Bolt-on Edelbrock performance for AMX, Javelin, Jeep and more. Designed for 1967-91 343, 360, 390 and 401 AMC engines. These heads include adjustable rocker stud and guide plate set-up for use with smallblock Chevy style adjustable 1.5:1 ratio rockers. The intake flange is dual-drilled to accommodate early and late model intake bolt patterns, covering 1967-91. Complete heads include larger-than-stock valve springs to handle most high-lift cams. Features stock location intake ports for compatibility with standard manifolds and headers. A direct bolt-on for 1970 and later engines with 1/2" head bolts, these heads include step-dowel pins for pre-1970 engines. Dual-quench combustion chamber produces approximately 9.5:1 compression in 401 V8s. 45Á intake seat angle offers improved mid- to high-lift flow over the stock 30Á angle. Performer heads #60129/#60139 have a machined heat crossover for 50-state emissions legal performance. Made in USA.

Item Code	EDE-60139
Vendor Name	Edelbrock
Product Type	Cylinder Head
Product Model	Performer
Application	AMC/Jeep (With Exhaust Crossover Port)
Engine Family	AMC/JEEP - V8
Material	Aluminum
Finish	Natural
Cylinder Head Style	Assembled
Combustion Chamber Volume (cc)	54cc
Intake Runner Volume (cc)	185cc
Exhaust Runner Volume (cc)	70cc
CNC Machined Combustion Chamber	No
CNC Machined Intake Runner	No
CNC Machined Exhaust Runner	No
Combustion Chamber Style	Standard
Intake Port Location	Standard
Exhaust Port Location	Standard
Valves Included	Yes
Intake Valve Diameter (in)	2.020"
Exhaust Valve Diameter (in)	1.600"
Valve Springs Included	Yes
Maximum Valve Lift (in)	0.580"
Outside Diameter of Outer Spring (in)	1.550"
Damper Spring Included	No
Retainers Included	Yes
Rocker Arm Studs Included	Yes
Rocker Arm Nuts Included	No
Rocker Arm Nut Thread Size	3/8"
Rocker Arms Included	No
Guideplates Included	Yes
Guideplate Pushrod Diameter (in)	5/16"
Accessory Holes Drilled	Yes
Valve Guides Included	Yes
Heat Crossover	Yes
Quantity	Sold individually.
Notes	50-state street legal.