the perfect gas mileage set up. how would it go.
01-03-2011, 05:35 PM
#31
I saw the Mythbusters episode, but dont believe much they do. As SGP93GSX stated they were using different vehicles. It seems like every episode they do something that makes me scratch my head and think these are the best guys that they could find for this show?
As for best fuel mileage, fuel is in direct relation to the air entering the engine. The best way to improve fuel mileage is to increase aerodynamics and lower drag. The less RPM's that you can turn, you are generally better off. I would vote for the high compression 4.8 T56 with tall gears.
As for best fuel mileage, fuel is in direct relation to the air entering the engine. The best way to improve fuel mileage is to increase aerodynamics and lower drag. The less RPM's that you can turn, you are generally better off. I would vote for the high compression 4.8 T56 with tall gears.
01-03-2011, 07:41 PM
#32
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I averaged 16-18mpg in town and 22-24mpg highway in my 02 extended cab 2wd 5.3 with no mods at all but i just puted it around. My 00 single cab 5.3 with e-fans, eton posi, 373 gears, tune, is getting just about as much if not a tiny bit better IF i dont get into the gas. lol
But like they say, more power you make the better mpg you are able to get because it'll take less power to move the vehicle forward.
But like they say, more power you make the better mpg you are able to get because it'll take less power to move the vehicle forward.
04-07-2011, 05:59 PM
#34
I just don't see a cam helping. I know that my 222/226 6.0 lost 1.5-2 MPG on the highway over the stock cam.
Right after the 6.0 swap I had amazing gas mileage. I think it was the ideal setup. ECSB, stock 6.0, stock 60e, factory 255/70/16s, and 3.42s. It would pull down 23.5 mpg highway all day.
Now with a cammed 6.0, 4l80e, factory stall, 4.10s and 285/60/18s I pulled a best of 18.8 mpg highway. I average 12 with the factory stall and with a Yank 3600 I only could average 9-10 mpg and I think did see one tank averaging 8 mpg. With the Yank I could also only get 14 mpg highway, but I think that had more to do with winter gas blend than anything. I was boggled at the jump from 14 --> 18 mpg highway because I always hand calculate my gas mileage at every gas fillup. I also log it periodically on EFI live.
Frankly, I think one of the biggest effectors of MPG is the wheel/tire combo. Back when I had the 6.0 and 3.42s I added the 285/60/18s from the stock 255/70/16s and it felt like I lost 100 ft/lb torque, no joke. The added height, weight, and friction just killed power and I'm sure gas mileage too. In fact, I'm looking to go back to some smaller stockish type tires, in 16" or 17".
Oh yeah, my stock 6.0 got better mileage than the stock 4.8. It was about 1 mpg more highway.
Right after the 6.0 swap I had amazing gas mileage. I think it was the ideal setup. ECSB, stock 6.0, stock 60e, factory 255/70/16s, and 3.42s. It would pull down 23.5 mpg highway all day.
Now with a cammed 6.0, 4l80e, factory stall, 4.10s and 285/60/18s I pulled a best of 18.8 mpg highway. I average 12 with the factory stall and with a Yank 3600 I only could average 9-10 mpg and I think did see one tank averaging 8 mpg. With the Yank I could also only get 14 mpg highway, but I think that had more to do with winter gas blend than anything. I was boggled at the jump from 14 --> 18 mpg highway because I always hand calculate my gas mileage at every gas fillup. I also log it periodically on EFI live.
Frankly, I think one of the biggest effectors of MPG is the wheel/tire combo. Back when I had the 6.0 and 3.42s I added the 285/60/18s from the stock 255/70/16s and it felt like I lost 100 ft/lb torque, no joke. The added height, weight, and friction just killed power and I'm sure gas mileage too. In fact, I'm looking to go back to some smaller stockish type tires, in 16" or 17".
Oh yeah, my stock 6.0 got better mileage than the stock 4.8. It was about 1 mpg more highway.
04-07-2011, 07:55 PM
#35
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I just don't see a cam helping. I know that my 222/226 6.0 lost 1.5-2 MPG on the highway over the stock cam.
Right after the 6.0 swap I had amazing gas mileage. I think it was the ideal setup. ECSB, stock 6.0, stock 60e, factory 255/70/16s, and 3.42s. It would pull down 23.5 mpg highway all day.
Now with a cammed 6.0, 4l80e, factory stall, 4.10s and 285/60/18s I pulled a best of 18.8 mpg highway. I average 12 with the factory stall and with a Yank 3600 I only could average 9-10 mpg and I think did see one tank averaging 8 mpg. With the Yank I could also only get 14 mpg highway, but I think that had more to do with winter gas blend than anything. I was boggled at the jump from 14 --> 18 mpg highway because I always hand calculate my gas mileage at every gas fillup. I also log it periodically on EFI live.
Frankly, I think one of the biggest effectors of MPG is the wheel/tire combo. Back when I had the 6.0 and 3.42s I added the 285/60/18s from the stock 255/70/16s and it felt like I lost 100 ft/lb torque, no joke. The added height, weight, and friction just killed power and I'm sure gas mileage too. In fact, I'm looking to go back to some smaller stockish type tires, in 16" or 17".
Oh yeah, my stock 6.0 got better mileage than the stock 4.8. It was about 1 mpg more highway.
Right after the 6.0 swap I had amazing gas mileage. I think it was the ideal setup. ECSB, stock 6.0, stock 60e, factory 255/70/16s, and 3.42s. It would pull down 23.5 mpg highway all day.
Now with a cammed 6.0, 4l80e, factory stall, 4.10s and 285/60/18s I pulled a best of 18.8 mpg highway. I average 12 with the factory stall and with a Yank 3600 I only could average 9-10 mpg and I think did see one tank averaging 8 mpg. With the Yank I could also only get 14 mpg highway, but I think that had more to do with winter gas blend than anything. I was boggled at the jump from 14 --> 18 mpg highway because I always hand calculate my gas mileage at every gas fillup. I also log it periodically on EFI live.
Frankly, I think one of the biggest effectors of MPG is the wheel/tire combo. Back when I had the 6.0 and 3.42s I added the 285/60/18s from the stock 255/70/16s and it felt like I lost 100 ft/lb torque, no joke. The added height, weight, and friction just killed power and I'm sure gas mileage too. In fact, I'm looking to go back to some smaller stockish type tires, in 16" or 17".
Oh yeah, my stock 6.0 got better mileage than the stock 4.8. It was about 1 mpg more highway.
i know what you mean about wheel and tire combos. i got a gas guzzler in my sig. 10mpg if im lucky.
when my 2000 ecsb z71 was a bolt-on 60e truck i could pull 20 mpg on the highway if i drive conservatively. Heck TRXMXZX and i got 20mpg with the 20s pulling two stand up jetskis and the truck full of gear on the highway. i never gave the truck over 1/4 throttle. if i had to slow down on the highway i eased into the gas till i slowly made it back to 70mph. i was in shock that i got that kind of MPG with the trailer. even though the whole drive i was tring to get the best MPG possible.
04-07-2011, 08:30 PM
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I've got a 229/229 .560/.560 I'm my turbo truck. I'm expecting 26ish out of boost on the interstate. I've got an f-250 and a 4cylinder mustang as dailys and I just picked up an rcsb. 26mpg is very doable with the right setup. Like stated above more air in and more air out with less restriction is better. Id go with 3.42 gears and a t-56, drop the truck and put a bed cover on it, use 16" rims so your moving less mass, efans, tbss intake, ls6 or so heads, reverse split cam (torque cam), 1 7/8 long tubes, and keep it well maintained.
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