What did you do to your NBS GMT800 Tahoe/Yukon Today?

[Fless]

Filled up with E85. It wasn't quite down to the low fuel light but the station wasn't out of my way so I spent some $$. I've been running 91 octane gas for the winter and the pre-fill was 27% ethanol. Now, after the fill, up to 70% ethanol. The E85 "is not a Conoco product."

 

[Walchit]

Then you better polish it all the way back! Or do the relocate and then you’ll buy the billet one.

I think I do want to relocate them, and that ITC Billet stuff is made just a couple hours from here... Lol

I went ahead and put a half-assed polish on this one just in case. Mainly because I'm afraid to hone these cylinders, I need to watch a few videos

 

[Walchit]

Did a little honing last night, they turned out pretty good to my eyes at least, lol.
I went ahead and just did 1 stroke on the lifters, and a d*ngleberry came off the home and was sitting by one of the lifter holes, I need to inspect the oil passages now.

 

[Walchit]

One cylinder does have this discoloration from water sitting in it or something. I can't feel it with my fingernail, so I guess I'm gonna call it good, didn't want to get crazy with the home.
The first picture is without the flash, the second the flash makes it less noticeable.
The rest of them look really good.

 

[Teamiez]

Today I picked the old girl up, some new valve solenoids and they say the transmission should last a while longer...they could have got me for a whole new transmission as I told them if it needed it do it but they think this was the route to go. Just was on the fence as last time the solenoids went, the transmission rpms said we go as high as we please, and smoked it’s self after 6,000 miles. $400 for now is better than $2500 I suppose. @ 80,000 miles on rebuild.

 

[Walchit]

1 down, 4 more to go...

 

[Walchit]

I shoulda bought 3 sets of these cam bearings I guess. #1 was not cooperating, had to move the engine to the workbench and come in from the other side. #4 is still a little tight I think. Probably gonna mess with it some more, hope I don't have to buy another set of bearings...

 

[Walchit]

Took some 2400 grit to one of the number 4 bearings I had tried already. It's spinning really smooth now. I was kinda worried about re-using one, but they seem like they go back in the same the second time. I guess it's crank polishing time now.

 

[Logan5]

Cleaning up some rotors for my big brake upgrade.

 

[Tonyrodz]

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Cleaning up some rotors for my big brake upgrade.

Using the nnbs setup?

 

[Logan5]

Using the nnbs setup?

I'm going with the 2020 setup. I got the rotors & calipers off a wrecked 2020 Silverado.

 

[ratled]

Changed out my O2 sensors. Thanks to Doubleive for responding to My Post on a real rough start up. I can't believe (no pun intended) I forgot all about those, I didn't even have it on my new to me/100k service. Bank 1 upstream was a real PITA but the rest were a breeze

ratled

 

[Tonyrodz]

Changed out my O2 sensors. Thanks to Doubleive for responding to My Post on a real rough start up. I can't believe (no pun intended) I forgot all about those, I didn't even have it on my new to me/100k service. Bank 1 upstream was a real PITA but the rest were a breeze

ratled

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Lucky. You must not live in a rusty state.

 

[mountie]

You could always do a wrap??

 

[Rocket Man]

Changed out my O2 sensors. Thanks to Doubleive for responding to My Post on a real rough start up. I can't believe (no pun intended) I forgot all about those, I didn't even have it on my new to me/100k service. Bank 1 upstream was a real PITA but the rest were a breeze

ratled

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Did it help with the rough start up?

 

[Walchit]

The thumbnail micrometer can still feel this scratch. I've only used 2000-2500 grit, idk if I want to bust out the 1500 or not, lol

 

[wjburken]

The thumbnail micrometer can still feel this scratch. I've only used 2000-2500 grit, idk if I want to bust out the 1500 or not, lol

Can you feel it catch coming at it in both directions?

 

[ratled]

Did it help with the rough start up?

Runs like a champ! It wasn't running bad before the sudden rough start up but I can tell after the fact it wasn't running top notch and can notice the difference now.

 

[Walchit]

Can you feel it catch coming at it in both directions?

Yeah, I can barely feel it at all though. I bought some shoestring last night, bout to go back at it after I make some coffee

 

[mattbta]

Almost half way. I'm in no hurry and work slow and deliberate.