They include adjustable rocker studs and guide plates set-up for use with small-block Ford style adjustable 1.6:1 ratio rockers. The intake flange is dual-drilled to accommodate early and late model intake bolt patterns, covering 1967-91.
Edelbrock Cylinder Head Assy 61775; Performer RPM for Chrysler 5.2/5.9L Magnum
Edelbrock Cylinder Head Assy 60599; Performer RPM 215cc 72cc for Pontiac 389-455
Edelbrock Cylinder Head Assy 77599; Victor Jr. 23° - 215cc 215cc 64cc for SBC
Edelbrock Cylinder Head Assy 60259; Performer RPM 170cc 60cc for Ford 302/351W
Edelbrock Cylinder Head Assy 60779; Performer RPM Alum for Chrysler 318-360 LA
Edelbrock Cylinder Head Assy 60179; Performer RPM 171cc for Chrysler 318-360 LA
