Description

The Aeroflow Series of Aluminium Cylinder Heads are taking affordable performance street and strip cylinder heads to the next level. These heads utilise ultra-smooth A356-T6 aluminium castings, new as-cast runner and chamber designs produce excellent flow numbers. This combined with a 5-angle competition valve job, diamond-honed bronze guides, hand bowl blending and professional assembly help to outperform some of the best brands in the business.

The Aeroflow Performance big block Chevy cylinder heads are designed for street / race performance engines to give the ultimate in flow at a competitive price. These heads flow 364cfm! Best suited for high revving 454, or 502ci up Big Blocks. Made from A356 aluminium castings, these rectangle port 320cc cylinder heads are ideal for operating in the idle to 6750 rpm range. The complete heads include larger then stock 1.625" diameter dual valve spring to handle up to .850". Suits solid roller camshafts.

Specifications

  • Cylinder Head Configuration: Complete / Assembled
  • Engine: 396-454
  • Highlighted Product Item: No
  • Installed Components: Installed Components

    Intake Valves: 2.25" x 5.49" x 11/32", part no. AF59-4271
    Exhaust Valves: 1.88" x 5.42" x 11/32", AF59-4272
    Valve Springs: 1.65" Dual spring, part no. AF59-4273
    Valve Retainers: 10° 11/32", part no. AF59-4274
    Valve Locks: 10° 11/32" part no. AF59-4275
    Valve Seals: 11/32" x .530"

Compatibility

  • Big Block Chevorlet 396-454

The Aeroflow Series of Aluminium Cylinder Heads are taking affordable performance street and strip cylinder heads to the next level. These heads utilise ultra-smooth A356-T6 aluminium castings, new as-cast runner and chamber designs produce excellent flow numbers. This combined with a 5-angle competition valve job, diamond-honed bronze guides, hand bowl blending and professional assembly help to outperform some of the best brands in the business.

The Aeroflow Performance big block Chevy cylinder heads are designed for street / race performance engines to give the ultimate in flow at a competitive price. These heads flow 364cfm! Best suited for high revving 454, or 502ci up Big Blocks. Made from A356 aluminium castings, these rectangle port 320cc cylinder heads are ideal for operating in the idle to 6750 rpm range. The complete heads include larger then stock 1.625" diameter dual valve spring to handle up to .850". Suits solid roller camshafts.

  • Chamber Volume: 121cc Chamber
  • Intake port volume: 315cc
  • Intake valve size: 2.25"
  • Exhaust valve size: 1.88"
  • Valve spring diameter: 1.625" (41mm)
  • Spring installed height: 2.08" @ 100lbs
  • Maximum valve lift: 275lbs on seat, .850" Maximum Lift, Max RPM 7400-7600
  • Rocker stud diameter: 7/16"
  • Pushrod diameter: 3/8" (width of slot in guide plate)
  • Spark plug style: Straight
  • Cylinder Head Configuration: Complete / Assembled
  • Engine: 396-454
  • Highlighted Product Item: No
  • Installed Components: Installed Components

    Intake Valves: 2.25" x 5.49" x 11/32", part no. AF59-4271
    Exhaust Valves: 1.88" x 5.42" x 11/32", AF59-4272
    Valve Springs: 1.65" Dual spring, part no. AF59-4273
    Valve Retainers: 10° 11/32", part no. AF59-4274
    Valve Locks: 10° 11/32" part no. AF59-4275
    Valve Seals: 11/32" x .530"
  • Big Block Chevorlet 396-454

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