Nnbs intake swap question

[JakeO625]

Hey guys I've been doing a lot of research on this and I'm going to start looking at u pulls for parts but here's my question. On rockauto they have 2 different intakes for a 2008 yukon depending on if I get the 5.3 or 6.0 intake. I have a 2003 yukon denali so do I need to look for a nnbs with a 6.0 or will any motor work? Also what years and models can I get an intake and throttle body from? Sorry if this has been answered before.

 

[JakeO625]

No one?

 

[JoeM5952]

I think you have to reuse your stock TB unless you get a kit for the wiring, but you will need an adaptor plate.

here is a write up I found that I will use when I get around to doing mine.

http://www.gmfullsize.com/threads/how-to-03-07c-nbs-tbss-nnbs-intake-swap.264691/

 

[Rocket Man]

From what I understand the stock intake on the NBS 6.0 is more than sufficient unless you're running a big cam or heads. So are you building the entire engine or just swapping the intake?

 

[JakeO625]

From what I understand the stock intake on the NBS 6.0 is more than sufficient unless you're running a big cam or heads. So are you building the entire engine or just swapping the intake?

Everything I've read said it was good for 20 hp. It's a stock plain Jane 6.0. I have a leaking intake gasket and I get get an intake and throttle body from a nnbs intake for free. I would only have to purchase an x link. Do you guys think I will notice any improvement or are these intake swaps meant for built motors?

 

[Rocket Man]

I'm hoping to hear someone with more knowledge than me chime in also. Since seeing this post I've done a lot of reading up on this and I see there is conflicting information. Some say there is anywhere from 10-30 hp gain, others say there isn't much at all. Some say it depends on what you start with (5.3, 6.0, 99-02, 03-06, etc.) and then there's the fact that a lot of them had a tune done for the first time, which already adds that much hp. Also I see there was a lot of problems initially, mainly with the X-link but also the different TB's that were being used. @ezdaar where are you?

 

[Ridculous]

Too Red Rockets point on the X link...when I upgraded my 6.0 to a 6.7 I also went with a ported TB from a c6 Z06 and had to use the X link adaptor. I am on my 2nd X link so far (around 10k total on the build) as the first one was throwing some reduce power codes. I think eventually the heat in the engine bay effects the X link adaptor. So far I have some wire insulation on the 2nd one and so far no issues. Either way it could cause you additional problems - just my 2 cents.

 

[JakeO625]

Too Red Rockets point on the X link...when I upgraded my 6.0 to a 6.7 I also went with a ported TB from a c6 Z06 and had to use the X link adaptor. I am on my 2nd X link so far (around 10k total on the build) as the first one was throwing some reduce power codes. I think eventually the heat in the engine bay effects the X link adaptor. So far I have some wire insulation on the 2nd one and so far no issues. Either way it could cause you additional problems - just my 2 cents.

Thanks for the heads up. I can get the intake and throttle body for free from a buddy I'm curious if it's an upgrade or not for a stock 6.0. If not i might just keep it stock I just read online for the 5.3 it was a decent upgrade. If it'll add some ponies and help with the high altitude in Denver I'll do it. If not i guess I'll stay stock.

 

[JakeO625]

Also if it is an upgrade to the nbs 6.0 RockAuto lists a different intake for the 5.3 and the 6.0 nnbs. Does it matter if I get an nnbs 5.3 or 6.0 intake will either work? Or do I need a 6.0 nnbs intake for my nbs 6.0 denali?

 

[TheAutumnWind]

Thanks for the heads up. I can get the intake and throttle body for free from a buddy I'm curious if it's an upgrade or not for a stock 6.0. If not i might just keep it stock I just read online for the 5.3 it was a decent upgrade. If it'll add some ponies and help with the high altitude in Denver I'll do it. If not i guess I'll stay stock.

The intake manifold is an upgrade. I have read about occasional failures with the xlink.

from the link already posted in this thread:

u have some options here. to run your stock 76mm TB, u will need to buy an adapter plate. thats the cheapest route. if youre like me and cant justify a big ass expensive intake and keeping a stock TB, get u a 90mm LS7 TB or run an nnbs TB. for you to be able to run a different throttle body (the LS7 or nnbs TB) u will need to purchase a DR X harness from torquerushperformance.com. its ~$240 and looks like this

 

[JakeO625]

The intake manifold is an upgrade. I have read about occasional failures with the xlink.

from the link already posted in this thread:

So for my 6.0 do I need an 07+ 5.3 or 6.0 intake or does it not matter?

 

[01ssreda4]

Either will work. Can buy brand new for $100.

 

[JakeO625]

Awesome I appreciate all the responses guys. I'll update the post with pics whenever everything is installed.

 

[hoe]

Some miss info here.
Yes the nnbs intake is a upgrade similar to the trailblazer ss intake. Yes there good for about 20 hp and more if you have a power adder or supporting mods. That's pretty good Bolton. Injector rails needs to be custom on crossover or return systems. I would stick drive by cable with big throttle body. Be sure you have a intake that matches your cathedral heads. 6.0 nnbs has square heads. 5.3 is cathedral but same size intakes..

I sold my 6.2 heads and intake. Going with a custom blower intake.

 

[05Single]

Some miss info here.
Yes the nnbs intake is a upgrade similar to the trailblazer ss intake. Yes there good for about 20 hp and more if you have a power adder or supporting mods. That's pretty good Bolton. Injector rails needs to be custom on crossover or return systems. I would stick drive by cable with big throttle body. Be sure you have a intake that matches your cathedral heads. 6.0 nnbs has square heads. 5.3 is cathedral but same size intakes..

I sold my 6.2 heads and intake. Going with a custom blower intake.

So a tbss should match my 5.3 heads ?

 

[Spencer_waynee]

Getting ready to do mine from what I've collected pretty straight forward all I have left to buy is the little eVap solenoid and the c5 filter

 

[Spencer_waynee]

And im using the fuel rail and injectors that are already on the intake..

 

[Rocket Man]

Getting ready to do mine from what I've collected pretty straight forward all I have left to buy is the little eVap solenoid and the c5 filter

View attachment 70673

View attachment 70674

Is yours a 6.0 or 5.3?

 

[Spencer_waynee]

5.3

 

[Rocket Man]

Either will work. Can buy brand new for $100.

So I can buy a 2007-up 6.0 intake for my '02 6.0 for $100 and swap it in and gain some hp? I have a BB autocal so I can have them tune for it.