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2014 Sierra 6.2 Dyno

Jjblur2003

By Jjblur2003
in Engines & Drivetrain

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truckguy82 Senior Enthusiast

truckguy82

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2 hours ago, Jjblur2003 said:

There was still some timing we could pull and make more but since I tow we it was best to leave it

Torque actually looks pretty bad on the low end. Looks like it doesn’t start pulling until 3700ish.

 

definitely more up top though

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Jjblur2003
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Just for info. Had an afm lifter fail and broke a spring as well as bent a pushrod. Did the afm delete through texas speed. Installed trunion upgrade, tsp stage 2 truck cam. .635 .635 218 226. Paceset

Jjblur2003
Jjblur2003

This is not the vvt stage 2. Its the stage 2 under 5.3 cams. Its their truck stuff. Its confusing they list l86 cams with lt1 cams. I will post sheet if i can find it. Tons of torque

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Jjblur2003 Enthusiast

Jjblur2003

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9 minutes ago, truckguy82 said:

Torque actually looks pretty bad on the low end. Looks like it doesn’t start pulling until 3700ish.

 

definitely more up top though

Its because the pull didnt start until 3000 rpms. Its definitely got way more torque than stock. I asked the same thing. On a stock converter as well.

Denali34 Enthusiast

Denali34

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How were your dealings with LSXperts? I was considering them before going with Vengeance Racing. 

Jjblur2003 Enthusiast

Jjblur2003

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4 hours ago, Denali34 said:

How were your dealings with LSXperts? I was considering them before going with Vengeance Racing. 

Couldnt have been better. Communication was great. Just all around easy to deal with

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JONBLARC7 Enthusiast

JONBLARC7

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Posted

I have the same cam in my 2014 L86.  I had the head ported and a valve job by a local shop while I had them off.

 

I never dynoed it but if feels like it pick up all over.  I was just working on my 1-2 and 2-3 shift points and it was showing I was spinning all the way through 1st with 50% throttle applied.  This is with 115 pounds worth of 22x12 wheels and 33” tire.

 

 

i just pulled my 6800 pound wakeboat home yesterday and it holds gears better than the stock cam.  So it doesn’t lose any torque.

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JONBLARC7 Enthusiast

JONBLARC7

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Oh and I have my idol set to 735 and it feels stable.  I tried it lower at like 685 or something but it wasn’t stable at low speed on off throttle situation.  And would stall if you where try to back into a parking spot on a steep hill if you had to get on and off the throttle a bunch

Jjblur2003 Enthusiast

Jjblur2003

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2 minutes ago, JONBLARC7 said:

Oh and I have my idol set to 735 and it feels stable.  I tried it lower at like 685 or something but it wasn’t stable at low speed on off throttle situation.  And would stall if you where try to back into a parking spot on a steep hill if you had to get on and off the throttle a bunch

Yeah mine was set at 800 and it wanted to creep hard.lowered to 750 and its about perfect

JONBLARC7 Enthusiast

JONBLARC7

Posted
Posted
3 minutes ago, Jjblur2003 said:

Yeah mine was set at 800 and it wanted to creep hard.lowered to 750 and its about perfect

Mind if I ask what rpm are you shift at WOT?  I’m trying to get mine to shift at 6200

Jjblur2003 Enthusiast

Jjblur2003

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1 minute ago, JONBLARC7 said:

Mind if I ask what rpm are you shift at WOT?  I’m trying to get mine to shift at 6200

6000. It made peak hp at 5200

truckguy82 Senior Enthusiast

truckguy82

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Posted
2 hours ago, JONBLARC7 said:

Mind if I ask what rpm are you shift at WOT?  I’m trying to get mine to shift at 6200

The c7 vette, which the engine is identical, has a stock redline of 6500 rpm. So 6200 is no problem.

JONBLARC7 Enthusiast

JONBLARC7

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23 hours ago, truckguy82 said:

The c7 vette, which the engine is identical, has a stock redline of 6500 rpm. So 6200 is no problem 

 

Correct but if you have an early 2014 L86 with stock springs beware running it that high.  They had problems with valve springs breaking.  They had yellow paint on them.  They later switched to the valve spring with blue paint that was updated design.

Mozzer Enthusiast

Mozzer

Posted
Posted

Any way of knowing what valve springs we have prior to pulling (vin or engine numbers)

2014, 5.3, 4x4, work truck

Jjblur2003 Enthusiast

Jjblur2003

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4 hours ago, JONBLARC7 said:

 

Correct but if you have an early 2014 L86 with stock springs beware running it that high.  They had problems with valve springs breaking.  They had yellow paint on them.  They later switched to the valve spring with blue paint that was updated design.

Exactly. I thought I had an afm lifter failure. But it was a broke spring and bent pushrod. It happened while towing at 2500 rpms.

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