Notes: Street legal performer; chamber size 60cc; single; 2.02" intake valves; requires pushrods PN# 9632; street legal; requires head bolt bushings PN[9680] and OE bolts or head bolt kit PN[8552]; will not accept rail rockers; recommend Edelbrock gasket PN[7313] head; PN[7220] intake; PN[7227] exhaust; 50-state street emissions legal;

Notes: 24 stud; recommend Felpro gasket PN[1055] left and PN[1056] right;

Notes: Performer RPM; chamber size 87cc; single; polished; street legal;

Notes: Performer; chamber size 60cc; single; 1.90" intake valves; machined for FelPro Loc Wire(TM) gasket; street legal; requires head bolt bushings PN[9680] and OE bolts or head bolt kit PN[8552]; will not accept rail rockers; recommend Edelbrock gasket PN[7313] head; PN[7220] intake; PN[7227] exhaust;

Notes: E-Tec 170. Chamber size 64cc. Single. For engines with Vortec-style intake manifolds. Polished. Small block.

Notes: Performer; chamber size 54cc; single; w/o exhaust crossover port; 50-state street emissions legal;

Notes: Performer RPM; chamber size 72cc; single; NHRA legal; not for sale or use on pollution controlled motor vehicles; recommend rocker shaft stud kit PN[6009] for better rocker shaft retention; rec. Edelbrock gskt PN[7302] head; FelPro PN[1213] intake; PN[1413] exhaust;

Notes: Performer; chamber size 110cc; single; 454-O; street legal; Big block.

Notes: High lift/large chamber heads; pair;

Notes: Street legal performer; chamber size 60cc; single; 2.02" intake valves; requires pushrods PN# 9632; street legal; requires head bolt bushings PN[9680] and OE bolts or head bolt kit PN[8552]; will not accept rail rockers; recommend Edelbrock gskt PN[7313] head; PN[1250] intake; PN[1415] exhaust; 50-state street emissions legal;