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S471 2011 Sierra dyno pull

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Old Oct 7, 2017 | 05:16 AM
  #1  
fctry286's Avatar
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Default S471 2011 Sierra dyno pull

Finally nailed everything down, got the truck dialed and made some decent pulls. Kind of bummed was hoping for more but I'll keep pushing. We were having issues loading the dyno so we could hit my boost numbers.

Specs.
BW s471 on 13ish pounds- I'm using a turbo smart eboost street.
CamMotion custom grind thanks to @Vortec350ss
WCCH custom head work
Holley mid rise intake manifold
Mishimoto race intercooler
Huron speed hot pipes
Tuned on HP Tuners by me.
60lb injectors
Stock fuel pump
Stock convertor

Like I said, we had issues loading the dyno and I could only make a solid 11.5 blipping 12psi good pull. Here is the sheet.



dyno is a DynoCom. I was running 13deg of timing at 11.5-11.7 afr around 70% injector duty cycle with fuel injector connection 60lb BOSCH.

Once I can find a solid drop in fuel pump for this truck I'll do bigger injectors and go E85 and turn it up.
Unfortently I need a new locker, I chipped some teeth on the factory one.

I just want a solid 600rwhp or little more not picky, I'm sure it's there now or close at 13lbs of boost.

Last edited by fctry286; Oct 7, 2017 at 05:26 AM.
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Old Oct 15, 2017 | 11:30 PM
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What are the specs on the turbo? T6?

I bet the holley is leaving some on the table compared to a TBSS intake, it is also definitely not helping in stop and go traffic in regards to IATs. Those intakes get god damn hot.

Id also suggest running a meth kit. Progressive kit that comes on at 5psi.
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Old Oct 15, 2017 | 11:57 PM
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Originally Posted by ls1_chevelle
What are the specs on the turbo? T6?

I bet the holley is leaving some on the table compared to a TBSS intake, it is also definitely not helping in stop and go traffic in regards to IATs. Those intakes get god damn hot.

Id also suggest running a meth kit. Progressive kit that comes on at 5psi.
The turbo is a 7174 T4 1.00
I am going e85 after I do the locker and my new radio lol.
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Old Oct 16, 2017 | 12:28 PM
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What heads do have on that engine?
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Old Oct 16, 2017 | 10:11 PM
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Originally Posted by 1FastBrick
What heads do have on that engine?
they are the 799 heads.
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