'23 6.2 meh performance

BB68 · May 11, 2023

I just recently traded in an 18 6.2 Silverado 8spd 3.23 gears for a 23 Sierra 6.2 10 spd 3.42 gears with Max Trailering. I test drove it very little and was generally just getting rid of the 8 spd before the warranty ran out. A few weeks after, our boat (pulled many times with the '18) was ready for pick up and on the tow home I needed to pass a few cars.. In which it just doesn't have the get up as the old '18 when you swing out for a pass... That 18 used to set you back in the seat this 23 just feels like a 5.3, I was really expecting the '23 to have much better mid range with the lower gears and 10 speed... Anyone else feel like they dont have the power they used to? If I had known it would be this lack luster I might have considered the diesel a little more.

EDIT If someone told me this was a second slower in the quarter mile vs the 18 i would believe them

Edited May 11, 2023 by BB68

reeseb · May 11, 2023

I didn't tow anything with either truck, but went from a 2020 5.3 8-speed to a 2021 6.2 10-speed and the 6.2 was noticeably quicker and had more torque.

KARNUT · May 11, 2023

20 minutes ago, BB68 said:

I just recently traded in an 18 6.2 Silverado 8spd 3.23 gears for a 23 Sierra 6.2 10 spd 3.42 gears with Max Trailering. I test drove it very little and was generally just getting rid of the 8 spd before the warranty ran out. A few weeks after, our boat (pulled many times with the '18) was ready for pick up and on the tow home I needed to pass a few cars.. In which it just doesn't have the get up as the old '18 when you swing out for a pass... That 18 used to set you back in the seat this 23 just feels like a 5.3, I was really expecting the '23 to have much better mid range with the lower gears and 10 speed... Anyone else feel like they dont have the power they used to? If I had known it would be this lack luster I might have considered the diesel a little more.

I’m spitballing here it goes. A few years ago I was reading car and drivers test with the 6.2 and the new 10 speed. The 0-60 actually slowed a bit. The speculated was that the tq management was slowing it down with more shifts more tq management. Perhaps depending on your speed and passing you drop multiple gears. While shifting back up through the gears at full throttle or near it. TQ management was de throttling to ease stress on the transmission. Love those nannies. I always wonder with the TQ range if all those gears was overkill.

BB68 · May 11, 2023

24 minutes ago, KARNUT said:

I’m spitballing here it goes. A few years ago I was reading car and drivers test with the 6.2 and the new 10 speed. The 0-60 actually slowed a bit. The speculated was that the tq management was slowing it down with more shifts more tq management. Perhaps depending on your speed and passing you drop multiple gears. While shifting back up through the gears at full throttle or near it. TQ management was de throttling to ease stress on the transmission. Love those nannies. I always wonder with the TQ range if all those gears was overkill.

I fully agree on more shifts = slower ET.

While towing/passing it down shifted once and hung out in that gear the entire pass. I dont know what gear that was as I am still getting used to this new display.

I will also agree the torque management system intervenes quite often. With the 18 if you took off from a stop sign at full throttle each time it shifted you could feel the throttle pulling back and also hear the tire stop squealing until it was fully in the next gear. I have not performed any stop sign acceleration test yet with the '23, will after a couple oil changes.

Badbird2000 · May 11, 2023

I just want to know where you found one with max two package! I'm looking for an RST with the 6.2 and max tow... within a few hundred miles of me.. no dice

ExYukon · May 11, 2023

I went from a 2010 Yukon Denali w/Max Trailering (6.2L, 6 speed) to a 2023 Silverado 1500 crew cab short bed w/Max trailering (6.2L, 10 speed). I tow a 7100 pound travel trailer. The new truck has 6000 miles, 1500 of that was towing.

I feel the new 6.2 is plenty strong. With the Yukon, I felt the need to use WOT somewhat often when towing. With the Silverado, I think I've used it maybe once. It just doesn't seem necessary. I think the additional gear ratios in the 10 speed help that perception.

Another difference I have noticed is the use of the top gear. Then Yukon would almost never drop into sixth gear when we are towing. It would usually be in fifth on flat ground. Both vehicles have 3.42 gears, and eighth in the 10-speed is the same ratio as fifth in the 6-speed, so I expected to mostly be in eighth. But it actually spends a fair amount of time in tenth.

The biggest challenge I've given the new truck was Raton pass (6700 feet to 7800 feet, so pretty mild) and it pulled like a champ with no drama. I'll hit the Eisenhower Tunnel in June.

f8l vnm · May 11, 2023

1 hour ago, BB68 said:

I fully agree on more shifts = slower ET.

But the shifts put you right back in the power band on a 10A vs 8A?

The T1 is heavier and has a bigger overall footprint so i would think it would be right around the K2 6.2s .

I also think the stock tires are also one diameter bigger on all models.

I have had 2 K2 6.2s and now my 2019 6.2 , they both feel pretty much the same to me. I mean its the same engine output so if there is a difference its very little .

I still cant believe we are going on 10 years with the same engine outputs.

BB68 · May 11, 2023

3 hours ago, f8l vnm said:

But the shifts put you right back in the power band on a 10A vs 8A? That only matters when you have a very short torque curve... these 6.2s are like a 454/8.1 as far as torque curve.

The T1 is heavier and has a bigger overall footprint so i would think it would be right around the K2 6.2s . Its probably close enough that I shouldnt be able to feel it.

