12 valve lifters for 270. New with 5 hours of run time in '57 270. Seven show proper rotation while five appear to have not been properly spinning in their bores. They all still have nice crowns on the surface that touches the camshaft. The camshaft was installed too far into the block which was probably the cause of lack of spin on some lifters. My machinist says they should be good to go assuming proper cam installation. $100 for the set. You pay shipping and packaging costs or pick up 30 miles north of Houston Tx.