These rocker arms sets have been removed from brand new GM performance crate engines when customers have requested valve train upgrades on engines prior to shipping.
These small block V8 or V6 rocker arm kits include 16 stamped steel rockers with pivot balls and nuts. Normal 1.5:1 ratio. Use P/N 10089648 for single service part. Use on all V8 models except 1997 or newer LS1 design engines. This kit includes 16 piece of P/N 10089648.