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RHS 12042-01

Pro Action 23° Aluminum Cylinder Head Combustion Chambers: 72cc



RHS 12042-01
Representative Image
Product images may differ from actual product appearance.

Part Number: 784-12042-01

Pro Action 23° Aluminum Cylinder Head
  • Combustion Chambers: 72cc
  • Angle plug
  • $706.99
    Ships 10/11/16
    if Ordered Today
    Made In USA
    Truck Freight: $99.00
    RHS 12042-01 Pro Action 23° Aluminum Cylinder Head Combustion Chambers: 72cc $706.99

    RHS 12042-01 Details

    23° Aluminum Cylinder Heads for Flat Tappet Cams

  • Intake Ports: 180cc
  • Valves: 2.020" Int/1.600" Exh
  • Single Valve Springs: 1.460" (.560" max lift)
  • Assembled

  • Clean Cast Technology
  • For Hardcore Street/Race/Marine Performance
  • Enhanced Features; Superior Quality
  • Proven To Out-Perform The Competition

  • Specifications:

    Engine Make/Size
    Chevy Small Block (262-400)
    Type
    Complete
    Emission
    Non-Emissions
    Usage
    Street/Performance
    Cylinder Head Type
    Standard
    Preparation
    Bolt On (Not Required)
    Finish
    Cast Aluminum
    Manufacturer's Part Number:
    12042-01

    Optimal performance with reliability, Pro Action Heads deliver significant power and torque gains right out of the box for all Small Block Chevy applications. These cylinder heads are perfect for a variety of street rod, muscle car, oval track, and drag racing performance engines. Sold individually.

    Features
  • Advanced port/runner/chamber design
  • 180cc intake ports
  • 64cc or 72cc combustion chambers
  • Straight or angle plug configuration
  • Modified water jacket
  • Multi-angle Serdi valve job
  • Radiused exhaust valve seats for up to 5 percent more airflow than the competition

  • Does RHS 12042-01 fit your vehicle?

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    1973 CHEVROLET EL CAMINO

    • CC: 5736
    • Liter: 5.7
    • Aspiration: N
    • SubModel: CUSTOM
    • Engine Vin: H
    • CUI: 350
    • EngineType: V8

    1984-1986 CHEVROLET K10 SUBURBAN

    • Liter: 5.7
    • EngineType: V8
    • SubModel: SCOTTSDALE

    1984 CHEVROLET IMPALA

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1973 CHEVROLET CAPRICE

    • CC: 5737
    • Liter: 5.7
    • SubModel: ESTATE
    • EngineType: V8

    1982-1986 GMC K1500 PICKUP

    • Liter: 5.7
    • EngineType: V8
    • SubModel: HIGH SIERRA

    1982-1986 CHEVROLET K10 PICKUP

    • Liter: 5.0
    • EngineType: V8
    • SubModel: CUSTOM

    1981-1986 GMC C2500 SUBURBAN

    • Liter: 5.7
    • EngineType: V8
    • SubModel: BASE

    1981 CHEVROLET C10 SUBURBAN

    • EngineType: ALL
    • SubModel: DELUXE

    1973-1974 CHEVROLET C20 SUBURBAN

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1969 CHEVROLET K20 PICKUP

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8

    1966-1967 CHEVROLET IMPALA

    • Liter: 4.6
    • EngineType: V8
    • SubModel: SS

    1968-1969 CHEVROLET BISCAYNE

    • CC: 5358
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8

    1969-1971 CHEVROLET CORVETTE

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1969-1970 CHEVROLET K20 SUBURBAN

    • CC: 5736
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1972 CHEVROLET CHEVELLE

    • CC: 5736
    • Liter: 5.7
    • Aspiration: N
    • SubModel: MALIBU
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8

    1981 CHEVROLET G20 VAN

    • EngineType: V8
    • SubModel: NOMAD

    1977-1978 GMC C25/C2500 PICKUP

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1975-1980 CHEVROLET K20 PICKUP

    • Liter: 5.7
    • EngineType: V8
    • SubModel: CHEYENNE

    1967-1971 CHEVROLET CAMARO

    • Liter: 5.7
    • EngineType: V8
    • SubModel: SS

    1981-1983 CHEVROLET IMPALA

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1980 CHEVROLET MALIBU

    • CC: 5031
    • Liter: 5.0
    • SubModel: SPORT
    • EngineType: V8

    1979-1982 GMC C2500 PICKUP

    • Liter: 5.0
    • EngineType: V8
    • SubModel: SIERRA GRANDE

    1969-1971 CHEVROLET C20 SUBURBAN

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1978-1979 CHEVROLET G30 VAN

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BEAUVILLE

    1978 CHEVROLET MONZA

    • EngineType: V8
    • SubModel: SPORT

    1982-1983 CHEVROLET K10 SUBURBAN

    • Liter: 5.7
    • EngineType: V8
    • SubModel: SILVERADO

    1979 GMC K1500 SUBURBAN

    • Liter: 5.0
    • EngineType: V8
    • SubModel: HIGH SIERRA

    1972 CHEVROLET CHEVELLE

    • CC: 5736
    • Liter: 5.7
    • SubModel: CONCOURS
    • CUI: 350
    • EngineType: V8

