The Edelbrock #60139 Performer RPM cylinder head stands as a seamless bolt-on performance enhancement designed for any 1967-91 AMX, Javelin, or Jeep equipped with a 343, 360, 390, or 401 AMC V8 engine. Featuring adjustable rocker studs and guide plates configured for use with small-block Ford style adjustable 1.6:1 ratio rockers, these heads offer adaptable performance.
The dual-drilled intake flange caters to both early and late model intake bolt patterns, spanning the years 1967-91. A Complete head is equipped with larger-than-stock valve springs capable of accommodating most high-lift cams, and it maintains stock location ports for seamless compatibility with standard manifolds and headers. A direct bolt-on for 1970 and later engines with 1/2" head bolts, this head also includes step-dowel pins for pre-1970 engines.
With dual-quench combustion chambers delivering approximately 9.5:1 compression in 401 V8 engines, these heads feature a 45-degree intake seat angle for improved mid- to high-lift flow compared to the stock 30-degree angle. The Edelbrock #601139 Performer RPM cylinder head includes a machined heat crossover for 50-state emissions legal performance.
- Local Pickup Available:
- No
- Local Delivery Available:
- No
- Additional Handling:
- No
