Edelbrock Performer RPM 348/409 Chevrolet Cylinder Head Hydraulic (Complete)

• Application: Universal
• GTIN: 00085347608195
• Combustion Chamber Volume: 16.0 cu.in
• Deck Height: 9.69 in
• Deck Thickness: 0.562 in
• Exhaust Valve Diameter: 1.720 in
• Guide Plates Included: Yes
• Intake Runner Volume: 220.0 cu.in
• Intake Valve Diameter: 2.190 in
• Material: Aluminum
• Push Rod Diameter: 0.375 in
• Rocker Stud Diameter: 0.437 in
• Valve Spring Diameter: 1.550 in
• Valve Spring Maximum Lift: 0.600 in
• Valve Stem Diameter: 0.341 in

Installation Notes:

EQUIPPED WITH SPRINGS FOR USE IN HYDRAULIC FLAT TAPPET CAMSHAFT APPLICATIONS

• Original port locations and valve angles for bolt-on convenience
• CNC port matched 220cc intake and 115cc exhaust ports for optimum flow and power
• Improved port design for more performance
• Hardened spring cups, screw-in rocker studs and hardened guide plates
• 1958 348 c.i.d. applications will require modifications to cylinder head (contact Edelbrock tech department for detailed information)
• Use Edelbrock head gasket sets.
• May be used on 348 engines with valve lifts up to .550" only.
• Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat.
• These heads will only fit 1958-65 348 c.i.d. "W" engines if an Edelbrock #5409, #7159 or stock large port 409 c.i.d. manifold is used.
• Proper cylinder wall notching must be checked to ensure exhaust valve to cylinder clearance.
• Deck thickness: 9/16"
• Rocker stud diameter: 7/16"
• Pushrod diameter: 3/8" (width of slot in guide plate)