I had to install a new intake gasket on this 3.4L.
My Question is what is the best way to adjust the rockers.
The way I was trying is run the piston to Top Dead Center. Then with feeler gauge tighten nut, then go 1/4 turn past that.
After doing this, when I rotate the engine at one point in the rotation the rockers become loose again.

In the "old" days you could run the engine with the valve covers off. I think it would be impossible on this 3.4L, you have to take to much off the engine to just get the valve covers off. Thanks ahead of time, if anybody knows how to do this correctly. I don't think I am.

All the info is at autozone.com, repair guides.

I found this, does this make sense...


ALLDATA Information Systems show GM Bulletin # 02-06-01-034 addressing a manual revision for tightening the rocker arm assemblies. The revised procedure calls for the rocker arm fasteners to be torqued to (124 lb in) and then turned an additional 30 degrees for your engine application.


Do I do this in firing order? And with the piston on TDC? Or just torque em?

I didn't have much luck on Autozone. Although I could have been looking right at it and didn't see it. My wife points this out all the time.

The engine is not running when you do this.

I found in the Haynes Manual they say to torque @ 168 in/lbs plus 30 deg.
So I split the difference between the Haynes and Chev. Serv. Bulletin.
I torqued these rocker arm bolts, it does not matter if the piston is on TDC or not. The torque setting overrides the valve spring.

Easy enough, got the intake gasket changed, car is running fine now.

Thanks.

They all had some LocTite 242 or 262 on them before torquing them down, right? I've seen some walk out.