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10 speed vs 8 speed 6.2 L

WHITESSTOWPIG

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WHITESSTOWPIG Enthusiast

WHITESSTOWPIG

Posted
Posted

Anybody coming from a previous generation 6.2 feel like these trucks slowed down some with the new 10 speed ? I test drove a Sierra Denali and Escalade 6.2 which both of which felt alot slower than the previous gen with the 8speed did in a 200-300lb heavier truck.Thoughts ?

cltsig Enthusiast

cltsig

Posted
Posted

I had a 2016 Yukon Denail with the 8 speed and it felt a bit quicker than my 2019 Silverado 6.2.  Granted, I haven't been into it too much during break in.  The times I did get into it a little it responded and when I realized how fast I was going, I backed off.  I think they're as fast but just don't feel as fast.  Maybe less NVH compared to previous generations.  I believe it was C&D that tested a 6.2 in one of the trucks at 5.4 seconds compared to 5.8 for the last gen.  

WHITESSTOWPIG Enthusiast

WHITESSTOWPIG

Posted
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Posted

Interesting.I receive subscriptions from all of the major magazines and Car & Drivers numbers are always all over the place for some reason.In the latest Motortrend issue they compared all of the 2019 trucks from all the major makes on the same day.Those results seem to agree with my seat of pants about the 10 speeds when you factor in the differences weight

 

2016 Denali  6.2 8speed 5733lbs 0-60 in 5.8 1/4 in 14.2

2019  AT4   6.2 10speed 5466lbs 0-60 in 5.8 1/4 in 14.2

2019 Denali 6.2 10speed 5595lbs 0-60 in 6.0 1/4 in 14.4

2019   RST  5.3  8speed   5178lbs 0-60 in 6.6 1/4 in 14.9

 

 

  • 2 months later...
bcato Enthusiast

bcato

Posted
Posted

I should be picking up a 2019, 6.2 w/10speed tomorrow.   Currently have a 6.2 with the 8 speed.  I'll post up my opinion later.

j-ten-ner Senior Enthusiast

j-ten-ner

Posted
Posted

I don't think that the 10-speed is made for drag racing. After all, there are a few more shifts to be done to reach the desired speed.

It's more like for fuel economy WHEN you're using the truck as a truck and WHEN towing trailers AND boulevard cruising, which IMO is the new battle field for the higher end trucks.

 

so long

j-ten-ner

bcato Enthusiast

bcato

Posted
Posted

I've only got about 40 miles on my new one so far.  The 10-speed is a different animal than the 8-speed for sure.  I've always found it difficult to feel like a big/tall vehicle is fast anyway.   The extra gears definitely make it tougher to follow the shift points.   I did bear down on it just a bit, honestly it made me think of the allison transmission I had in my 2002 duramax.  To me, the duramax/allison seemed to shift at pre-defined speeds, not rpm when I was hard accelerating if that makes sense.

 

 

  • 4 weeks later...
sboden Enthusiast

sboden

Posted
Posted

The 10 speed is in the top of the line ZL1 Camaro with the 8 speed in the SS versions.  The amount of speeds doesnt necessarily dictate drag racing or mpg.  It is how it is programmed to shift.  The fastest production Camaro has a 10 speed.

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

It has to do with programming too. Some of the reviews I’ve read have the trucks slower with the 10 speed.


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  • 5 months later...
Nick2019AT4 Enthusiast

Nick2019AT4

Posted
Posted

I've got the 2019 AT4 6.2L 10 speed with performance package traded a 2017 Silverado LTZ 6.2L 8 speed. Had both dynoed, the LTZ made 365 hp, 390 tq, with GM's Borla exhaust and K&N Cold Air Intake, AT4 made 346hp 370tq, with there performance package, big difference. Changed to K&N Cold Air Intake on AT4 it made 360 hp 385 tq, GMs Cold Air Intake is GARBGE. And I gained about 3mpg. O, and I took the AT4 to the drag strip 1/8 mile, before filter change, 9.8, after filter change, 9.2, big difference here also, truck has about 9000 miles on it.

AgDoctor Senior Enthusiast

AgDoctor

Posted
Posted

I have a 17 6.2/8 speed crew AT and my wife has a 19 6.2/10speed crew AT4 and the 10 speed doesn't yet behave like my 8 speed does. The 10 speed is smoother and the shifts are precise and non-clunky thus far. It feels as quick as mine(pre-lift) and I was thinking maybe a touch quicker...not sure.

Her old ride was a Yukon Denali 6.2/8 speed. What I can tell you is the throttle map on the Yukon with 6.2 is more aggressive than the trucks. I'm sure so.eone who has owned or driven both can chime in.


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Billet Bowtie Enthusiast

Billet Bowtie

Posted
Posted
21 hours ago, Dominick Galizia it said:

I've got the 2019 AT4 6.2L 10 speed with performance package traded a 2017 Silverado LTZ 6.2L 8 speed. Had both dynoed, the LTZ made 365 hp, 390 tq, with GM's Borla exhaust and K&N Cold Air Intake, AT4 made 346hp 370tq, with there performance package, big difference. Changed to K&N Cold Air Intake on AT4 it made 360 hp 385 tq, GMs Cold Air Intake is GARBGE. And I gained about 3mpg. O, and I took the AT4 to the drag strip 1/8 mile, before filter change, 9.8, after filter change, 9.2, big difference here also, truck has about 9000 miles on it.

Good info. Thanks for sharing 

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