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Predict the outcome...

Soush

By Soush
in Modifications & Accessories

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Soush Enthusiast

Soush

Posted
Posted

Hello Ladies and Gents

 

Got a 2014 single cab L83 Sierra. I've recently acquired the following parts and I'm currently having them fit on to later be put on for a dyno tune... 

 

What do you guys reckon I'll put out on the dyno? What max RPM do you recommend I ask the tuner to go with? What should my further installs be? 

 

Adding:

GPI stage 2 cam (stock converter) 

L86 intake and TB

CAI

Long tube 1 7/8 headers, 3 inch piping to a magnalfow muffler and out

And finally a dyno tune... 

 

Thanks

Soush Enthusiast

Soush

Posted
  • Author
Posted
22 minutes ago, Snowcamo said:

448hp 483tq

Dude i WIIIIISH

Soush Enthusiast

Soush

Posted
  • Author
Posted
4 minutes ago, flyingfool said:

60 hp boost maybe 80 extra hp

The tuner predicts around that too... ??

flyingfool Senior Enthusiast

flyingfool

Posted
Posted

CAI = 5 hp

exhaust 8 hp

long tubes 18 hp

cam 17 hp

6.2 manifold 4 hp

Power enrichment 25 hp

----------------------------------------------

you might hit 80 hp gain

keep us posted on what happens, on the whole, seems one is better off running  low bosst kit, your valve train last longer  cause there is less force on it if using stock cam, easily make 100hp with a 60mm turbo

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

I'd only go as far as like 6,200rpm depending on your valve springs and what the dyno curve looks like.

 

Aim for .85 to .88 lambda to keep it safe, maybe a tad leaner on E85.

 

Be careful about your driveshaft. It could explode on the dyno if you exceed 100+ mph.

flyingfool Senior Enthusiast

flyingfool

Posted
Posted

wonder if you  installed a cam limiter on the variable Cam , and disable the function in the ecu,  how much power is that worth 8-10 hp?? 

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
21 minutes ago, flyingfool said:

wonder if you  installed a cam limiter on the variable Cam , and disable the function in the ecu,  how much power is that worth 8-10 hp?? 

Curious. Why do you think that limiting the cam phaser makes more peak power than enabled? Not looking for an argument, perhaps and education.  

flyingfool Senior Enthusiast

flyingfool

Posted
Posted

it's quite possible I can imagine Variable camshaft can make power if the tuner knows what he's doing..  but GM and many other manufactuers like Mercedes has added the variable cam system as part of compliance with mandated emission improvements, not for added power.  

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
3 minutes ago, flyingfool said:

it's quite possible I can imagine Variable camshaft can make power if the tuner knows what he's doing..  but GM and many other manufactuers like Mercedes has added the variable cam system as part of compliance with mandated emission improvements, not for added power.  

True. However inlet valve closing angles pretty much dictate cylinder pressure at any given rpm. VVT enhances the width of the  torque band without compromising peak power. Honda kind' a led the change on VVT and for this point. Punch up the bottom without sacrificing the top. Just say' n. Give it a thought. Well Rhoades lifter were before Honda VVT but you have to be old to remember those guys. BTB they are still around. :) 

flyingfool Senior Enthusiast

flyingfool

Posted
Posted

yeah the Honda set up is designed for power band impovements on the little motors,  but I'm still researching GM's VVT system on our trucks. I believe the tuning in the ecu might be a bit wacky to take advantage of its power capability..still studying

 

i also belive you do not want to mix GM's VVT with an aftermarket stage 2 cam, because you will smack your valves up. this is why is deleted or Limited travel,

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