410/411 or 373's!?
Oct 29, 2011 | 12:23 AM
#11
Im most likely guna do a cam /head swap also so I might just wait and see wat it does with 373's. My truck is horrible when it comes to gas mileage. About 290-320 out of a full tank (around town)
Oct 29, 2011 | 06:29 AM
#13
It's like when people ask me how's the gas mileage, and I say, what's that? With my tune on the 6.0, 4.10's and 20's, I'm a little better than 320. It is what it is. I refuse to drive anything that ain't got no powa, I just don't feel safe.
Oct 29, 2011 | 07:41 PM
#14
Man Motor club
Joined: Jun 2007
Posts: 2,623
Likes: 1
From: Sunniest city on Earth
I average 12.5 or so around town, 13 if I drive nicely, maybe 17 on the highway. 6.2 6L80E 3.73 CCSB 4x4 on 285/70-17s. 320 miles a tank isn't bad around town. If you used all 26 gallons that would be about the same mpgs as I get in the city, but nobody runs the tank dry between fills so you're doing better than 13mpg. Sounds fine to me.
Oct 30, 2011 | 09:05 AM
#15
Oct 30, 2011 | 09:14 AM
#16
I average 12.5 or so around town, 13 if I drive nicely, maybe 17 on the highway. 6.2 6L80E 3.73 CCSB 4x4 on 285/70-17s. 320 miles a tank isn't bad around town. If you used all 26 gallons that would be about the same mpgs as I get in the city, but nobody runs the tank dry between fills so you're doing better than 13mpg. Sounds fine to me.
Oct 30, 2011 | 09:21 AM
#17
Oct 30, 2011 | 02:15 PM
#18
I already dont get traction at all on the street. It has a 2inch hanger so pinion shims may be needed?Mine hooks at the track but blows them off on the street. Thats too much for me. I do travel on the interstate a little so thats too low lol honestly it felt faster with the 342's. Thats alot of rpm's! I got a 13.17 at 104 but I was deff in 3rd gear. What size cam do you have?
If you're blowing your tires off, how is a lower gear going to help that? Keep the 3.73s, IMO. Especially if you want a good pull from a higher speed. Get a set of caltracs, and try some nittos. That tire profile on a set of 20s is going to be hard to hook. Maybe widen your rear wheels, and run a wider section width tire.
If you think you're fast w/o traction. Hooking up from a punch or a dig is going to be a huge difference.
4.30s and the first gear in a 60e is going to take more than a tire to hook.
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