Quote:
Originally Posted by WayFast84
I was not aware that the pushrod holes had to be elongated when I had the heads machined and I'm not sure if the machinist new what ratio arms I had or not which is why I got new ones.
That was one main issue that I was worried about the other was that I supplied valve springs that didn't require the guides to be machined, he didn't use them and supplied his own for some reason. Would a respectable machine shop check the clearence of this stuff or is it possible that the valve guides weren't cut?
I really appreciate all the help and ideas from all of you.
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I think some heads may need it and others may not. Depends on the castings.
If you can, pull a valve cover and post a pic of a valve spring and also your pushrod holes. Post a pic of the head where you broke a stud as well. From my understanding if you run a cam above .480 on Vortec heads with a regular valve spring and no head modifications you are taking a big gamble on clearance. Somebody more experienced can jump in if I'm off base here.
I think I can speak for more than myself when I say a few pics would go a long way.
