SB Solid Flat Tappet

ValiantKindOfGuy said

If it had the lifters organized I would be willing to take the chance but without the matching set I don’t want to take the chance on a second wear pattern.

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Re break in with new lifters, this equals zero problems. I have never had a problem using new lifters on a used cam. You don't get a second wear pattern from new lifters becaise there all machined the same. It's the cam that must be broken in to the lifter face.