Valve Lash Adjustment: running or not?

[Mr70]

This method has worked very well for me.

[69Tom]

In addition to this thread, I have a question: on an engine that is driven regularly, getting normal street useage, how often should one adjust one's valve lash? Or is there no way to really say?

Just trying to get an idea how often I'll be wrenching on my L72
It's not that I have any problem with doing so--just want to get an idea as to what to expect.

[VintageMusclecar]

Once break-in has been completed, you shouldn't have to check the valves any more than maybe once a year, esp. with an OE cam.

[69Tom]

Excellent. I like the idea of a yearly adjustment. Perhaps I should get one of those too. [img]<<GRAEMLIN_URL>>/burnout.gif[/img]

[bitfactr]

Thanks to everyone who responded.

The engine I'll be adjusting the valves on is an LS6, stock rebuild, using a CompCams regrid of the original LS6 cam. (I have the cam card and can provide the numbers if it would be helpful, but the card is at home.)

If I understand the info given by napa68 about the adjustment for a &quot;30-30&quot; cam, the procedure will also work with my engine. I'm guessing the LS6 cam does not fall in the &quot;30-30&quot; category (please correct me if I'm wrong), and shouldn't require the &quot;30-30&quot; procedure, even though it would work.

I was going to follow EOIC method described by VintageMusclecar. It sounds like it would accomplish the same result (providing the LS6 cam isn't like the &quot;30-30&quot. It seems a bit more friendly for those less experienced.

Thanks,
Dennis

[napa68]

Speaking for myself, I like adjusting on a cold engine. I have found the specs they give for a cold engine hits the spec just right for a hot one ( I checked one of mine before and after)
Best of luck.

Tim

[69 Post Sedan]

The first time I set my valve lash, I do it when the engine is hot. Once it has cooled down, I check them and write it down. My Nova was about .002 difference when it was cold.