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RPM AMC/ Jeep Cylinder Head With Exhaust Crossover Complete

$1,306.95
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In stock
SKU
60139
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Details

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. 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. Complete heads include 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, these heads include step-dowel pins for pre-1970 engines. Their dual-quench combustion chambers produce approximately 9.5:1 compression in 401 V8 engines. The 45° intake seat angle offers improved mid- to high-lift flow over the stock 30° angle. The Edelbrock #601139 Performer RPM Cylinder Heads have a machined heat crossover for 50-state emissions legal performance.INSTALLATION NOTE: • Match with Edelbrock head gasket sets. • Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. • Use Edelbrock Step Washer Kit #9693 on 1967-69 engines with 7/16" head bolts. • Deck thickness: 5/8" • Rocker stud diameter: 3/8" • Pushrod diameter: 5/16" (width of slot in guide plate).

Documents & Installation Notes

Specs

Availability Not Available
Application Application Specific
GTIN 00085347601394
Availability Note Available to Order
Warranty 12 Months
Emissions Code
Hazardous Materials Warning WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.p65Warnings.ca.gov
CNC Ported No
Combustion Chamber Volume 54.0 cu.in
Deck Height 9.208 in
Deck Thickness 0.625 in
Exhaust Valve Diameter 1.600 in
Guide Plates Included Yes
Intake Runner Volume 185.0 cu.in
Intake Valve Diameter 2.020 in
Material Aluminum
Push Rod Diameter 0.312 in
Rocker Stud Diameter 0.375 in
Valve Angle 18 deg
Valve Spring Diameter 1.550 in
Valve Spring Maximum Lift 0.580 in
Valve Stem Diameter 0.341 in