Crower Severe Duty Cutaway Solid Roller Lifters used for less than 600 miles. Purchased from a NASCAR Busch Engine builder. These lifters were used in the 1999 season in a GM 358 small block engine. They can be used in a number of small block Chevy engines, but you should confirm your application with the manufacturer to make sure that they are correct for your engine if you are in doubt. These are the perfect lifters for building and engine with a Chevy Bowtie Racing block or a 400 small block with 18° cylinder heads. They are in top condition and are ready to run.