    1969-1971 CHEVROLET K10 PICKUP

    • CC: 5736
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1975 GMC SPRINT

    • EngineType: ALL
    • SubModel: HIGH SIERRA

    1982 GMC K1500 SUBURBAN

    • Liter: 5.7
    • EngineType: V8
    • SubModel: SIERRA GRANDE

    1972 CHEVROLET CORVETTE

    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8

    1973 CHEVROLET C10 PICKUP

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1980-1981 CHEVROLET CAPRICE

    • Liter: 4.4
    • EngineType: V8
    • SubModel: CLASSIC LANDAU

    1979-1983 GMC C3500 PICKUP

    • Liter: 5.7
    • EngineType: V8
    • SubModel: HIGH SIERRA

    1969-1971 CHEVROLET C20 SUBURBAN

    • CC: 5736
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1972-1974 CHEVROLET BEL AIR

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8

    1969-1971 CHEVROLET C10 PICKUP

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8

    1982 GMC JIMMY

    • Liter: 5.0
    • EngineType: V8
    • SubModel: SIERRA GRANDE

    1979-1986 CHEVROLET C20 PICKUP

    • Liter: 5.0
    • EngineType: V8
    • SubModel: SILVERADO

    1969-1973 GMC C35/C3500 PICKUP

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1977-1978 CHEVROLET CAPRICE

    • EngineType: V8
    • SubModel: CLASSIC

    1979-1980 GMC G35/G3500 VAN

    • Liter: 5.7
    • EngineType: V8
    • SubModel: RALLY CAMPER SPECIAL

    1969-1971 CHEVROLET K10 PICKUP

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1967-1968 CHEVROLET C10 PICKUP

    • Liter: 5.3
    • EngineType: V8
    • SubModel: BASE

    1975-1976 CHEVROLET IMPALA

    • Liter: 5.7
    • SubModel: CUSTOM
    • CUI: 350
    • EngineType: V8

    1967-1969 CHEVROLET CAMARO

    • Liter: 5.3
    • EngineType: V8
    • SubModel: RS

    1984-1986 CHEVROLET K20 SUBURBAN

    • Liter: 5.7
    • EngineType: V8
    • SubModel: SCOTTSDALE

    1969-1971 CHEVROLET BISCAYNE

    • CC: 5736
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1975-1977 CHEVROLET K10 PICKUP

    • Liter: 5.7
    • EngineType: V8
    • SubModel: SILVERADO

    1973 CHEVROLET MONTE CARLO

    • Liter: 5.7
    • SubModel: S
    • CUI: 350
    • EngineType: V8

    1975 CHEVROLET IMPALA

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1979-1986 CHEVROLET CAMARO

    • EngineType: V8
    • SubModel: BERLINETTA

    1984 CHEVROLET G20 VAN

    • Liter: 5.7
    • EngineType: V8
    • SubModel: BONAVENTURE

    1960 CHEVROLET BISCAYNE

    • Liter: 4.6
    • EngineType: V8
    • SubModel: FLEETMASTER

    1985-1986 CHEVROLET K10 SUBURBAN

    • Liter: 5.7
    • EngineType: V8
    • SubModel: SILVERADO

    1985-1986 CHEVROLET CAMARO

    • CC: 5031
    • Liter: 5.0
    • SubModel: Z28
    • EngineType: V8

    1973 CHEVROLET LAGUNA

    • CC: 5737
    • Liter: 5.7
    • SubModel: ESTATE
    • EngineType: V8

    1976-1978 CHEVROLET C10 SUBURBAN

    • EngineType: V8
    • SubModel: BASE

    1981-1986 CHEVROLET C10 PICKUP

    • Liter: 5.0
    • EngineType: V8
    • SubModel: CUSTOM

    1975-1977 CHEVROLET C30 PICKUP

    • Liter: 5.7
    • EngineType: V8
    • SubModel: SILVERADO

    1979 CHEVROLET MALIBU

    • EngineType: V8
    • SubModel: POLICE

    1972-1974 CHEVROLET BEL AIR

    • CC: 5736
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8

    1975-1977 CHEVROLET K20 PICKUP

    • Liter: 5.7
    • EngineType: V8
    • SubModel: SILVERADO

    1977 CHEVROLET K20 PICKUP

    • Liter: 5.0
    • EngineType: V8
    • SubModel: SILVERADO

    1979 GMC G15/G1500 VAN

    • Liter: 5.7
    • EngineType: V8
    • SubModel: RALLY STX

    1967 CHEVROLET CAMARO

    • Liter: 5.7
    • EngineType: V8
    • SubModel: RS

    1972 CHEVROLET CAMARO

    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: J
    • CUI: 350
    • EngineType: V8

