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the first person to get an Edelbrock SC on a 6.2!

bass mechanic

By bass mechanic
in Engines & Drivetrain

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bass mechanic Enthusiast

bass mechanic

Posted
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I can say that if $7500 is going to be the price point, they are not the cheapest, about 20% more expensive actually.

i did not remember the price, he said it would be less than the kit for the stingray, i seem to recall about 500 less. so if you know what the stingray kit is you can figure it off of that.

i bet you guys don't deliver an installed kit for that? do you?

denalicrew Enthusiast

denalicrew

Posted
Posted

To anyone that can answer: What is the expected life of a stock 6L80 with that much power in front of it? I'm used to standard transmissions or Allisons behind forced induction vehicles. I had two GM vehicles come through my shop with 1900 magnachargers. Neither of them could get a 4L65 to last more than 20k miles. I know the 4L65 had plenty of problems behind stock engines, but is the 6L80 really much better?

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

That depends on the driver more than anything else. I have a 92 Chevy truck posted in the other rides section. The transmission in that lasted to 110 K miles. The engine got freshen at 80K. I had a modded trailblazer SS that went 80K, I was brutal on that.

 

 

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bass mechanic Enthusiast

bass mechanic

Posted
  • Author
Posted

To anyone that can answer: What is the expected life of a stock 6L80 with that much power in front of it? I'm used to standard transmissions or Allisons behind forced induction vehicles. I had two GM vehicles come through my shop with 1900 magnachargers. Neither of them could get a 4L65 to last more than 20k miles. I know the 4L65 had plenty of problems behind stock engines, but is the 6L80 really much better?

honestly i am not too concerned about it, first of all i live at 6500 feet elevation, the SC will get me about 25% more power than a stock truck at sea level, we loose so much power up here its nuts!

Crf450r420 Enthusiast

Crf450r420

Posted
Posted

After reading most of this, I think I went blind on page 11. The thing that gets you down the track is not peak torque or HP. You want power everywhere not just high peaks. These motors may only make a few more peak, but they make a lot more torque everywhere.

Here is my all stock truck at like 10 feet above sea level. It sure is way fatter than I tune the Gen IV motors.

20140516 112013

Last has anyone noticed the difference in the LS9 dyno on GM Performance site and the LT4 dyno released? The LS9 makes only about half the torque at 3800 rpm of the LT4 at 1200 rpm.
bass mechanic Enthusiast

bass mechanic

Posted
  • Author
Posted

Do you think this is because of the variable cam timing? Or the direct injection?

 

 

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thetruck454 Enthusiast

thetruck454

Posted
Posted

Its the direct injection allowing a higher comp ratio ( 10:1 vs 9:1), and I bet boost earlier due to the smaller blower (1740cc/rev vs 2300cc/rev).

 

I don't "think" there is a more aggressive cam due to having to deal with afm on the lt4

Sooperdave Enthusiast

Sooperdave

Posted
Posted

 

After reading most of this, I think I went blind on page 11. The thing that gets you down the track is not peak torque or HP. You want power everywhere not just high peaks. These motors may only make a few more peak, but they make a lot more torque everywhere.

Here is my all stock truck at like 10 feet above sea level. It sure is way fatter than I tune the Gen IV motors.

She is strong! Nice numbers.. 100% agreed.. Power under the curve is where this engine shines.

 

Its the direct injection allowing a higher comp ratio ( 10:1 vs 9:1), and I bet boost earlier due to the smaller blower (1740cc/rev vs 2300cc/rev)

I think the CR is higher... like in the 11.5??

Sooperdave Enthusiast

Sooperdave

Posted
Posted

To anyone that can answer: What is the expected life of a stock 6L80 with that much power in front of it? I'm used to standard transmissions or Allisons behind forced induction vehicles. I had two GM vehicles come through my shop with 1900 magnachargers. Neither of them could get a 4L65 to last more than 20k miles. I know the 4L65 had plenty of problems behind stock engines, but is the 6L80 really much better?

Guys with G8's are making some insane power and the trannys are holding pretty decent. One here locally runs low 10's on stocker unit but with a stall. No doubt they are stronger than any of the 4spd trannys.

thetruck454 Enthusiast

thetruck454

Posted
Posted

 

I think the CR is higher... like in the 11.5??

That is the lt1 in the base vette, they dropped the cr a bit for the lt4

thetruck454 Enthusiast

thetruck454

Posted
Posted

Guys with G8's are making some insane power and the trannys are holding pretty decent. One here locally runs low 10's on stocker unit but with a stall. No doubt they are stronger than any of the 4spd trannys.

.

 

I think a toothpick is stronger that the old 4l60/4l65 lol

Chris Senior Enthusiast

Chris

Posted
Posted

Its the direct injection allowing a higher comp ratio ( 10:1 vs 9:1), and I bet boost earlier due to the smaller blower (1740cc/rev vs 2300cc/rev).

 

I don't "think" there is a more aggressive cam due to having to deal with afm on the lt4

10:1 is low. Hell my old gen 3 has a stock CR of 10.1:1. The DI motors run over 12:1

thetruck454 Enthusiast

thetruck454

Posted
Posted

10:1 is low. Hell my old gen 3 has a stock CR of 10.1:1. The DI motors run over 12:1

GM kept the cr on the gen v small blocks kinda low for DI. Not sure if it was due to emissions or cylinder pressure or what.

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