies that can handle your computer / pcm tuning needs. One fill up was 4.6 mpg :face-icon-small-sho. Vortec 8100 / 8.1L / 496cid Computer ECU / ECM Tuning Please note: Raylar does not offer computer tuning for the Vortec 8.1L / 496 MAG engine. Pulling just the 3 place trailer with one in the back of the truck we were getting average of 6 prolly. I've never towed more than a 5,000-lb trailer with either, but those enclosed trailers pick up enough wind to make up for the lack of weight. 8.1's are great motors but be ready to pay at the pump :face-icon-small-win. The 6.0's do get better miledge than the 8.1's do, but once you throw a trailer behind either they are pretty comparable. it's either in 4th gear lugging down or in 3rd gear wrapping 4800 rpm 70 mph. that's the biggest problem with my dad's 1/2 ton 08' 6.0, the spread between gears on that 4 speed is way too big for that motor. The 6.0 is a good motor, don't get me wrong, but the power band on that motor definatley needs more than 4 gears to work with, especially when towing a load. That would assuredly be better than the ones mated to a 4 speed auto. Īctually, if I was going to buy a 6.0 to tow with that was older than 2008 I would highly recommend getting one with the 6-speed manual transmission. IMO, I wouldn't buy a 6.0 unless it was a 2008 or newer, due to the fact that you can get them with a 6 speed auto.
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