Jump to content

6.2L (L9H) Owners - Get all your questions answered here

RyanbabZ71
 Share

Recommended Posts

EX-F150 owner Enthusiast

EX-F150 owner

Posted
Posted

When I do drive my truck to work the speed limit is 45-55. There are too many cops on my route to go much faster than that. I still only have 5K miles on my truck

  • Replies 1k
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

DanMan_S
DanMan_S

This is a video showing how the 6.2L sounds with headers and a corsa catback. The crew cab is my 6.2L, the 2005 extended cab is a 5.3L with a magnaflow muffler welded in.    

gonzoid
gonzoid

finished product  

2010LTZ4x4
2010LTZ4x4

Where did you get the 6.2L badge in you avatar?  Heres the info for the 6.2L badge Top Flight Reproductions is proud to announce the addition of the 6.2L emblem to our emblem product line. This embl

Posted Images

DonnyStevens Enthusiast

DonnyStevens

Posted
Posted

Hey guys, the first thing on the list is an intake. I know I want a K&N but is there much of a difference in the series. For those of you who have them, what series did you go with? My mechanic friend I go to for everything says 57 series but I wanted some outside info. Thanks.

Big_D Enthusiast

Big_D

Posted
Posted

Hey guys, I got my new sierra a week ago. The 6.2 is amazing and so is the knowledge gained in these threads. First on the list is a K&N intake and a Magnaflow exhaust. After that a custom tune from Nelson this summer, because I can't get a response from BlackBear. Still in the break-in stage and still haven't really got on the gas :nono:

 

 

i got on the gas from day 1. i read about the hard break-in, and it makes sense to me, supposed to seal the rings better initially. Controversial but figured i would give it a shot. currently @2500k with no issues,

http://www.mototuneusa.com/break_in_secrets.htm

http://www.crateenginedepot.com/Start-up-and-Brake-In-Procedures-W106C46.aspx

DonnyStevens Enthusiast

DonnyStevens

Posted
Posted

Hey guys, I got my new sierra a week ago. The 6.2 is amazing and so is the knowledge gained in these threads. First on the list is a K&N intake and a Magnaflow exhaust. After that a custom tune from Nelson this summer, because I can't get a response from BlackBear. Still in the break-in stage and still haven't really got on the gas :nono:

 

 

i got on the gas from day 1. i read about the hard break-in, and it makes sense to me, supposed to seal the rings better initially. Controversial but figured i would give it a shot. currently @2500k with no issues,

http://www.mototuneu..._in_secrets.htm

http://www.crateengi...es-W106C46.aspx

 

Thanks for the links, I read them both. I can defiantly say I am too scared to break it in by running it hard. It makes sense, but I just can't do it haha :uhoh:

ChevyTech77 Senior Enthusiast

ChevyTech77

Posted
Posted

Wouldn't waste my money on an intake or exhaust mods for this engine as the two factory installed systems are about as good as it gets already.

 

You guys getting 12.5 mpg at 80 mph must be somewhere really cold, your truck is an NHT build or you have some mods done to it that have affected your mileage (tires/wheels/etc) because mine will still pull down 16 mpg flat at 80 in 35 degree weather but I'm just a Z71 and all stock so....... :dunno:

11Silvy Enthusiast

11Silvy

Posted
Posted

Leave the exhaust alone unless you are doing headers and muff(factory exhaust is awesome). I have ARH headers on mine now with a magnaflow 3.5" muff and it really runs like it should. Lots of low end torque that wasn't there before and overall it breathes better and revs faster with the addition of long tubes.

vettelovralexand Enthusiast

vettelovralexand

Posted
Posted

Leave the exhaust alone unless you are doing headers and muff(factory exhaust is awesome). I have ARH headers on mine now with a magnaflow 3.5" muff and it really runs like it should. Lots of low end torque that wasn't there before and overall it breathes better and revs faster with the addition of long tubes.

 

 

What part number?

11Silvy Enthusiast

11Silvy

Posted
Posted
Leave the exhaust alone unless you are doing headers and muff(factory exhaust is awesome). I have ARH headers on mine now with a magnaflow 3.5" muff and it really runs like it should. Lots of low end torque that wasn't there before and overall it breathes better and revs faster with the addition of long tubes.
What part number?

 

Magnaflow #12909

ARH long tube headers 1-3/4" with cats and y pipe.

tmoney82 Enthusiast

tmoney82

Posted
Posted

Wouldn't waste my money on an intake or exhaust mods for this engine as the two factory installed systems are about as good as it gets already.

 

You guys getting 12.5 mpg at 80 mph must be somewhere really cold, your truck is an NHT build or you have some mods done to it that have affected your mileage (tires/wheels/etc) because mine will still pull down 16 mpg flat at 80 in 35 degree weather but I'm just a Z71 and all stock so....... :dunno:

 

Any difference between the new 6.2 and say 07-10 6.2?
2010LTZ4x4 Enthusiast

2010LTZ4x4

Posted
Posted

Wouldn't waste my money on an intake or exhaust mods for this engine as the two factory installed systems are about as good as it gets already.

