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

[Tonyrodz]

Started this project...

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Going true duals?

 

[osiris94ej]

Going true duals?

No. Cant handle the bullet and jones' turbine. Just waaaay too loud for no reason. Light throttle is nice, accelerating and wot is annoying/raspy loud.

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[992dr]

Started this project...

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What muffler is that? Part #?

Going true duals?

Good question haha. Wondering myself.
EDIT: just saw your response

 

[osiris94ej]

What muffler is that? Part #?



Good question haha. Wondering myself.

****** Aerochamber 21505HKR

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[992dr]

****** Aerochamber 21505HKR

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Thanks.
So, this will make three mufflers under there?

 

[osiris94ej]

Thanks.
So, this will make three mufflers under there?

The turbine is being replaced with the aerochamber.

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[992dr]

Gotcha

 

[George B]

I can't take any unless I absolutely have too, otherwise I risk everything I love in my life. Addiction is a real mean *****.

Truth! Never was a fan of pills. Beer was my nemesis. Tried coke twice. Was way too good. I knew I couldn’t do that any more. I got lucky I could say no! 9 years sober

 

[Tonyrodz]

Truth! Never was a fan of pills. Beer was my nemesis. Tried coke twice. Was way too good. I knew I couldn’t do that any more. I got lucky I could say no! 9 years sober

 

[PPV12HOE]

Also, here is what I'm doing to my GMT900 today...well, for the past 4 weeks. I finally got the block back from the machine shop last night. Heads should be done this time next week. As you can see, I got this 2nd hand from somewhere that had salt. But we're gonna sand down and paint the frame we CAN get to prior to dropping the engine and transmission back in.View attachment 255268 View attachment 255269

Get some POR15.... never rust there again... just don't get it on bare skin... believe me it doesn't come off easy...

 

[MLRTYME]

Why all the engine work?

Started to lose oil pressure, and knew I already had a slow drip out of the rear main and the dreaded piston slap. Also knew the transmission was not as crisp as I'd like...so it was time. Figured I could do a few tweaks to the engine internals (better lifters/pushrods/springs/pistons/etc, different cam, port and bowl work on the heads etc...) while fixing the broken engine mounts, rear main leak, sluggish transmission, etc. Don't fear the engine work...that I'm comfortable with. Just don't ask me to bondo and prep the body on any of your vehicles. Don't mind laying down the color, just need practice on the prep work stuff. Other than that, it's easy! Looking for another 130k out of it...and I'll consider the money well spent.

Looking forward to getting it back up and running again, so I can focus on the K5 (rebuild the front diff kingpins and tie rod ends...then practicing that body work nonsense so I can finally paint it, new weather stripping, and then get the interior back in). But that's a different truck for a different forum.

 

[Tonyrodz]

Started to lose oil pressure, and knew I already had a slow drip out of the rear main and the dreaded piston slap. Also knew the transmission was not as crisp as I'd like...so it was time. Figured I could do a few tweaks to the engine internals (better lifters/pushrods/springs/pistons/etc, different cam, port and bowl work on the heads etc...) while fixing the broken engine mounts, rear main leak, sluggish transmission, etc. Don't fear the engine work...that I'm comfortable with. Just don't ask me to bondo and prep the body on any of your vehicles. Don't mind laying down the color, just need practice on the prep work stuff. Other than that, it's easy! Looking for another 130k out of it...and I'll consider the money well spent.

Looking forward to getting it back up and running again, so I can focus on the K5 (rebuild the front diff kingpins and tie rod ends...then practicing that body work nonsense so I can finally paint it, new weather stripping, and then get the interior back in). But that's a different truck for a different forum.

We have an "Other Vehicles" thread here. Please post there. We're all gearheads here, and love, and can appreciate all vehicles, and all work being done.

 

[iamdub]

Started to lose oil pressure, and knew I already had a slow drip out of the rear main and the dreaded piston slap. Also knew the transmission was not as crisp as I'd like...so it was time. Figured I could do a few tweaks to the engine internals (better lifters/pushrods/springs/pistons/etc, different cam, port and bowl work on the heads etc...) while fixing the broken engine mounts, rear main leak, sluggish transmission, etc. Don't fear the engine work...that I'm comfortable with. Just don't ask me to bondo and prep the body on any of your vehicles. Don't mind laying down the color, just need practice on the prep work stuff. Other than that, it's easy! Looking for another 130k out of it...and I'll consider the money well spent.

Deja vu!

Recently finished very similar scope of work on mine. My pressure wasn't low, but I wanted it better after deleting the AFM. I plugged the AFM towers and relief valve port in the oil pan, ported a new stock replacement (Melling M295) oil pump, new Delphi lifters, TSP Stage2, some fat ass 3/8" pushrods, "yellow" LS6 springs, blended bowls and .020" shave on the heads, etc. Left the stock rotating assembly alone, though, including the bearings. It was fine for my plans with the 200K-mile mill. Oil pressure pretty much stays around 37-47 at normal driving and will hit around 80 near redline.

How about a build thread, even if just on the motor?

 

[Derick]

Got my dashmat from ebay and I'm as pleased as I possibly could be with it.

 

[Tonyrodz]

Got my dashmat from ebay and I'm as pleased as I possibly could be with it.

View attachment 255338

I like that lap top mount.

 

[Rocket Man]

Started to lose oil pressure, and knew I already had a slow drip out of the rear main and the dreaded piston slap. Also knew the transmission was not as crisp as I'd like...so it was time. Figured I could do a few tweaks to the engine internals (better lifters/pushrods/springs/pistons/etc, different cam, port and bowl work on the heads etc...) while fixing the broken engine mounts, rear main leak, sluggish transmission, etc. Don't fear the engine work...that I'm comfortable with. Just don't ask me to bondo and prep the body on any of your vehicles. Don't mind laying down the color, just need practice on the prep work stuff. Other than that, it's easy! Looking for another 130k out of it...and I'll consider the money well spent.

Looking forward to getting it back up and running again, so I can focus on the K5 (rebuild the front diff kingpins and tie rod ends...then practicing that body work nonsense so I can finally paint it, new weather stripping, and then get the interior back in). But that's a different truck for a different forum.

Nice. You should do a build thread.

 

[Doubeleive]

L94 fuel pressure, how does anyone else's compare? curious mostly

 

[gooffeyguy]

L94 fuel pressure, how does anyone else's compare? curious mostly

View attachment 255358

I was out a bit ago picking up Applebee's carside to go and had my Torque Pro app on and it showed my fuel pressure at 43.5 while idling.

Off topic, but my oil pressure while idling was 28-30psi

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[Doubeleive]

I was out a bit ago picking up Applebee's carside to go and had my Torque Pro app on and it showed my fuel pressure at 43.5 while idling.

Off topic, but my oil pressure while idling was 28-30psi

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when I had mine hooked up, warmed up and idling oil pressure said 34 the one time looked at it as I was scrolling thru.

 

[89Suburban]