348/409 W SERIES CHEV HEAD 61-65 COMPLETE

Description

Performer RPM heads are
perfect for street
performance, daily drivers,
street rods and muscle cars
where seat-of-the-pants
performance is needed. These
heads give great torque and
horsepower up to 6500 rpm.

• Designed for
  1961-1965 Chevrolet “W”
  series 348-409 big-block
  engines
• 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

N/A

Intake runner
volume: 215cc
Exhaust runner
volume: 115cc
Intake valve
diameter: 2.19″
Exhaust valve
diameter: 1.72″
Valve stem diameter:
11/32″

Valve guides:
Manganese bronze

Deck thickness:
9/16″
Valve spring
diameter: 1.55″
Valve spring maximum
lift: .600″
Rocker stud:
7/16″
Guide plate:
Hardened Steel
Pushrod diameter:
3/8″

Exhaust port location:
Stock

Spark plug fitment:
14mm x 3/4″ reach, gasket
seat
Made In:
USA