Free Shipping & Handling on Orders Over $95 - Order by 11pm EST for Same-Day Shipping!
0
My Cart
$0.00
1-800-345-4545
Shop By
Category
All Categories

Rebates
Gift Certificates
My Account
Help

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.

Part Number: 784-12042-01

Pro Action 23° Aluminum Cylinder Head
  • Combustion Chambers: 72cc
  • Angle plug
  • $706.99
    Ships 09/08/16
    if Ordered Today
    Made In USA
    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?

    Narrow Results
    Filter By
    Year
    Filter By
    Make
    Filter By
    Model
    Filter By
    SubModel
    Filter By
    EngineType
    Filter By
    CC
    Filter By
    Liter
    Filter By
    Aspiration

    1969-1971 CHEVROLET C30 PICKUP

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

    1968 CHEVROLET K20 PICKUP

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

    1979 CHEVROLET IMPALA

    • EngineType: V8
    • SubModel: SPORT

    1976-1979 CHEVROLET K10 SUBURBAN

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

    1979-1980 CHEVROLET MALIBU

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

    1979-1986 GMC C2500 PICKUP

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

    1986 GMC C3500 PICKUP

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

    1968 CHEVROLET CHEVY II

    • Liter: 5.0
    • EngineType: V8
    • SubModel: NOVA

    1962-1965 CHEVROLET CORVETTE

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

    1969 CHEVROLET EL CAMINO

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

    1979 CHEVROLET CAPRICE

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

    1981-1986 CHEVROLET C10 PICKUP

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

    1980 CHEVROLET MONTE CARLO

    • Liter: 4.4
    • SubModel: SPORT
    • CUI: 267
    • EngineType: V8

    1974 GMC G35/G3500 VAN

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

    1968 CHEVROLET C30 PICKUP

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

    1968-1973 GMC C1500 PICKUP

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

    1979-1980 GMC K2500 SUBURBAN

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

    1972-1973 CHEVROLET BEL AIR

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

    1985-1986 GMC C2500 SUBURBAN

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

    1982-1986 CHEVROLET K10 SUBURBAN

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

    1973 CHEVROLET MALIBU

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

    1981 GMC K2500 SUBURBAN

    • EngineType: V8
    • SubModel: SIERRA GRANDE

    1972 CHEVROLET CHEVELLE

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

    1982 GMC K1500 SUBURBAN

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

    1980 CHEVROLET C10 PICKUP

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

    1968 CHEVROLET CAPRICE

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

    1969-1971 CHEVROLET C10 PICKUP

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

    1972 CHEVROLET C10 PICKUP

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

    1977-1978 GMC C25/C2500 PICKUP

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

    1968 GMC K15/K1500 SUBURBAN

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

    1974 CHEVROLET CAMARO

    • EngineType: ALL
    • SubModel: Z28

    1974 CHEVROLET LAGUNA

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

    1985-1986 CHEVROLET K20 SUBURBAN

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

    1979 CHEVROLET EL CAMINO

    • EngineType: ALL
    • SubModel: SS

    1969-1971 CHEVROLET CHEVELLE

    • Liter: 5.7
    • EngineType: V8
    • SubModel: MALIBU

    1981 CHEVROLET C20 SUBURBAN

    • Liter: 5.0
    • EngineType: V8
    • SubModel: DELUXE

    1967 CHEVROLET K20 PICKUP

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

    1972-1974 CHEVROLET NOVA

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

    1983-1986 CHEVROLET G20 VAN

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

    1982-1986 CHEVROLET K20 PICKUP

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

    1977 CHEVROLET MALIBU

    • EngineType: V8
    • SubModel: CLASSIC SPORT

    1955 CHEVROLET CORVETTE

    • CC: 4343
    • Liter: 4.3
    • SubModel: BASE
    • CUI: 265
    • EngineType: V8

