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

[iamdub]

so my alternative is a .027 thickness head gasket.
So my quench will be .037.

Googling around, it seems the Minimum recommended is .035


Cutting it close, but the gasket is in stock...

that also raises my CR even more, ugg!

And who knows, maybe the .030 gasket will show up before i'm ready to actually install the heads...

On a fresh build, especially one that has been measured and checked over multiple times, I'd have no reserves running it. On an older engine or one with aluminum rods, I'd be more cautious. Hell, I'm running .037" quench on my 200K-mile assembly. But I measured and remeasured.

OEM headgasket for the trailblazer SS 6.0: Chevrolet Performance 12589227 Chevrolet Performance Composition Head Gaskets | Summit Racing
.051 thickness!!!

eww

Yeah, factory gaskets leave some to be desired. But, you gotta remember the piston comes outta the hole .008" - .012". Mine averaged .011".

 

[iamdub]

If any of you guys get the "lifter tick of death" on these things rev it over 5 grand and blow the shit out of it.

I guess I'm keeping my shit blown out.

 

[89Suburban]

I guess I'm keeping my shit blown out.

 

[CaptainAmerica1]

And?

It it’s far and away better than the Diablosport Custom 93 tune. Like 15-20% if I had to put a number in it. The Diablosport I’ve had for a year and it just isn’t as refined at part throttle. The WOT is tons better as well. Way more fun to drive now. I’m still gathering parts for the AFM delete and can’t wait!

 

[RooTBeeRthe1st]

I guess I'm keeping my shit blown out.

All of the oil pressure!

 

[iamdub]

All of the oil pressure!

Ported new stock replacement pump, plugged AFM towers and plugged relief valve port. That was also 11.67W-40 Rotella T6. Now running 10W-40 T6 and the pressures are more reasonable. lol

 

[wsteele]

I guess I'm keeping my shit blown out.

I love it, 120mph and a TPMS warning light. Too funny.

Ahh to be young again..

 

[RooTBeeRthe1st]

Ported new stock replacement pump, plugged AFM towers and plugged relief valve port. That was also 11.67W-40 Rotella T6. Now running 10W-40 T6 and the pressures are more reasonable. lol

Nice, I've been running t6 since I bought the thing. Ever since I ran that in the Subaru I kind of just stuck with it Lol

 

[RooTBeeRthe1st]

I love it, 120mph and a TPMS warning light. Too funny.

Ahh to be young again..

My tires are only rated for 100, and the drive shaft can easily come apart around the same speed. So I don't get into triple digits, at least not yet. More parts to be bought first. Lol

 

[wsteele]

My tires are only rated for 100, and the drive shaft can easily come apart around the same speed. So I don't get into triple digits, at least not yet. More parts to be bought first. Lol

I did well into triple digits sitting a few inches off the asphalt. Seemed normal back then...