Edelbrock 60139 RPM AMC/ Jeep Cylinder Head With Exhaust Crossover Complete for Select American Motors AMX, American Motors Ambassador, American Motors American, American Motors Hornet, American Motors Javelin, American Motors Matador, American Motors

The Edelbrock #60139 Performer RPM cylinder head is designed as a bolt-on performance upgrade for any 1967-91 AMX, Javelin or Jeep with a 343, 360, 390 or 401 AMC V8 engine. 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. A Complete head includes larger than- stock valve springs to handle most high-lift cams. They feature stock location ports for compatibility with standard manifolds and headers. A direct bolt-on for 1970 and later engines with 1/2" head bolts, This head includes step-dowel pins for pre-1970 engines. Their dual-quench combustion chambers produce approximately 9.5:1 compression in 401 V8 engines. The 45deg intake seat angle offers improved mid- to high-lift flow over the stock 30deg angle. The Edelbrock #601139 Performer RPM cylinder head has a machined heat crossover for 50-state emissions legal performance.

The Edelbrock #60139 Performer RPM Cylinder Heads are designed as a bolt-on performance upgrade for any 1967-91 AMX, Javelin or Jeep with a 343, 360, 390 or 401 AMC V8 engine.

Fits: 1968-1970 American Motors AMX, 1967-1974 American Motors Ambassador, 1967 American Motors American, 1971-1974 American Motors Hornet, 1968-1974 American Motors Javelin, 1971-1978 American Motors Matador, 1969 American Motors Rambler, 1967-1970 American Motors Rebel, 1974-1983 Jeep Cherokee, 1984-1991 Jeep Grand Wagoneer, 1972-1973 Jeep J-2500, 1972-1973 Jeep J-2600, 1972-1973 Jeep J-4800, 1974-1988 Jeep J10, 1974-1988 Jeep J20, 1972-1983 Jeep Wagoneer

Please review Specifications and the detailed fitment table for notes and exceptions.