Gen VI 454HO valve guide seals
Just want to get the pro's take on this issue I am having with this engine. I am trying to find out if there are any positive valve seals that will work with the stock dual springs where I do not need to remove the heads and have the guides machined? I have checked everywhere and cannot seem to get the answer. I called GMPP and one guy told me they have a update in 2013 that corrected this with positive seals and the guides did not need to be machined, a different tech at GMPP told me I did need to machine the guides.
Just want to know if anyone else has this same engine and if you addressed this issue.