BlueCRDinAZ wrote:
You all make valid points regarding the valve interchange, and it reinforces my decision to stay stock VM. But cost was $7.50 for the GMs. I only looked at the valve though, I did not look at GM springs or keepers, etc. I think it is very wise for me to stay stock in this instance.
I absolutely agree.
The only thing any of us can offer at this point re: Duramax head parts, are ideas, speculation, and hypothesis.
We KNOW the VM parts will work. We just don't know how long, but AFAIK none failed near-new, and the great majority are still working fine 12 years on.