T1 6.2 letdown?

[SILVER SLED]

My 15 5.3 6speed ccsb LTZ could beat a crew ram and I also could beat my brothers 5.7 biggest cab Tundra.   Unless the new Rams are a lot quicker for some reason that video just doesn’t make sense.  I think even magazine tests had equivalent 5.3 Silverados and 5.7 Rams running super close with the Silverado being a tad quicker.   If nobody would have said the GMC had a 6.2 I would have assumed it had a 5.3.  I’ve driven a new 5.3 Silverado 8 speed and it seemed quicker than my 15 5.3 did, not much but definitely a tad quicker.  

[KARNUT]

My 15 5.3 6speed ccsb LTZ could beat a crew ram and I also could beat my brothers 5.7 biggest cab Tundra.   Unless the new Rams are a lot quicker for some reason that video just doesn’t make sense.  I think even magazine tests had equivalent 5.3 Silverados and 5.7 Rams running super close with the Silverado being a tad quicker.   If nobody would have said the GMC had a 6.2 I would have assumed it had a 5.3.  I’ve driven a new 5.3 Silverado 8 speed and it seemed quicker than my 15 5.3 did, not much but definitely a tad quicker.  

Just between you and me. I’ve outrun a few 6.2s and Rams with my 14 GMC 5.3 on E-85 and a hypertec caned tune. My two brothers and nephew have Rams. A couple of friends have Denalis, my son had a Denali SUV. Keep it between us, ok. Gearing, weight and tuning play a big roll.


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[SILVER SLED]

41 minutes ago, KARNUT said:

Just between you and me. I’ve outrun a few 6.2s and Rams with my 14 GMC 5.3 on E-85 and a hypertec caned tune. My two brothers and nephew have Rams. A couple of friends have Denalis, my son had a Denali SUV. Keep it between us, ok. Gearing, weight and tuning play a big roll.


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I’m calling you out.   Lol.  

[KARNUT]

I’m calling you out.   Lol.  

That was two rides ago, I get bored easy.


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[GMC-AT]

I know I will probably miss my 2016 w/ 6.2 - tune/intake ... that thing shifts perfect and will melt the tires.  But I'm getting old, don't tow anything and tired of feeding the 6.2 premium gas... so back to 5.3 in 2019. 

[KARNUT]

I know I will probably miss my 2016 w/ 6.2 - tune/intake ... that thing shifts perfect and will melt the tires.  But I'm getting old, don't tow anything and tired of feeding the 6.2 premium gas... so back to 5.3 in 2019. 

Can you tune it to run on reg gas? When I did a job for a company in 07 they supplied a gas card. It would only allowed reg gas. At the time I was driving a Trailblazer ss, which recommended premium gas. I ran reg gas for 30K miles that summer. It didn’t harm it. I did keep my foot out of it, that was hard but I did it.


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[NWI Denali]

4 minutes ago, KARNUT said:

Can you tune it to run on reg gas? When I did a job for a company in 07 they supplied a gas card. It would only allowed reg gas. At the time I was driving a Trailblazer ss, which recommended premium gas. I ran reg gas for 30K miles that summer. It didn’t harm it. I did keep my foot out of it, that was hard but I did it.


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As long as the knock sensors are doing their job, you can run an L86 on 87 octane. I wouldnt advise it, but you certainly can

 The ECU should pull timing accordingly and you will be way down on power.

[KARNUT]

As long as the knock sensors are doing their job, you can run an L86 on 87 octane. I wouldnt advise it, but you certainly can
 The ECU should pull timing accordingly and you will be way down on power.

GM should tune them to be able to run on all gas available. I remember a friend who had a turbo mustang in the 80s. It had a switch on the dash for reg gas or premium gas. The power difference was noticeable.


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[lt1z]

What a bunch of whiny bitches. Have any of you speculators actually driven a T1 6.2? Or even a K2 6.2 for that matter? I feel like the comments are all coming from the GMT 800 crowd.

[M1ck3y]

Makes sense to me. 2014 6.2 (6 spd) 0-60 is 5.4. 2015+ 6.2 (8spd) 0-60 is 5.7. 19's with the 10 spd will be skipping gears? Takes longer to make the shift.

 

*edit*

 

It takes some time for the 6.2 to wake up. I think gm built something into the tuning.

[SILVER SLED]

1 hour ago, lt1z said:

What a bunch of whiny bitches. Have any of you speculators actually driven a T1 6.2? Or even a K2 6.2 for that matter? I feel like the comments are all coming from the GMT 800 crowd.

Is that you Matt?

[RyanbabZ71]

2 hours ago, GMC-AT said:

I know I will probably miss my 2016 w/ 6.2 - tune/intake ... that thing shifts perfect and will melt the tires.  But I'm getting old, don't tow anything and tired of feeding the 6.2 premium gas... so back to 5.3 in 2019. 

I am curious to the difference between my 2010 6.2 and 2019 6.2.  I am trying to stay away from driving one but I may go soon.......  My son told my wife today that I am getting a new truck in 5 months.  I have never set a timeline other than maybe next year.  Want a TrailBoss with 6.2 but thats not an option (yet).  Not fully sold on an AT4 looks wise.  

[lt1z]

Is that you Matt?

Yep lol

[Dawgfan675]

I got my Sierra AT4 2 days ago and the 6.2 is certainly impressing me so far. I had a 2015 Silverado 6.2 w/the (terrible) 8 speed. This truck feels like a beast 

[SILVER SLED]

12 minutes ago, lt1z said:

 

Yep lol

 

It’s me John, SLOWHITE from TBSSOwners.  You sold me your MIT intake tube.  So you got a new truck huh?