Crane ( Ductile Iron ) rocker arms

Yes..bought them new back in the early 80s....I believe I was running one of the old MP cams... .557 lift,,, the rockers arms back then were probably made with melted down broken adjusters..lol

Ok we have about the same cam specs
Mine are new but were made in 2009
Going to buy those Smith Bros adjusters for mine since forum said crane had bad batches