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T1 6.2 letdown?

NWI Denali

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pronstar Enthusiast

pronstar

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The Corvette uses a torque tube and transaxle set up, the Camaro features a standard style transmission that bolts directly to the engine. The reason the Vette uses a transaxle is to distribute the weight more evenly throughout the car. With the C7 platform they managed to achieve a 49-51% weight split biasing the rear, which is a remarkable achievement for a front engine car with a large V8. Makes me wonder about the purpose of the mid-engine car a little. There is no transaxle version of the 10L90 as of yet. 

 

Front/rear balance is only part of the equation.

 

The polar moment of inertia for a mid-engine car is much smaller, so the car will turn better.

 

Basically, placing heavy components closer to the center of mass makes the car less resistant to rotating [emoji106]

 

 

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L86 All Terrain Senior Enthusiast

L86 All Terrain

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15 minutes ago, pronstar said:

 

Front/rear balance is only part of the equation.

 

The polar moment of inertia for a mid-engine car is much smaller, so the car will turn better.

 

Basically, placing heavy components closer to the center of mass makes the car less resistant to rotating emoji106.png

 

 

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A 40/60 is considered "perfect" like most mid-engine cars. But growing up in muscle cars and trucks my idea of perfect is 50/50. The Corvette has always been a beast of a car, one that takes time to learn how it will reward you or kill you. By taking away from its animalistic nature sort of defeats the purpose of a sportscar in my mind. I want a car to drive me as much as I drive it, if you get what I am saying. Mid engine will be too tame are composed to be a Corvette. I almost feel the C8 should not wear a Corvette badge other than the fact Zora always dreamed of one. I hope they still offer a manual trans, pushrod, ft-engine Corvette for the rest of time. The new car will be quick, but will it be better than the ZR1 on the first kick at the cat? I remember the Pontiac Fiero. lol Cheers.

 

Anyways back to thread, the new 6.2L is not a let down because it didn't really change from the L86. People cant honestly expect them to run an engine for 5 years before a complete redesign, if you aren't happy with 420hp then buy a Procharger. They wont be doing the LS1, LS2/6, LS3 update thing with these engines like the old C5 Corvettes. If they do, the cars will get the power bump, not pick up trucks.  

NWI Denali Enthusiast

NWI Denali

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16 hours ago, L86 All Terrain said:

Anyways back to thread, the new 6.2L is not a let down because it didn't really change from the L86. People cant honestly expect them to run an engine for 5 years before a complete redesign, if you aren't happy with 420hp then buy a Procharger. They wont be doing the LS1, LS2/6, LS3 update thing with these engines like the old C5 Corvettes. If they do, the cars will get the power bump, not pick up trucks.  

I think you missed the main point of the thread. The new 6.2 appears to be slower than the outgoing L86 in the K2's, which even weighed a couple hundred lbs more on top of it.

L86 All Terrain Senior Enthusiast

L86 All Terrain

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4 hours ago, NWI Denali said:

I think you missed the main point of the thread. The new 6.2 appears to be slower than the outgoing L86 in the K2's, which even weighed a couple hundred lbs more on top of it.

10 speed trans perhaps? But the 10 speed made both the ZL1 and Mustang GT faster so I cant see that being the reason. At the end of the day it is a pick-up, they aren't meant to be fast, albeit a bonus, they are intended to have to power to work. The 2014 K2 6.2L with the 6L80e were faster in the 1/4m than the 2015+ 6.2L with the 8L90e. I have a 6.2L, its great, it is quick, more power than I need, but do I think its a let down that the T1 will run a 13.9 and the K2 will run a 13.7? Not at all. Buy a Camaro or Corvette if a 13 second pick up truck is not quick enough. V8 sports cars of the mid 2000's weren't even running these times, I would say we are pretty spoiled being around the 400hp mark and getting 17mpg. 

JacobC1983 Enthusiast

JacobC1983

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Running errands in my 2019 6.2L and 10 speed today.  All I could think was..... damn this thing feels 0.3 seconds slower in the quarter mile.  GOD DAMN IT.  I would gladly take my old truck back with its awful 8 speed transmission clunk and rear end slip yolk clunk noises and the vibration issue just to get back that 0.3 seconds.  By the way, if anybody wants my 2017 it is up at Laura GMCs used lot.  It hauls ass.

