This is an LS1 rocker stud bolt kit that is recommended for use with the 61969, 61979, 61989 and 61999 cylinder heads. The kit contains eight bolts that are shorter than stock for use on the intake rockers so that flow is not obstructed.
Edelbrock Chevrolet Gen III LS-1 Rocker Stud Bolt Kit
Edelbrock Victor Jr. 454-R Intake Manifold For Chevrolet 396-502 Big-Block V8.
Chevrolet:Gen III LS1:346 (5.7L)