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

[ChevyTech77]

AC Delco only.

[PDYoung]

I was looking back at this thread and i didn't see where i had been on for a while since i bolted my headers ans supercharger on. Back in September i did get a chance to go to the track and lay down a pass. I got a 12.9 @ 106 with a 1.82 60ft . That was all wanted to know for right then. i knew i couldn't do anymore because the injectors were maxed. My ID 850's are in my hands so now i can get back to where i left off. I got Justin from Black Bear making me a tune for my new injectors and a smaller pulley to go on the supercharger. I think i'll add some meth injection after that.Then back to the track in the spring when it opens.

[SILVERADOSC540]

That's good stuff man. I've got nothin for ya.

[11hennesseysilverado]

hey guys, there's a seller on ebay called sickspeed performance that sells all sorts chrome badges, they have the 6.2L number in different colors. I bought one from them with the "AWD" instead of the 4x4 that my truck is and get lots of questions about it. the quality is great, i placed my awd emblem on the front grille. the 6.2L looks good on the hood in my opinion.

[VMaxtastic]

I'm now a proud owner of a 2013 GMC Sierra All terrain Pkg 6.2 L9H

I hit the gas, and smile every time

Edited March 2, 2013 by VMaxtastic

[GMCustomerService]

VMaxtastic,

Congratulations on your purchase! Let me know if any questions arise. Thank you.

 

Tricia, GM Customer Service.

[VMaxtastic]

Thanks Tricia!

[bogeypro]

Just wanted to say that my gas mileage has improved since my 6.2 has broken in. I am up to 16.1 mpg 80/20 city/highway. I always run 93 octane because my station does not carry 91. Mpg goes down noticeably when running 87 so I don't use it. It will go down during summer because I tow a 6500lb boat around. My previous 5.3 got about the same so it is a great trade off in my opinion.

[GasHog369]

Anyone know what involved in removing the tail pipe resonator on the 6.2L? I want a little more sound and bet it would be a good temp fix until i do full exhaust. Is the resonator clamped on? havent had a chance to look under it yet and inspect. thanx

[ChevyTech77]

Resonator is welded on.

[GasHog369]

Thanx, yea i was under there when i cut off the exhaust pipe to mount my tip and saw it.

[uh6tdrvr]

Has anyone had their truck tuned to run E-85? I thought at one point in time I had read somewhere someone had it specifically tuned for it and it did better on mileage I just cant find it anywhere. I would assume that if you did it for E85 you could still run 93 if E85 wasnt available.

I am wanting to ditch 09 with the 5.3 for the 6.2 in this body style. I like the new body style but Im just acustomed to this one and Im just hoping to get a good deal as soon as the 14's hit the lot.

[RyanbabZ71]

All I run is E85. It didnt require anything special tuning wise.

 

 

Ryan

[uh6tdrvr]

I was just wondering if it could be tuned to make E85 more efficient.

[EX-F150 owner]

All I run is E85. It didnt require anything special tuning wise.

 

 

Ryan

Why E85?