GMC-AT Senior Enthusiast

GMC-AT

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I would like to see the difference comparing the 2019 -  5.3, 8 speed vs 6.2, 10 speed. 

I bet it's not that much... 

NWI Denali Enthusiast

NWI Denali

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11 hours ago, GMC-AT said:

I would like to see the difference comparing the 2019 -  5.3, 8 speed vs 6.2, 10 speed. 

I bet it's not that much... 

^this. Im betting it would be only 1 truck length.

KARNUT Senior Enthusiast

KARNUT

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Posted

I would venture to say in most cases people have noticed over the years the need to plant your foot to get your vehicle moving isn’t required like in years gone by. I haven’t owned a vehicle in awhile that if I did my traction control light would flash. In this example it appears the best launch won regardless of horsepower. Unless you’re pulling or putting bigger tires on the bigger engines aren’t needed unless for bragging rights.


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GMC-AT Senior Enthusiast

GMC-AT

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you better plant your foot to get a 6.2 truck going. They have the secondary "notch" at the bottom of the pedal. This could be part of the issue, as most people that drive for the first time don't realize this until they really push down on the pedal. 

 

I had a 2014 with 5.3 ... traded and got a 2016 with 6.2.  I remember the first few days I was thinking the new truck didn't seem that much faster... that was until I really pushed down hard on the pedal and discovered the magical "notch". 

NWI Denali Enthusiast

NWI Denali

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5 hours ago, GMC-AT said:

you better plant your foot to get a 6.2 truck going. They have the secondary "notch" at the bottom of the pedal. This could be part of the issue, as most people that drive for the first time don't realize this until they really push down on the pedal. 

 

I had a 2014 with 5.3 ... traded and got a 2016 with 6.2.  I remember the first few days I was thinking the new truck didn't seem that much faster... that was until I really pushed down hard on the pedal and discovered the magical "notch". 

I discovered that detent after I did the gas pedal flex mod, and i actually thought it my pedal was binding up on something after i put the shim in. Then I started googling things and found there is actually a section in the owner's manual about the kickdown detent on the 6.2. Odd that only the 6.2 has it and not the 5.3.

HondaHawkGT Senior Enthusiast

HondaHawkGT

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On 11/3/2018 at 7:24 AM, JacobC1983 said:

I have also owned both 6.2 with the 8 speed and 10 speed.  The power and 0-60 times feel identical in the butt dyno, except the 10 speed doesn't clunk when I slow back down to a stoplight.

The 10-speed clunks on downshifts in the 2018+ F-150's so there's no guarantee it won't affect some GM 10-speed trucks too.

JacobC1983 Enthusiast

JacobC1983

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7 hours ago, HondaHawkGT said:

The 10-speed clunks on downshifts in the 2018+ F-150's so there's no guarantee it won't affect some GM 10-speed trucks too.

Well I have one.  So I actually have experience driving one for several thousand miles. And the 10 speed in my newest GM truck is far and away better than any 8 speed I have driven in the last gen GM trucks, including my own 6.2 8 speed and all the service loaner 8 speeds I had to drive while mine was supposedly getting fixed.  You just seem to like to be negative about vehicles you have no experience driving.

 

 

SnakeEyeSS Senior Enthusiast

SnakeEyeSS

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We know it has a tad less torque, but it's lighter and has a transmission that is similar in shifting speed. It's faster yes, on the cars(barely, so  far the 2019 SS it's only shown to be .1 second than the 8 speed)but is different programming due to trucks.

 

But a bit less peak torque shouldn't be .3 slower with less weight. It has to be the powerband, or in some software, I'd  to see a power grapha side by side with the the older 6.2, but it may come down to stability or torque management being more aggressive, although the engine programming may be laid back a bit to get better CAFE numbers. All the software side of things will come to light after tuners figure it out

HondaHawkGT Senior Enthusiast

HondaHawkGT

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Posted
8 hours ago, JacobC1983 said:

Well I have one.  So I actually have experience driving one for several thousand miles. And the 10 speed in my newest GM truck is far and away better than any 8 speed I have driven in the last gen GM trucks, including my own 6.2 8 speed and all the service loaner 8 speeds I had to drive while mine was supposedly getting fixed.  You just seem to like to be negative about vehicles you have no experience driving.

 

 

Awesome I'm happy for you. Just pointing out that the Ford/GM 10-speed has had plenty of complaints for hard downshifts and clunks when approach a stop too.

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