mpg's on 12 valve
#17
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https://www.dieseltruckresource.com/...t=fuel+mileage
#18
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you have 3.54's most likely running that rpm on the highway, i have 4.10's and at 1700 rpm im doing under 60mph. all of my highway driving is done over 2k+. my around town driving is pretty much under 2k and with my 33's and my stock auto tranny with 117k falling apart, i get around 14mpg, combined with lots of highspeed runs and having my needle on my boost gauge playing tag with the 34psi mark on my 60psi gauge. I used to see around 20mpg when tranny only had 105k and the truck was pretty much stock. so i know it is possible with a 4x4 auto with 33's and 4.10's to get decent fuel economy.
#19
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about 18mpg
mostly Highway with some town and traffic, I get about 18, sometime 17.
I have a 4x4 5speed with 3.55 gears tires 265x70x17 I think. I am like at 2200 rpm on the higway in the 70 to 75 mph area. P.S. I got a stock looking muffler now, with no cat, silencer ring?
Wish I were getting like 20 or more mpg
I have a 4x4 5speed with 3.55 gears tires 265x70x17 I think. I am like at 2200 rpm on the higway in the 70 to 75 mph area. P.S. I got a stock looking muffler now, with no cat, silencer ring?
Wish I were getting like 20 or more mpg
#20
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#21
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Originally Posted by wcbcruzer
I'll have to disagree with that. According to the poll I did a while back, lots of 24v's (if not more) fell in the 21+ mpg range.
I've been at this many years now, and still consistantly see what I posted.
#22
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I just clicked on all the screen names of people who voted in the 21+ category. Of all the voters, there were 11 more 24v'ers than 12v'ers (3rd gen included). I mean, I don't know if 12v's get "better" mileage than 24v's. If anything, they're about the same.
#23
everyone i know around here gets less with their 24's than i do with my 12. the guy i bought it off of has asked if i want to sell it back to him since he only gets around 15. only one other guy i know has a 12v and he gets 15 but he has it pumped up and it smokes a lot. that being said all of them except for 1 have manual trannys, and they seem to accelerate out of corners and around cars like they don't care fuel is 4.19 a gallon. so i think and this is only my opinion not supported by a cnn poll, but if you drive like a sausage and your truck looks like you threw a gallon of 80-90 in a wood stove of course you will get bad mileage no matter what you drive.
#24
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Our is getting around 13 now with the new transmission - hope to improve how it breathes a bit with new IC boots. Of course, it NEVER gets to run empty, always has a load or a trailer on it, or both!
#28
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I get 17.6 around town and 20.8 on the highway running 1800 rpm. I know I can get better, just trying to figure out what holding me back because I drive it like a grandpa
#29
#30
im getting 27mpg mostly highway some city. but i drive to save fuel, speed down hills coast up hills stuff like that. i also have a custom air dam. i love my 12v compard to my powerstroke you can just tell he torque diff. when you hit a hill, it stays right at about 65 and juggs along. I NEVER SEE OVER 2K unless i wanna burn the silt out and turn 4K