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  1. L

    Average mpg

    I have a lot more miles on my cammed 6.2 now. Stoplight to stoplight with some 40 mph roads between is around 11.5 as well. Straight highway is right at 19 mpg at 65-70 mph. That's exactly what the L92 was EPA rated as, 12/19. Seems like DOD on the 6.2 picks up another 2 mpg in the city as...
  2. L

    Anyone running 400hp 5.3L?

    What engine is it? I thought 6.0 in trucks was always an iron block.
  3. L

    6.2 swap thread

    Yes, pressure needs to be stock with circle D trans. Pull that tune so I can look at it. That trans temp is too high considering the ambient temp. It was 45 out today. I drove all day today and never got over 139. From their website "Auxiliary Cooler You need to install a stacked plate...
  4. L

    6.2 swap thread

    Spent a good 2 hours tuning today. My idle/drivability was really funky. I'd get horrible cold starts and random idle surges. I decided to start from scratch and just copy over every Idle tab table from a stock L94 6.2 tune. Flashed the tune, truck started right up and idled perfectly with...
  5. L

    6.2 swap thread

    I'm not sure, but your trans is a built circle D trans so it's apples to oranges with mine. I am a member of 6l80etuning.com, I pay the $99 annually to access his knowledge. He specifically mentions if you have a Circle D trans, DO NOT touch the shift pressures. Since it sounds like you were...
  6. L

    6.2 swap thread

    Mine has a trans and oil cooler. GM 20935856. I think I'll just roll with it for now. Maybe my shot engine mounts had something to do with it, idk.
  7. L

    6.2 swap thread

    Mine has cooled great, no complaints there. My trans temp chills at 129 and never really goes above unless I drive it hard. I have zl1 stall, the mishimoto, and the deeper trans pan. Stall converter tuning will have a giant affect on the trans temps. Also, I wouldn't look to the radiator...
  8. L

    6.2 swap thread

    Ok boiling point of water is 212, so that makes sense for keeping condensation out the oil. I wont touch it.
  9. L

    6.2 swap thread

    Mine has the trans cooler, so OEM happens to be nearly $500. Not sure what I am going to do yet. Do I wanna risk trying it one more time? Or try to sell and buy OEM. While I have the coolant out, is lowering the thermostat worthwhile? I don't want 160, but running around at 212 all the time...
  10. L

    6.2 swap thread

    Exactly. Oem replacement is 450 bucks shipped. My thought process was well, the Mishimoto is only 100 more and its better! Didnt even last 10k. Im reading its a design flaw in all of these aluminum tank radiators. They crack at the core to tank weld over time. Thats why oem uses plastic...
  11. L

    6.2 swap thread

    Yeah they just make you pay $50 to ship. And then two gallons of Dexcool is another $35. I would say you get what you pay for, but these things aren't cheap.
  12. L

    6.2 swap thread

    Mishimoto is sending me out a brand new replacement, do not even have to send back the old one. I am thinking with a warranty like this, their business model is to make really cheap stuff and just jack the price up to cover issues.
  13. L

    6.2 swap thread

    Lets see if flex fuel, more tuning, faster shifting and my corsa can get the 0-60 to 5.3 seconds. Will need to wait til next week though.
  14. L

    6.2 swap thread

    Got the flex fuel in. Ran into two issues. Of course the easy stuff is always the shit that gives me problems. 1) I stupidly broke the molex connector clip inside the ECM connector. The connector hole was blocked, so I stuck a pick inside of it to open the hole. Of course the clip inside...
  15. L

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    A nice polish makes a huge difference. Nice wheels too.
  16. L

    6.2 swap thread

    I just can't leave shit well enough alone, need to constantly tinker with shit.
  17. L

    6.2 swap thread

    Submitted Mishimoto radiator claim :( At least it's a lifetime warranty and sounds like they just send you out a new one.
  18. L

    6.2 swap thread

    Once I am done my tuning, I will pick one up. I'd like to be able to always view fuel trims and KR.
  19. L

    6.2 swap thread

    While I do have HPTuners, this would be cool to have in the truck at all times. Very cool, can configure the dash as well as the touch screen. Does 0-60, 1/4 mile, etc as well. https://www.autometer.com/dashcontrol-obdii-display-controller-gm-full-size-truck-gmt900-gas-2007-2013.html
  20. L

    6.2 swap thread

    Yes you are right, thank you for setting me straight.... My apologies sir.
  21. L

    6.2 swap thread

    Flex fuel kit just got here. I was able to get it for about $200, so about $100 off. Since ChadW was able to determine I am poor because I prefer to keep my vehicles longer and mod them/tailor them to my needs, every penny counts. I am grateful!
  22. L

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    Can you link the adapter?
  23. L

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    If Mishimoto warranties mine, I will just sell it and put a stock one back in.
  24. L

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    It needs more diagnostics, but it looks cracked to me. No leaks from hoses. No coolant stains starting from any hoses. But this area of the radiator is saturated orange and i see fluid underneath. Smelled coolant for weeks.
  25. L

    6.2 swap thread

    No cold start noise, dead quiet.

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