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

[Rocket Man]

I'm gonna regret starting this in a few hours I bet...
Practiced on one of the rockers I got the other day, and the cast iron pan didn't break! Lol

A bench vise works better.

 

[Walchit]

A bench vise works better.

This worked perfectly. My bench vise is some antique homemade thing, it barely pressed the bushings into my shocks. I will get a pic of it if I remember. It just presses against my workbench, lol

 

[iamdub]

@iamdub
No these are the heads that came on the used engine from the junkyard, 294k, pressure tested at the machine shop.

Ah. Cool.

I only got those other heads because I thought I was getting an updated valve cover. Lol

Ouch. But, you might could have a cheap builder set to mess around with and swap on some day, should you ever feel so inclined.

I gave up on cleaning these rockers and putting the trunions back in.

I first read this as you putting the stock trunnions and bearings back in. lol

The valvetrain is the worst part of building an engine if you like instant gratification or get bored easily. Whatever you do, you gotta repeat it fifteen more times. That's starting from the beginning and ending at the same point fifteen times. You're not looking for improvement and certainly not anything worse. You're looking for continuity- The same shit, fifteen more times.

 

[Rocket Man]

This worked perfectly. My bench vise is some antique homemade thing, it barely pressed the bushings into my shocks. I will get a pic of it if I remember. It just presses against my workbench, lol

Ah, you’re just taking them apart? Putting them back together might be more difficult like that, but you might be ok. I like being able to precisely adjust the trunion. Just make sure they move freely and aren’t binding.

 

[Walchit]

Ah, you’re just taking them apart? Putting them back together might be more difficult like that, but you might be ok. I like being able to precisely adjust the trunion. Just make sure they move freely and aren’t binding.

I got the CHE trunions, they go back in by hand. Part of the reason i chose them...

 

[Walchit]

Ah. Cool.




Ouch. But, you might could have a cheap builder set to mess around with and swap on some day, should you ever feel so inclined.




I first read this as you putting the stock trunnions and bearings back in. lol

The valvetrain is the worst part of building an engine if you like instant gratification or get bored easily. Whatever you do, you gotta repeat it fifteen more times. That's starting from the beginning and ending at the same point fifteen times. You're not looking for improvement and certainly not anything worse. You're looking for continuity- The same shit, fifteen more times.

I can't even imagine trying to put these needle bearings back together,

I found some questionable spots while sanding the inner part of the rocker arms. Had to use three from the extra parts, so I basically got my 50 bucks worth out of them already. Wish I would have found it before I cleaned all of them...

 

[Walchit]

It's hard to tell which side of the snap ring is the smooth side, I think I got them right though.
Now I have to do the other head, lol

 

[iamdub]

It's hard to tell which side of the snap ring is the smooth side, I think I got them right though.

They might have changed up the way they're stamped out to minimize the sharp edge. I'd just lightly drag my finger across each edge at a 45° angle to try to feel which is the smoothest.

Now I have to do the other head, lol

Only gotta repeat yourself eight more times!

 

[Walchit]

I gotta clean the other head a little more, and clean and lap 8 valves, and clean and press put at least 8 rockers too, lol. I might wait till tomorrow, I'm trying to clean up all the bolts and organize them better now

 

[Logan5]

Finally took out all the rusting original brake lines. New SS ones went in. What a sh**ty job that was. Rust and brake fluid everywhere. But got all of them in.

Bleeding everything was not going well until I saw a post from IAmDub about cycling the key on when pumping the brake to cycle the ABS solenoids. Once we did that we had the lines bled shortly thereafter.

Rear bleeder valves were fine but fronts were rusted closed. I ended up just bleeding from the end of the line where it mates to the hose. New calipers are now on my agenda, but I am mobile for the time being.