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RHS 12042-01 - RHS Pro Action Aluminum Small Block Chevy Cylinder Heads



RHS 12042-01 - RHS Pro Action Aluminum Small Block Chevy Cylinder Heads
Representative Image
Product images may differ from actual product appearance.

JEGS Part Number: 784-12042-01

Pro Action 23° Aluminum Cylinder Head
  • Combustion Chambers: 72cc
  • Angle plug
  • $706.99
    Ships 07/08/16
    if Ordered Today
    Truck Freight: $99.00

    RHS 12042-01 - RHS Pro Action Aluminum Small Block Chevy Cylinder Heads 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 this fit your vehicle?

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    1969 CHEVROLET CAMARO

    • Liter: 5.0
    • EngineType: V8
    • SubModel: RS

    1961-1965 CHEVROLET K20 PICKUP

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

    1979 GMC K1500 SUBURBAN

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

    1968-1973 GMC C15/C1500 SUBURBAN

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

    1961-1965 CHEVROLET SUBURBAN

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

    1968-1969 CHEVROLET G20 VAN

    • EngineType: V8
    • SubModel: SPORTVAN

    1975-1979 CHEVROLET NOVA

    • EngineType: V8
    • SubModel: BASE

    1979-1980 GMC K1500 SUBURBAN

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

    1979 CHEVROLET MALIBU

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

    1985 CHEVROLET C10 PICKUP

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

    1967 GMC C35/C3500 PICKUP

    • EngineType: V8
    • SubModel: BASE

    1985-1986 GMC C3500 PICKUP

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

    1984-1986 CHEVROLET C20 SUBURBAN

    • Liter: 5.0
    • EngineType: V8
    • SubModel: SCOTTSDALE

    1985 CHEVROLET G30 VAN

    • Liter: 5.0
    • EngineType: V8
    • SubModel: HI-CUBE

    1969-1972 CHEVROLET G10 VAN

    • EngineType: V8
    • SubModel: BASE

    1975-1978 GMC K25 PICKUP

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

    1983-1986 CHEVROLET C10 PICKUP

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

    1968 GMC C25/C2500 SUBURBAN

    • Liter: 5.4
    • EngineType: V8
    • SubModel: BASE

    1980 CHEVROLET IMPALA

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

    1976-1980 GMC G35/G3500 VAN

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

    1978-1980 CHEVROLET G20 VAN

    • Liter: 5.7
    • EngineType: V8
    • SubModel: NOMAD

    1976 CHEVROLET EL CAMINO

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

    1982 CHEVROLET BLAZER K5

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

    1968 CHEVROLET CHEVY II

    • Liter: 5.7
    • EngineType: V8
    • SubModel: NOVA

    1969-1971 CHEVROLET EL CAMINO

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

    1968 CHEVROLET CHEVELLE

    • Liter: 5.0
    • EngineType: V8
    • SubModel: 300

    1968 CHEVROLET K20 PICKUP

    • Liter: 5.4
    • EngineType: V8
    • SubModel: BASE

    1974 CHEVROLET LAGUNA

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

    1985 CHEVROLET C10 SUBURBAN

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

    1983-1986 CHEVROLET C10 PICKUP

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

    1981 GMC K1500 SUBURBAN

    • EngineType: ALL
    • SubModel: ALL

    1981 GMC K2500 SUBURBAN

    • EngineType: V8
    • SubModel: BASE

    1975-1980 GMC G25/G2500 VAN

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

    1977-1978 GMC C25/C2500 PICKUP

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

    1976-1980 CHEVROLET CAMARO

    • EngineType: V8
    • SubModel: RALLY SPORT

    1977-1986 CHEVROLET CAMARO

    • EngineType: ALL
    • SubModel: Z28

    1972 CHEVROLET MONTE CARLO

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

    1976 CHEVROLET IMPALA

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

    1985 CHEVROLET C20 PICKUP

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

    1968-1969 CHEVROLET CAPRICE

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

    1969-1973 CHEVROLET NOVA

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

    1973 CHEVROLET IMPALA

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

    1968 CHEVROLET C20 PICKUP

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

    1985 CHEVROLET BLAZER K5

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

    1968-1973 CHEVROLET C20 SUBURBAN

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

    1972 CHEVROLET CAMARO

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

