Morel Lifters are designed to survive in the harsh environments of performance LS engines with proven durability. Morel part number 7717 is manufactured as the "Drop-In" design lifter for your LS engine. Many engine builders desire this design to maintain the stock style lifter guide and eliminate the need for a "Link-Bar" lifter. Morel Lifters are packaged in a unique enclosed clam-shell case with die-cut foam designed to fit and protect the high quality precision machined lifter bodies. Excellent choice for any LS street/strip engine rebuild.