I also think the stock tires are also one diameter bigger on all models. Same size tires on mine

I have had 2 K2 6.2s and now my 2019 6.2 , they both feel pretty much the same to me. I mean its the same engine output so if there is a difference its very little . This T1 6.2 is neutered compared to my 18 K2... I have hauled that boat all over with the K2 and know the feel. I believe torque management maybe over stepping its bounds here

I still cant believe we are going on 10 years with the same engine outputs.

see responses

BB68 · May 11, 2023

3 hours ago, ExYukon said:

I went from a 2010 Yukon Denali w/Max Trailering (6.2L, 6 speed) to a 2023 Silverado 1500 crew cab short bed w/Max trailering (6.2L, 10 speed). I tow a 7100 pound travel trailer. The new truck has 6000 miles, 1500 of that was towing.

I feel the new 6.2 is plenty strong. With the Yukon, I felt the need to use WOT somewhat often when towing. With the Silverado, I think I've used it maybe once. It just doesn't seem necessary. I think the additional gear ratios in the 10 speed help that perception.

Another difference I have noticed is the use of the top gear. Then Yukon would almost never drop into sixth gear when we are towing. It would usually be in fifth on flat ground. Both vehicles have 3.42 gears, and eighth in the 10-speed is the same ratio as fifth in the 6-speed, so I expected to mostly be in eighth. But it actually spends a fair amount of time in tenth.

The biggest challenge I've given the new truck was Raton pass (6700 feet to 7800 feet, so pretty mild) and it pulled like a champ with no drama. I'll hit the Eisenhower Tunnel in June.

2010 6.2 to LT6.2 is a big jump and I believe it does make more midrange power.

This '23 is adequate, just does have the mid range punch the '18 had. Right now I'm a little disappointed. Time will tell next month Ill have another 8 hour haul down to TRL, that will give some seat time in the mini mountains

BB68 · May 11, 2023

4 hours ago, Badbird2000 said:

I just want to know where you found one with max two package! I'm looking for an RST with the 6.2 and max tow... within a few hundred miles of me.. no dice

I missed out on a couple at Laura (like hours)... But I had a backup somewhat local and I found that they quit making them for a while so I took the plunge. Not as good good of deal but hopefully I'll have a place to fit me in if I have any repair needs

I went with GMC this time due to my distaste of current Chevy design.

Amcguy1970 · May 12, 2023

1 hour ago, BB68 said:

see responses

"That only matters when you have a very short torque curve... these 6.2s are like a 454/8.1 as far as torque curve. "

Are we looking at the same torque curve? The 8.1 has over 90% or its torque available around 1k rpm and peaks around 3k, it doesn't like to rev much and is similar to the old V8's making a ton more torque (which peaked way low) than HP and wasn't rev happy. The 8.1 makes peak HP just over 4k rpm, nearly 1500rpm lower than the 6.2. The 6.2 likes to rev, makes only 70% of its peak torque a little over 1k rpm and peaks the torque out over 4k rpm while HP goes all the way to 5600. The 6.2 in the trucks is very similar to the corvette/camaro motor (at the time), not exactly a stump pulling torque monster that 496 or 454 were known for. Gotta rev it to make its power.

This is why these smaller turbo motors are great, you get most all the goods of the torque way down low as can still make great power up top. Best of both worlds.

Tyler

BB68 · May 12, 2023

18 hours ago, Amcguy1970 said:

"That only matters when you have a very short torque curve... these 6.2s are like a 454/8.1 as far as torque curve. "

Are we looking at the same torque curve? The 8.1 has over 90% or its torque available around 1k rpm and peaks around 3k, it doesn't like to rev much and is similar to the old V8's making a ton more torque (which peaked way low) than HP and wasn't rev happy. The 8.1 makes peak HP just over 4k rpm, nearly 1500rpm lower than the 6.2. The 6.2 likes to rev, makes only 70% of its peak torque a little over 1k rpm and peaks the torque out over 4k rpm while HP goes all the way to 5600. The 6.2 in the trucks is very similar to the corvette/camaro motor (at the time), not exactly a stump pulling torque monster that 496 or 454 were known for. Gotta rev it to make its power.

This is why these smaller turbo motors are great, you get most all the goods of the torque way down low as can still make great power up top. Best of both worlds.

Tyler

Whoa buddy..... this thread is about a current '23 6.2 to my previous '18 6.2. Have you had any time behind the wheel of both?

alrockaz · May 14, 2023

I agree with you. I went from a 2017 6.2 to a 2020 6.2 and it feels like something is bound in the drivetrain, not allowing it to spin up as freely.

luke1333 · May 15, 2023

I agree, drove plenty of new 6.2 yukons & trucks and my 2020 5.3 feels almost the same. Older 14-18 6.2 felt like rawer power. The problem I think is the 6.2 is heavier by a good bit over the 5.3 and doesn't make a enough power to offset the weight difference or enough that you can noticeable feel

Edited May 15, 2023 by luke1333

dieselfan1 · May 15, 2023

30 minutes ago, luke1333 said:

I agree, drove plenty of new 6.2 yukons & trucks and my 2020 5.3 feels almost the same. Older 14-18 6.2 felt like rawer power. The problem I think is the 6.2 is heavier by a good bit over the 5.3 and doesn't make a enough power to offset the weight difference or enough that you can noticeable feel

I doubt there is much weight difference.