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Sierra RST Stock 4.8L Turbo: 617HP/623TQ

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Old Jul 16, 2010 | 09:11 AM
  #41  
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I might have missed it . .

What size turbo
what's your fuel setup ?
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Old Jul 17, 2010 | 04:52 PM
  #42  
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Turbo: 67mm AKA MP70 in a garret .81 a/r t4 exhaust housing,

Fuel: return style, E85, dual walbro 255, 8an feed, ls1 rails, 1 to 1 regulator.
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Old Jul 19, 2010 | 03:39 PM
  #43  
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Wow so just a cam, fuel system, and turbo kit. Very nice seems to make good power everywhere not just peak numbers
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Old Jul 19, 2010 | 06:27 PM
  #44  
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how much longer you really think bottom end will last though? i mean no doubt the crank will hold but i think piston rings should be about on their way out after probably what 7 - 10k miles?
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Old Jul 20, 2010 | 12:11 PM
  #45  
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I really dont know. I've turned it down to about 13psi for daily driving. However, I've added more power since the dyno but thats for another thread. Just a little extra when used on kill mode.

I think a lot of it is driving style. I by no means take it easy, but I don't get crazy either with abuse. I'd say most times I take the truck out (daily) I will usually do a single gear pull to put a smile on my face and get a wink from the girlfriend. Then the rest the time is cruising.

Skyhighsami: the truck does pull good even out of boost, on E85 I added about 5 degree timing on the 1k-3k area and that really picked it up. I will say that at the 4k mark, its "game time" for power.

Last edited by foose04; Jul 20, 2010 at 12:25 PM.
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Old Jul 20, 2010 | 12:39 PM
  #46  
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That setup is sic bro.
Really diggin the 1g i had one too .Not a 10sec ride but, regardless that car was a blast to drive.
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Old Sep 23, 2010 | 06:33 PM
  #47  
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How much total timing are you running?
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Old Sep 23, 2010 | 09:28 PM
  #48  
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Who needs a 6.0???? Aernt you the one that has the vids of you racing a couple lightnings?
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Old Sep 24, 2010 | 08:47 AM
  #49  
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Maxgee, running around 16-17 timing from 4k+

Jeffrey, yeah I played with a couple of the local L's, good times.
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Old Sep 24, 2010 | 06:42 PM
  #50  
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I saw your turd bucket parked across from me a few weeks back at Crowfield CC. Looking good.
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