    1959 CHEVROLET IMPALA

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

    1979 CHEVROLET C30 PICKUP

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

    1958 CHEVROLET BISCAYNE

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

    1975 CHEVROLET BEL AIR

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

    1967-1971 CHEVROLET CAMARO

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

    1980 CHEVROLET K10 SUBURBAN

    • EngineType: V8
    • SubModel: SCOTTSDALE

    1967 GMC G35/G3500 VAN

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

    1977-1978 CHEVROLET CAPRICE

    • EngineType: ALL
    • SubModel: CLASSIC ESTATE

    1978 CHEVROLET MONZA

    • EngineType: V8
    • SubModel: SPORT

    1972-1973 CHEVROLET K10 SUBURBAN

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

    1981-1982 CHEVROLET G30 VAN

    • EngineType: V8
    • SubModel: HI-CUBE

    1961-1966 CHEVROLET SUBURBAN

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

    1964 CHEVROLET IMPALA

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

    1983-1986 GMC G35/G3500 VAN

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

    1973-1980 CHEVROLET G30 VAN

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

    1974 CHEVROLET BLAZER

    • CC: 4737
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8

    1979 CHEVROLET MALIBU

    • EngineType: V8
    • SubModel: LANDAU

    1981 GMC CABALLERO

    • EngineType: V8
    • SubModel: CONQUISTA

    1976 CHEVROLET LAGUNA

    • Liter: 5.0
    • EngineType: V8
    • SubModel: S3

    1968 CHEVROLET C10 SUBURBAN

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

    1969-1971 CHEVROLET K10 PICKUP

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

    1974 CHEVROLET CAMARO

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

    1979-1982 GMC C3500 PICKUP

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

    1979-1980 GMC G35/G3500 VAN

    • Liter: 5.7
    • EngineType: V8
    • SubModel: VANDURA SPECIAL

    1977-1979 CHEVROLET IMPALA

    • EngineType: V8
    • SubModel: BASE

    1981-1982 CHEVROLET G20 VAN

    • EngineType: V8
    • SubModel: BEAUVILLE

    1972 CHEVROLET CHEVELLE

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

    1980 CHEVROLET MALIBU

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

    1981-1983 CHEVROLET IMPALA

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

    1975 CHEVROLET CAMARO

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

    1973-1974 CHEVROLET MONTE CARLO

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

    1969-1971 CHEVROLET K10 SUBURBAN

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

    1982-1986 CHEVROLET CAMARO

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

    1968 CHEVROLET CHEVELLE

    • Liter: 5.3
    • EngineType: V8
    • SubModel: 300 DELUXE

    1968 CHEVROLET CHEVY II

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

    1978 CHEVROLET MONTE CARLO

    • EngineType: V8
    • SubModel: SPORT

    1969-1971 CHEVROLET K10 SUBURBAN

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

    1968 CHEVROLET K30 PICKUP

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

    1980-1981 GMC JIMMY

    • EngineType: V8
    • SubModel: SIERRA CLASSIC

    1982-1986 GMC K2500 SUBURBAN

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

    1979 CHEVROLET K10 PICKUP

    • Liter: 5.0
    • EngineType: V8
    • SubModel: CHEYENNE

    1982-1986 CHEVROLET K10 PICKUP

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

    1979-1980 CHEVROLET K10 PICKUP

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

    1984 CHEVROLET BLAZER K5

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

    1968-1969 CHEVROLET CAMARO

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

    1983-1986 GMC G25/G2500 VAN

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

    1980 CHEVROLET IMPALA

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

    1982-1986 GMC C1500 PICKUP

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

    1970-1971 CHEVROLET EL CAMINO

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

    1981 CHEVROLET K10 PICKUP

    • EngineType: V8
    • SubModel: SCOTTSDALE

    1979 CHEVROLET K10 SUBURBAN

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

    1982-1986 CHEVROLET C10 PICKUP

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

    1981 CHEVROLET K20 SUBURBAN

    • EngineType: V8
    • SubModel: DELUXE

    1979-1980 CHEVROLET C20 SUBURBAN

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

    1974-1976 GMC SPRINT

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

    1968 CHEVROLET CHEVELLE

    • Liter: 5.4
    • EngineType: V8
    • SubModel: NOMAD

    1966 CHEVROLET CHEVELLE

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

    1969-1973 GMC K35/K3500 PICKUP

    • Liter: 5.7
    • EngineType: V8
    • SubModel: BASE
    Items You Need