    1979-1980 GMC K2500 PICKUP

    • Liter: 5.7
    • EngineType: V8
    • SubModel: BASE

    1967-1968 GMC K25/K2500 PICKUP

    • CC: 5358
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8

    1981 CHEVROLET K20 PICKUP

    • EngineType: V8
    • SubModel: SILVERADO

    1985-1986 CHEVROLET EL CAMINO

    • EngineType: V8
    • SubModel: SS

    1969-1971 CHEVROLET CHEVELLE

    • Liter: 5.7
    • EngineType: V8
    • SubModel: GREENBRIER

    1973-1974 CHEVROLET G30 VAN

    • Liter: 5.7
    • EngineType: V8
    • SubModel: BASE

    1979-1980 CHEVROLET MALIBU

    • Liter: 4.4
    • EngineType: V8
    • SubModel: BASE

    1983 CHEVROLET K10 SUBURBAN

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1982-1983 CHEVROLET CAMARO

    • CC: 5031
    • Liter: 5.0
    • SubModel: Z28
    • EngineType: V8

    1972 CHEVROLET CHEVELLE

    • CC: 5736
    • Liter: 5.7
    • Aspiration: N
    • SubModel: CONCOURS
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8

    1978-1980 CHEVROLET C10 PICKUP

    • Liter: 5.7
    • SubModel: CUSTOM DELUXE
    • CUI: 350
    • EngineType: V8

    1970-1974 CHEVROLET G30 VAN

    • EngineType: V8
    • SubModel: SPORTVAN

    1967 CHEVROLET C30 PICKUP

    • Liter: 4.6
    • EngineType: V8
    • SubModel: BASE

    1980 CHEVROLET IMPALA

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1959-1967 CHEVROLET BISCAYNE

    • CC: 4638
    • Liter: 4.6
    • SubModel: BASE
    • CUI: 283
    • EngineType: V8

    1977-1978 CHEVROLET MALIBU

    • EngineType: V8
    • SubModel: CLASSIC LANDAU

    1972-1974 CHEVROLET K30 PICKUP

    • Liter: 5.7
    • EngineType: V8
    • SubModel: BASE

    1972-1973 CHEVROLET C30 PICKUP

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1982-1986 GMC K1500 SUBURBAN

    • Liter: 5.7
    • EngineType: V8
    • SubModel: BASE

    1987-1989 GMC G15/G1500 VAN

    • Liter: 5.0
    • EngineType: V8
    • SubModel: RALLY

    1978-1979 CHEVROLET C10 PICKUP

    • Liter: 5.7
    • SubModel: BIG TEN
    • CUI: 350
    • EngineType: V8

    1970-1973 CHEVROLET G20 VAN

    • Liter: 5.7
    • EngineType: V8
    • SubModel: BASE

    1971 CHEVROLET C20 PICKUP

    • CC: 5736
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1974 CHEVROLET EL CAMINO

    • Liter: 5.7
    • EngineType: V8
    • SubModel: CUSTOM

    1977-1980 GMC G25/G2500 VAN

    • Liter: 5.0
    • EngineType: V8
    • SubModel: RALLY

    1973 CHEVROLET MALIBU

    • CC: 5736
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1976 CHEVROLET IMPALA

    • Liter: 5.7
    • EngineType: V8
    • SubModel: BASE

    1979-1980 GMC K1500 PICKUP

    • Liter: 5.7
    • EngineType: V8
    • SubModel: HIGH SIERRA

    1981 CHEVROLET BLAZER K5

    • EngineType: V8
    • SubModel: CUSTOM

    1982-1986 GMC K2500 PICKUP

    • Liter: 5.7
    • EngineType: V8
    • SubModel: HIGH SIERRA

    1961-1966 CHEVROLET C20 PICKUP

    • CC: 4638
    • Liter: 4.6
    • SubModel: BASE
    • CUI: 283
    • EngineType: V8

    1982-1986 GMC K1500 PICKUP

    • Liter: 5.7
    • EngineType: V8
    • SubModel: SIERRA CLASSIC
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