 

You guys getting 12.5 mpg at 80 mph must be somewhere really cold, your truck is an NHT build or you have some mods done to it that have affected your mileage (tires/wheels/etc) because mine will still pull down 16 mpg flat at 80 in 35 degree weather but I'm just a Z71 and all stock so....... :dunno:

 

Any difference between the new 6.2 and say 07-10 6.2?

 

I believe that there is a difference in the 07-09 and the 2010 -present. I'm sure someone will chime in but I think it has something to do with AFM like the 5.3's have.

EX-F150 owner Enthusiast

EX-F150 owner

Posted
Posted

 

I don't believe the 6.2L was available until 2009. Prior to that it was the 6.0 and I do know the 2008 did have AFM. I may be wrong, but I don't think there is any difference between the 6.2L from 2009 to current.
RyanbabZ71 Senior Enthusiast

RyanbabZ71

Posted
  • Author
Posted

Correct in the Pickups the 6.2 was available 09-current

 

The SUV's had the 6.2 starting in 07.

Coolmaker Enthusiast

Coolmaker

Posted
Posted

I just got my 6.2, last week, honestly don't feel like it needs any upgrades. It is a beast.... Love it....

 

BTW- 2012 GMC 1500 Sierra SLT with NHT package

  • Like 1
04SILVRADO Enthusiast

04SILVRADO

Posted
Posted

When I do drive my truck to work the speed limit is 45-55. There are too many cops on my route to go much faster than that. I still only have 5K miles on my truck

 

 

Plus all the speed camera's that are popping up everywhere!!!

EX-F150 owner Enthusiast

EX-F150 owner

Posted
Posted

When I do drive my truck to work the speed limit is 45-55. There are too many cops on my route to go much faster than that. I still only have 5K miles on my truck

 

 

Plus all the speed camera's that are popping up everywhere!!!

 

Not sure how far you are from Fairfax,VA but if you've drivin through it you know what I mean.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • UrbanRage
      What have you done to your K2 today?

      By UrbanRage · Posted

      I have the same running boards on my truck and I do agree they are bulky. I also find myself stepping over them when getting in and out of the truck. Besides providing protection to the rocker panels, they aren't very useful.  I will be replacing them soon with the Amp Powersteps. 
    • ChristopherDobson
      Vehicle Payments

      By ChristopherDobson · Posted

      Monthly payment is only part of the equation. With today's prices and interest rates, I'd look at the total monthly cost: payment, insurance, registration, fuel, maintenance, and expected repairs. A vehicle that fits comfortably into your budget is usually the better choice than stretching for a higher trim. I've also kept my vehicles longer over the past few years. New cars have gotten expensive enough that driving one for 10+ years, while staying on top of maintenance, often ends up being the most cost-effective approach.
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      10 Ford and Chevy engines proven to reach 300,000 miles   You may note a common 3K OCI on this list of gas motors. I skipped over the diesels. Dh'O. 
    • jake111
      Gasser Subforum Has Been Quiet - - So, Regenerative Braking and Using L10

      By jake111 · Posted

      Thanks newdude!  By the time manual selection is needed, I'm probably too much of a control-freak to depend on the transmission sensing braking to activate automatic downshifting.  I would be anticipating the situation and already be manually downshifting.   This truck replaced a 2004.5 LLY diesel with the Allison 5-speed.  Putting it in T/H made noticeable differences (when the torque converter locked, upshift points, downshift behavior).  On this 2024 gasser with the 10L1000 I haven't been able to detect much, if any, difference.  Ok, I can never tell now when the torque converter locks up.  But I also don't notice differences in shifting.  For downhills, I've probably already manually downshifted by then anyway.  Since it's also more awkward (than the 2004.5) to engage/disengage I don't even bother.  Or maybe it doesn't really matter with just a 3k lb. camper in the bed?   Thanks also for the list of reasons the charging system might select various voltages.  However, what I am seeing doesn't fall into any of those categories.  It very definitely, and very consistently, rises after coasting/braking.  Maybe not immediately, but not very long after coasting/braking.  Very consistently drops voltage when no longer coasting/braking.  It might also be interacting with the camper battery charging (I might disconnect the camper and see if it changes the charging behavior).  I also need to recheck turning on headlights for when I want to force it to charge the camper.   Another JR, in June I converted the camper to LiFePO4.  Since it's not a good idea to try to charge lithiums directly using truck, I installed a Victron Orion XS DC-DC charger (which BTW is AMAZING!!).  Being cheap, I only had to buy that one item (besides the battery, of course) to do the conversion.  The camper OEM 120v battery charger (only 19 years old and works perfectly) and the truck feed the input to the DC-DC charger (not at the same time).  But I didn't want the camper charger feeding back to the truck so I kept the old separator.  I considered replacing the separator with a 30amp diode but that means more work and might add another 1/2 volt drop.  One thing that surprised me was the voltage drop over the long 10awg wire run, so I can only charge smoothly at 8 amps (because the DC-DC charger is completely configurable).  Another reason I don't want an added voltage drop with the diode.  I might also be a little lazy but all this work is being done under the sink with a small cabinet opening.    
    • davester
      cam upgrade in CA

      By davester · Posted

      apparently CA smog is (or at least was)  checking that the vehicle is using the oem and/or a ca smog approved tune, so I expect you'll fail inspection doing it.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...