What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[R3cord303]

Just get some good gaskets. Got any broken bolts?

No broken bolts and brand new gaskets as of 15k ago. I do want to see what i can do with porting them though

 

[Sam Harris]

No broken bolts and brand new gaskets as of 15k ago. I do want to see what i can do with porting them though

New gaskets aren’t necessarily good gaskets. What brand did you install?

 

[Rocket Man]

No broken bolts and brand new gaskets as of 15k ago. I do want to see what i can do with porting them though

Porting stock exhaust manifolds? For what purpose? And what gaskets did you get? If you’re having sealing problems it might be warped flanges but there are gaskets made to accommodate that. Theyre thicker than regular ones. Also torque values are important as well as re-torquing them at a specified time after install.

 

[R3cord303]

New gaskets aren’t necessarily good gaskets. What brand did you install?

They came with the jasper install kit.

Porting stock exhaust manifolds? For what purpose? And what gaskets did you get? If you’re having sealing problems it might be warped flanges but there are gaskets made to accommodate that. Theyre thicker than regular ones. Also torque values are important as well as re-torquing them at a specified time after install.

I will see about retorque values.

This is the video that covers what I think would be fun modification to do. He gets to it at about 4:45 in the video. Combined with cylinder head porting of course

 

[R3cord303]

The Z06 Caliper brackets and assotiated grade 10.9 hardware arrived yesterday. The cheapest and hardest to obtain part of this project is out of the way. Now for the easiest and most expensive! Gotta wait for the pads to wear out on current brakes tho

 

[gooffeyguy]

They came with the jasper install kit.

I will see about retorque values.

This is the video that covers what I think would be fun modification to do. He gets to it at about 4:45 in the video. Combined with cylinder head porting of course

Makes sense if you're porting the exhaust ports in the heads to port the manifold or get aftermarket ones with bigger ports, but just doing the manifold doesn't

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

 

[R3cord303]

Makes sense if you're porting the exhaust ports in the heads to port the manifold or get aftermarket ones with bigger ports, but just doing the manifold doesn't

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

Agreed. There’s a guy on another forum that had an early 2000s Honda Si that had a ported type r manifold on it snd that was actually the first time I’d heard of someone porting a stock mani. Very neat imo that you can do it on these as well

 

[Rocket Man]

Makes sense if you're porting the exhaust ports in the heads to port the manifold or get aftermarket ones with bigger ports, but just doing the manifold doesn't

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

Agreed. There’s a guy on another forum that had an early 2000s Honda Si that had a ported type r manifold on it snd that was actually the first time I’d heard of someone porting a stock mani. Very neat imo that you can do it on these as well

Yes you can port the stock manifolds but like Tom said, to get any benefit you’d need to port the heads too so that would mean pulling them off. Also I think at that point you’d be better off getting shorty headers- they’re pretty cheap. But all that would still only net you probably 20 hp which isn’t really even enough to feel on a heavy truck like ours. But yeah it might be fun just to see. I ported intake and exhaust on some 427 CobraJet heads on my jet boat back in the days and it was a lot of work.

 

[iamdub]

I mean sure, if they offered them I would get those. But none of the other plugs I’ve ever bought were specifically made for a supercharged engine nor has either Whipple or Blackbear ever mentioned plugs with electrodes made just for a supercharger so I don’t see the need to start concerning myself with that now. I mean, I’ve been running old school copper plugs with their fat-ass electrodes for the last year and they work great ( but don’t last long) so I’ll just try the ruthenium’s with the standard electrodes. I’m sure they’ll be fine, I’m not concerned at all. NGK doesn’t even list any version of the TR6 as applicable for my engine, and of course they show nothing as being applicable for a supercharged LQ4 because they only list products for stock configurations. Once you start making performance modifications like cams, blowers, compression changes, nitrous, etc you're on your own. They won’t help you if you ask them what to use.

Can they spec a plug for something like a 2009 CTS-V?

*EDIT* Nevermind. I just saw the Ken had the same thought.

 

[iamdub]

Swapped the rear shocks, then swapped the TJ coils back in. Moving on with life...