BC,
That's a good point but I bought this engine and transmission out f a wrecked truck. I have not heard it run so I don't know if the issue of a collapsed lifter already exist. I'd hate to put it in my 51 and have a problem.
I am getting my engine/transmission harness trimmed and a tune in the computer that will make the engine/transmission electrical system a stand alone unit. They turn the AFM command off via the tune of the computer. To your point, if a lifter has not failed yet, I should be good to go.
Would it be an acceptable practice to pull all the AFM lifters and replace with new lifters of the same P/N and continue to use the original cam?