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

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ChevyTech77 Senior Enthusiast

ChevyTech77

Posted
Posted (edited)

Damn, you're getting better mileage than I do with my 5.3! :lol: I'm guessing my locking out 5th/6th gear in town is what kills me but it drives better that way.

 

Yup, If I lock out 5/6 gears in town it actually goes down to 11-13 mpg in town but I'm usually beating on it pretty good at the same time, as well. I live in a large city and only drive 4 miles round trip to work everyday too so I'm usually no better than 15 mpg on average.

Edited by ChevyTech77
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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

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gmyeah Enthusiast

gmyeah

Posted
Posted

sorry about the 1/2 commment. I had a feeling after I posted that...it was wrong. So this L9H 6.2 L guy is basically what some refer to as a heavy half.....right? This is the motor that that claims it can tow 10,500 lbs? Also, the mileage above.....what gears did you have in back. I ask because I have the 5.3L Z71 3.73 gears and I get 13.5-17.5 mpg. That 17.5 is if all the stars align with pure highway driving and no load. It's hard to achieve. A good overall number for me is 15.5.

ChevyTech77 Senior Enthusiast

ChevyTech77

Posted
Posted

The 6.2 L9H is offered in the NHT Max-Trailering package that is capable of towing 10,500 lbs, yes.

 

My truck is just a Z71 so I only have 3.42's.

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Stevens03 Senior Enthusiast

Stevens03

Posted
Posted (edited)

sorry about the 1/2 commment. I had a feeling after I posted that...it was wrong. So this L9H 6.2 L guy is basically what some refer to as a heavy half.....right? This is the motor that that claims it can tow 10,500 lbs? Also, the mileage above.....what gears did you have in back. I ask because I have the 5.3L Z71 3.73 gears and I get 13.5-17.5 mpg. That 17.5 is if all the stars align with pure highway driving and no load. It's hard to achieve. A good overall number for me is 15.5.

 

 

I have the NHT max trailer package with 3.73's and get 13-17mpg. Your 5.3L should do better than that :dunno:

Edited by Stevens11
music Senior Enthusiast

music

Posted
Posted (edited)

sorry about the 1/2 commment. I had a feeling after I posted that...it was wrong. So this L9H 6.2 L guy is basically what some refer to as a heavy half.....right?

 

The NHT "max tow pkg" adds ~300 lbs to the regular 7000 lb GVWR on a 4wd 1500 (7300 lb total), a 9.5 ring gear (vs 8.6), disc brakes, and a little stiffer spring set. It's a heavier rating, but the F150 is the only model that offers what I would really call a "heavy half"... since those are available with a GVWR of 8200 lbs (usually special order). The 2500HD has much heavier running gear (9600 lb GVWR), but it drives like a tank in comparison, and the 6.0 is less efficient than the 6.2 in a 1500.

Edited by music
  • Like 1
becker87 Senior Enthusiast

becker87

Posted
Posted

sorry about the 1/2 commment. I had a feeling after I posted that...it was wrong. So this L9H 6.2 L guy is basically what some refer to as a heavy half.....right? This is the motor that that claims it can tow 10,500 lbs? Also, the mileage above.....what gears did you have in back. I ask because I have the 5.3L Z71 3.73 gears and I get 13.5-17.5 mpg. That 17.5 is if all the stars align with pure highway driving and no load. It's hard to achieve. A good overall number for me is 15.5.

 

 

In town i typically get 13-13.5 and on the highway i have gotten a worst of 13.8(driving 75 in the wind) and a best of 21(driving 55 mostly through flat ground and a few rolling hills) Driving around 75 I usually see 16-17.

ajensen383 Enthusiast

ajensen383

Posted
Posted

In town i typically get 13-13.5 and on the highway i have gotten a worst of 13.8(driving 75 in the wind) and a best of 21(driving 55 mostly through flat ground and a few rolling hills) Driving around 75 I usually see 16-17.

 

 

I get about the same as becker .. I just came back from a 200 mile trip doing 70-75 and averaged 16.5 mpg...In the fall I took a highway trip babying it at about 60 and was getting 21 as well.. It all depends on how you drive it... I drive 6 miles to work each way and now in the cold weather I am getting 14.5 or so , but in the summer I was consistently getting 16.5-17... To get decent mileage out of the 6.2 requires a disiplined driver. It likes to eat... With my 2002 with 5.3L It really didnt matter too much how I drove it ,the mileage wouldnt change that much, no matter how I drove it, it would always get between 16 and 17...With the 6.2 beating on it gets me high 13's- low 14's, but with driving like grandpa, I can easily get 16's around town and 19-20 highway.

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:

  • Like 1
MikeNH Senior Enthusiast

MikeNH

Posted
Posted

The Vortec Max is only the high output 6.0. The 6.2 doesn't have a special name.

EX-F150 owner Enthusiast

EX-F150 owner

Posted
Posted (edited)

That's what I thought. Wiki shows the 6.2L is labeled as a Vortec Max motor for our trucks

Edited by EX-F150 owner
MikeNH Senior Enthusiast

MikeNH

Posted
Posted

Well Wikipedia is edited by anyone and everyone so it isn't exactly a surprise that it's wrong every now and then.

becker87 Senior Enthusiast

becker87

Posted
Posted

Past weekend went on a 200 mile trip. On the way there going about 75 was getting around 15-15.5. On the way back driving 80 i was avereging 12.5. Not much wind either way. Not great numbers, speed kills mpg's, but it's a truck, i didn't buy it for great mileage, i bought the 6.2 for the POWER!!!

EX-F150 owner Enthusiast

EX-F150 owner

Posted
Posted

^^ Yes I am finding so far is that it seems my NHT likes to run around 55mph for a better gas mileage. Really, keeping the RPM at or around 1500 is good, much above that is bad HAHA

  • Like 1
becker87 Senior Enthusiast

becker87

Posted
Posted

^^ Yes I am finding so far is that it seems my NHT likes to run around 55mph for a better gas mileage. Really, keeping the RPM at or around 1500 is good, much above that is bad HAHA

 

 

I have driven around 55 and i get great mileage, but driving that slow KILLS me. I can drive 65 on highways but anything below 70 on interstate just seems so SLOW.

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