Okay, with an iron head you can go that big if they say so. If it was with an aluminum head, me personally, I'd be down to .002"-.003" cold lash with solid rollers on a hydraulic roller cam.
Yes iron head was a reason for this big cold lash, but I am willing to go the right way with this and will take the heads off the engine. I will just jack it up so I have better access to head bolts and do it.
Problem is that it really is tight on the passenger side. Header is about 1/2" from the inner fender...
This is the price of having big block in a body.
Koffel for sure did not touch the valve guides for sure. I already swapped springs once.