    1979 CHEVROLET MONTE CARLO

    • EngineType: V8
    • SubModel: BASE

    1970-1972 CHEVROLET CHEVELLE

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

    1980 CHEVROLET K10 SUBURBAN

    • EngineType: V8
    • SubModel: BASE

    1985 CHEVROLET G30 VAN

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

    1982-1986 GMC C2500 PICKUP

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

    1975-1977 GMC C15 SUBURBAN

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

    1983-1986 CHEVROLET C10 SUBURBAN

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

    1972 CHEVROLET CHEVELLE

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

    1965 CHEVROLET CORVETTE

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

    1975-1976 CHEVROLET IMPALA

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

    1981 CHEVROLET C30 PICKUP

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

    1974 CHEVROLET CAMARO

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

    1983-1986 GMC G35/G3500 VAN

    • Liter: 5.7
    • EngineType: V8
    • SubModel: MAGNAVAN

    1986 GMC C3500 PICKUP

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

    1983-1986 CHEVROLET C10 PICKUP

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

    1969-1970 CHEVROLET K20 SUBURBAN

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

    1982 CHEVROLET K10 PICKUP

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

    1983-1986 CHEVROLET G20 VAN

    • Liter: 5.0
    • EngineType: V8
    • SubModel: CHEVY VAN

    1968-1969 CHEVROLET K20 PICKUP

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

    1972 CHEVROLET KINGSWOOD

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

    1977 CHEVROLET MONZA

    • EngineType: V8
    • SubModel: TOWNE COUPE

    1983-1986 GMC G25/G2500 VAN

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

    1978-1979 CHEVROLET MONZA

    • EngineType: V8
    • SubModel: 2+2 SPORT

    1968 GMC C35/C3500 PICKUP

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

    1975 CHEVROLET NOVA

    • EngineType: V8
    • SubModel: POLICE

    1982-1983 CHEVROLET MALIBU

    • Liter: 5.0
    • EngineType: V8
    • SubModel: CLASSIC

    1973 CHEVROLET NOVA

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

    1973-1974 CHEVROLET LAGUNA

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

    1968-1972 CHEVROLET CHEVELLE

    • Liter: 5.0
    • EngineType: V8
    • SubModel: NOMAD

    1983-1986 GMC C2500 PICKUP

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

    1967 GMC G35/G3500 VAN

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

    1985-1986 GMC CABALLERO

    • EngineType: V8
    • SubModel: DIABLO

    1982-1986 GMC C2500 PICKUP

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

    1968 GMC C25/C2500 PICKUP

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

    1974 CHEVROLET NOVA

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

    1985 CHEVROLET K20 PICKUP

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

    1982 GMC C3500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1972-1974 CHEVROLET NOVA

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

    1977 CHEVROLET MONTE CARLO

    • EngineType: ALL
    • SubModel: S

    1983 CHEVROLET MONTE CARLO

    • Liter: 5.0
    • EngineType: V8
    • SubModel: CL

    1983-1986 CHEVROLET C20 PICKUP

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

    1983-1986 CHEVROLET K30 PICKUP

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

    1966-1967 CHEVROLET C10 PICKUP

    • EngineType: V8
    • SubModel: BASE

    1968 CHEVROLET CHEVY II

    • Liter: 5.3
    • EngineType: V8
    • SubModel: NOVA

    1981 CHEVROLET G20 VAN

    • EngineType: V8
    • SubModel: NOMAD

    1978-1980 CHEVROLET C10 PICKUP

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BIG TEN

    1980-1985 CHEVROLET IMPALA

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

    1981 CHEVROLET K10 SUBURBAN

    • EngineType: ALL
    • SubModel: ALL

    1972 CHEVROLET CHEVELLE

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

    1974 CHEVROLET G20 VAN

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

    1983-1984 GMC G15/G1500 VAN

    • EngineType: V8
    • SubModel: RALLY CUSTOM

    1974-1976 CHEVROLET EL CAMINO

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

    1968 CHEVROLET K20 SUBURBAN

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

    1981 CHEVROLET C20 PICKUP

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