BBC

AFR Big Block Chevy 265cc Oval Port Magnum Aluminum Cylinder Heads

Product Description

AFR 265cc Oval Port “Magnum” BBC

Small Port, High Velocity, Torque Monster

BBC 265cc Partially Ported Cylinder Head

Want to wake up the Big Block in your favorite tow vehicle? AFR’s partially CNC ported
265cc high velocity oval port is just the ticket! They are also
ideal on smaller cubic inch street performance applications (396-468
CID), providing “gobs” of bottom end torque, tremendous
throttle response, and great all around power. With AFR’s
trademark 3/4” deck, reinforced rockerstud bosses, and thick
rugged castings, you can own the strongest and most efficient heads
on the market today. Premium hardware such as 2.19/1.880
one piece stainless valves, 1.550 double springs, 10 degree locks
and retainers, and high quality studs and adjustable guideplates all come as
standard equipment. Take note the higher flowing exhaust ports and bolt pattern are
raised .375 over stock location, this rarely affects header or chassis fitment. These heads have no EGR and are not
emissions legal.

Note:

Optional stud girdle required for 2° rolled valve angles and 1”
longer head bolts needed on four bottom exhaust bolt holes.

 

      • 50% CNC Ported Combustion Chambers
      • 40% CNC Ported Exhaust Ports (Bowl Blend)
      • 80% CNC Ported Intake Ports (Bowl Blend)
      • Competition 5-angle Valve Job
      • 265cc Intake Ports
      • 115cc Exhaust Ports (as cast)
      • Intake Valve, 2.190” x 5.460” Overall Valve Length
      • Exhaust Valve, 1.880” x 5.448” Overall Valve Length
      • Hydraulic Roller Valve Spring: 1.550” OD Hydraulic Roller Dual Valve Spring, 170 lbs on seat, 473 lbs @ .600” maximum lift
      • Solid Roller Valve Spring: 1.550” OD PAC Racing Solid Roller Valve Spring, 225 lbs on seat, .680” maximum lift
      • 10° 1.450” Chrome Moly Retainers
      • 10° Valve Locks
      • 7/16” Rocker Studs
      • Adjustable 3/8” Guide Plates
      • Viton Valve Seals
      • Hardened Spring Seats
      • Intake Valve Seats
      • Exhaust Valve Seats
      • Bronze Valve Guides

 

3600 265cc Oval Port 24° Magnum Street Aluminum Cylinder Heads

  • BB-Chevy
  • 109cc Combustion Chambers
  • Bare Head Only
  • Sold in Pairs, 2/pkg.
3600-1 265cc Oval Port 24° Magnum Street Aluminum Cylinder Heads

  • BB-Chevy
  • 113cc Combustion Chambers
  • Bare Head Only
  • Sold in Pairs, 2/pkg.
3610 265cc Oval Port 24° Magnum Street Aluminum Cylinder Heads

  • BB-Chevy
  • 109cc Combustion Chambers
  • 1.550” Hydraulic Roller Dual Valve Spring
  • Assembled
  • Sold in Pairs, 2/pkg.
3610-1 265cc Oval Port 24° Magnum Street Aluminum Cylinder Heads

  • BB-Chevy
  • 113cc Combustion Chambers
  • 1.550” Hydraulic Roller Dual Valve Spring
  • Assembled
  • Sold in Pairs, 2/pkg.
3620 265cc Oval Port 24° Magnum Street Aluminum Cylinder Heads

  • BB-Chevy
  • 109cc Combustion Chambers
  • PAC Racing 1.550” Solid Roller Valve Spring
  • Assembled
  • Sold in Pairs, 2/pkg.
3620-1 265cc Oval Port 24° Magnum Street Aluminum Cylinder Heads

  • BB-Chevy
  • 113cc Combustion Chambers
  • PAC Racing 1.550” Solid Roller Valve Spring
  • Assembled
  • Sold in Pairs, 2/pkg.