Quote: that looks pretty normal. a simple freshening is obviously in order but the camshaft should be replaced IMO. i'd check the bottom of the lifters to see if they are still convex shaped. looking at the worn lobes, some of the lifters might be flat or convex now. how do the cylinder walls look? timing chain stretch? valve springs and guides???, etc. etc.
i did look at the lifters again today. Some look pretty flat , some ARE convex ...
There is some scuffing at the bottom of some of the bores and the piston skirts .
What are the causes of the scuffing - too little piston to bore clearance? The pistons were new Ross with file fit rings , 4.350 bore
