07 4.3L v6 nbs (Full Version)

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07 4.3L v6 nbs

  

dway87 -> 07 4.3L v6 nbs (4/6/2008 2:42:27 PM)

hello folks. i got an 07 reg cab 2wd sb nbs w/ 4.3L v6. the gas mileage is terrible. i am getting an overall 13.7 mpg!! what could be done to help the mpg?? i am not a leadfoot, and try to avoid stop lights. i would've gotten the 4.8L v8 but there were none on the lot that i could afford (im a college student). so if anyone else has the v6, what is your mpg? thanks.

  
zkgraves -> RE: 07 4.3L v6 nbs (4/6/2008 2:52:10 PM)

I got an 06 chevy with the votrec 4.3 and i got 14-16  the first few months i drove it.. then it evened out about 15.. i recently got a flowmaster original 40 single in dual out installed, i use a k&n air filter, royal purple oil and the royal purple coolant and im getting 16-17 mpg..i drive fairly reasonable..

dway87 -> RE: 07 4.3L v6 nbs (4/6/2008 3:06:17 PM)

yeah i am thinking about adding a flowmaster to it. i also want to get different gears like 3.92's. anyone know where to get them and how much they cost plus labor? thanks.

northey87 -> RE: 07 4.3L v6 nbs (4/6/2008 3:08:06 PM)

What gears do you have now?

dway87 -> RE: 07 4.3L v6 nbs (4/6/2008 3:13:08 PM)

3.21 or 3.23

northey87 -> RE: 07 4.3L v6 nbs (4/6/2008 4:43:39 PM)

If you switch for those to 2.91, you will probably get worse mileage. 3.21 are are already highway gears and if you go in the direction of 2.91 then your engine will (yes, have less rpms at higher speeds, but) have to work harder to get up hills. Thats probably why your mileage is only 13.5, because engine is already working really hard to get up hills or starting from a stop. I would head in the direction of 3.43 or 3.73 gears. I have 3.43's and am getting 15-18.

dway87 -> RE: 07 4.3L v6 nbs (4/6/2008 5:02:42 PM)

3.73 sounds good. how about an exhaust system/muffler?

northey87 -> RE: 07 4.3L v6 nbs (4/6/2008 9:14:13 PM)

All depends on personal preferences, I stick with flowmaster, but you go with what you want. What are you looking for?

dway87 -> RE: 07 4.3L v6 nbs (4/7/2008 6:51:29 AM)

something with more power and mpg.

northey87 -> RE: 07 4.3L v6 nbs (4/7/2008 7:13:25 AM)

Does your truck have one cat or two? and what kind of connection is after it/them? slip or bolt on?

  

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