Looking at a silverado with a 6.0, really wanted the 5.3 but found this one for a good deal. How much worse gas milage does the 6.0 get and how reliable is it in comparison to the 5.3.
6.0 vs. 5.3
v8jeeptj
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Not really that much worse. The extra power more than makes up for it. You will see 15mpg in mixed driving 18-20 hwy. Guess its a 1/2 ton?
They are the same motor save for the 6.0L has a 4.00'' bore.
Plus it will have more lowend.
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Must be a 2500HD the 1500 VortecMax's have alot less weight hence better mileage.
My '03 2500HD crewcab/shortbed, auto, 4.10 gears and my dad's '02 2500HD extended/short, auto, 4.10 trucks always got around 15 mpg during mixed driving with a bias towards highways. My dad also had two previous 1500 5.3 trucks (both extended cab/shortbed, autos, one 3.73 and the other 4.10). They maybe got 1 mpg better, definitely not 3-4 mpg (that's like 30+%).
My previous truck was an '01 Dodge 1500 extended/short, 5.9 gas, auto, 4.10 gears (the Off-Road package) it only got 11-12 mpg consistently so I was pretty happy the Chevy got noticably better and was more powerful (seat of pants, not just on paper).
My previous truck was an '01 Dodge 1500 extended/short, 5.9 gas, auto, 4.10 gears (the Off-Road package) it only got 11-12 mpg consistently so I was pretty happy the Chevy got noticably better and was more powerful (seat of pants, not just on paper).
My 2500HD with a 6.0, 4.10's, and 245/75's gets 16 running empty with the cruise set at 75 & 2,500 RPM's (a 1500 will be geared MUCH higher, even with 4.10's due to the different transmission). I get 11-13 "in town" (got just over 14 on my most recent tank by REALLY babying it) and 10-11 towing on the highway.
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You don't have to drive 75 or 80! If you can handle driving 60-65 the mileage will go way up!
These truck especially the 1/2 tons will get decent mileage 18+! But driving them 75+ will kill the mileage. My 99 1/2 ton would see 20+ if I stayed out of it and drove 65-70 with all hwy miles.
The key is the driver not the truck. I learned not to get in a hurry and set the cruise. It saves alot of money in fuel.
I'v driven and worked on alot of these rigs...good trucks. If mileage isnt a huge concern go ahead and get the 6.0 in a 2500hd. Good truck sans ifs. The 6.0 doesnt have quite the same bottom end as the older vortec 350, but has better mid and top and makes a bit more power overall and gets similar mileage.
I got a 04 1500 with the 4.8..just a lil 4x4 longbed with 265 mt's and a flowmaster and tune. Averages around 20mpg if im not having too much fun. The 4.8 doesnt have the power of the 5.3 let alone the 6.0 but in a light truck that doesnt see heavy weight often it does just fine and is plenty strong.
I got a 04 1500 with the 4.8..just a lil 4x4 longbed with 265 mt's and a flowmaster and tune. Averages around 20mpg if im not having too much fun. The 4.8 doesnt have the power of the 5.3 let alone the 6.0 but in a light truck that doesnt see heavy weight often it does just fine and is plenty strong.
Driving like you have an egg under your foot helps tremendously. That said, I have no data from running empty other than what I mentioned
I CAN tell you that I've done as well as 11.6 towing my mud racer & as poorly as 9.5 on the exact same route. The difference was entirely in how hard I drove it. Top speed has a LITTLE to do with it, but trying to maintain speed (or not) on hills has a BIG impact.
TEX
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