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nnbs 4.8 turbo?

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Old May 9, 2011 | 11:27 AM
  #11  
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Originally Posted by silverado1ss89
Does he have a front mount turbo?? Hoe many psi? That has n20 i'n the mix too right...
mid mount, under the cab 76mm

we are running 17psi now

he was running 12psi and using nitrous out of the hole to get that big truck moving with the long first gear.

on 12psi and a 80 shot it went 11.54

it went 11.9 on 12lbs alone the nitrous launch just cuts a better 60ft

we are gunna run it again soon, this friday probably with 28 inch slicks and 17psi only and see how it launches, if the 60ft is weak still we will give her a little juice again haha
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Old May 9, 2011 | 11:29 AM
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08s are easier to put 4l80's in,
you should swap on the stock manifolds if you go turbo and sell the headers.

the 3.73s would be a little agressive but should work out fine
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Old May 9, 2011 | 01:41 PM
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i could always downgrade to 3:42 or 3:23s.... is in youtube??? the truck running?
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Old May 9, 2011 | 01:54 PM
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what software ru using to tune the truck with a 4l80e.
Is hptuners supporting this drivetrain, for a while they were having problems since only vans came witht hose transmissions.
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Old May 9, 2011 | 06:38 PM
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just finished nbs 4.8 turbo build. best $7000 i ever spent. warning its very addicting tho.
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Old May 10, 2011 | 12:05 AM
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7k what did u buy lol.. Seriously what did u buy
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Old May 10, 2011 | 12:24 AM
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Originally Posted by black4.8
warning its very addicting tho.
Thats common knowledge, this site is like an addicts anonymous meeting.


HI I'M JAKE
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Old May 10, 2011 | 01:30 AM
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Originally Posted by silverado1ss89
7k what did u buy lol.. Seriously what did u buy
He's probably factoring in the cost of a built transmission as well. To do it right and not cut any corners your looking at a minimum of 7k. Just make a list of all the parts that you will need and you will see how fast it adds up
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Old May 10, 2011 | 01:39 AM
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Ohh okay make sense.. I was just Gona do it all slowly.. Add the turbo first... Then built tranny with stall.. Then cam it...
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Old May 10, 2011 | 02:09 AM
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Originally Posted by silverado1ss89
Ohh okay make sense.. I was just Gona do it all slowly.. Add the turbo first... Then built tranny with stall.. Then cam it...
You better run the softest spring you can find, otherwise the **** you have yet to upgrade is gonna break fast. Differential and transmission won't last long.
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