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

[michigan2500hd]

Anyone know what a stock 6.2 ( truck) is doing the quarter in?..I'm hearing 14.9 to 15.9. Thought the hemis were running high 15's already..before they bumped the horsepower up in the ram.

[Stevens03]

high 13's low 14's

 

Edit:

Every time slip I've seen has been with 3.42 gears. I'd suspect that having 3.73's gears would get you a solid high 13's.

Edited December 8, 2011 by Stevens11

[michigan2500hd]

That's sounds much better ..love this thread. It has a lot of info I study when I have time..thanks to all!

[ChevyTech77]

Best time I've netted so far with mine is a 14.6 at 96.3 mph. That's traction control off and the rear tires (factory Z71 18's) rolling in smoke for the first 20-30 feet. If I left the traction control on then yes, 15.8's easy. I'd love to get mine on a set of half bald Eagle LS's with some traction compound down in auto 4WD and see what it does. I'd be willing to bet if I could get it to hook instead of spin for half of the first 60' (60' times were HORRIBLE as you would guess, btw) it should pull down a good very high 13 or 14 flat time.

 

My buddies '11 Hemi/EX Cab/SB with factory 20's couldn't break into the 15's. 16.3 was his best.

Edited December 8, 2011 by ChevyTech77

[11Silvy]

Anyone know what a stock 6.2 ( truck) is doing the quarter in?..I'm hearing 14.9 to 15.9. Thought the hemis were running high 15's already..before they bumped the horsepower up in the ram.

 

 

I would say low 14's to mid 14's. Hemis are very high 15's and low 16's.

[Hankg42]

The L9H doesn't have AFM. Only the L99 does. He is however correct about the LS3 not having VVT or being E85 compatable.

 

 

Sorry for dragging this on... I recently bought a 2011 Sierra Denali. (L9H, right?) I was under the impression from all I had read that it has AFM. Was I incorrect? I hope so... I can do without the AFM, thank you.

[ChevyTech77]

Denali's got the L94 6.2 which DOES have AFM.

[Hankg42]

Denali's got the L94 6.2 which DOES have AFM.

 

Thank you. I still wish I didn't have the AFM.

[11Silvy]

If you want to remove the AFM, you can with a custom tune.

[obxdiver]

Denali's got the L94 6.2 which DOES have AFM.

 

My 2010 SD has the L9H motor w/o AFM

[ChevyTech77]

My bad, my eyes jumped down a few lines in the engine application roster. L94's were for 6.2 utility applications only so a Sierra Denali 1500 series, should have the L9H not the L94.

[Hankg42]

My bad, my eyes jumped down a few lines in the engine application roster. L94's were for 6.2 utility applications only so a Sierra Denali 1500 series, should have the L9H not the L94.

 

Well I think that's really good news for me! I also agree with 11Silvy. I plan on a custom tune soon, and if I had the AFM, I would have planned to have it removed. Thanks, again.

[obxdiver]

My bad, my eyes jumped down a few lines in the engine application roster. L94's were for 6.2 utility applications only so a Sierra Denali 1500 series, should have the L9H not the L94.

 

Thanks for checking. Yep, my build sheet says L9H engine

[ChevyTech77]

The best part is that I had the forcast '12 powertrain build/install sheet right in front of me when I was making that post. Oh well. LOL.

[EX-F150 owner]

Just received my decal today. Thanks 2010LTZ4x4 & Ryan for posting the info for it. Peter @ Top Flights helped me and got me the emblem 4 days after I sent payment! That's fast! Looks great!