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COMP Cams 1604-16

Ultra Pro Magnum Rocker Arms Chevy Small Block V8 265-400



COMP Cams 1604-16
Representative Image
Product images may differ from actual product appearance.

Part Number: 249-1604-16

Ultra Pro Magnum Rocker Arms
  • Chevy Small Block V8 265-400
  • Rocker Stud: 7/16"
  • Ratio: 1.52
  • 16/pkg
  • $314.08

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    COMP Cams 1604-16 Details

    Chevy Small Block

  • 8650 Chromemoly Steel
  • 29 Percent Stronger Than Pro Magnum
  • Redesigned Steel Stud Mount Rocker
  • Reduced Weight And Greater Strength
  • Increased High RPM Stability
  • Black Oxide Exterior Finish
  • Increased Retainer And Valve Spring Clearances
  • Lifetime Warranty

  • Specifications:

    Engine Make/Size
    Chevy Small Block (262-400)
    Ratio
    1.52
    Stud Size
    7/16
    Arm Finish
    Black oxide
    Arm Material
    Chromoly steel
    Quantity
    Sold as a set of 16
    Rocker Arm Body Style
    Standard
    Rocker Arm Mounting Style
    Stud
    Rocker Arm Nut Style
    Polylock
    Rocker Arm Ratio
    1.52
    Rocker Arm Style
    Full roller
    Self-Aligning
    No
    Shims Included
    No
    Manufacturer's Part Number:
    1604-16

    Industry's top selling steel roller rocker arms have been completely redesigned for reduced weight and greater strength, yielding increased valve train stability

    The original Pro Magnum stud mount rocker arm design has been the standard of the industry for almost 20 years, but recent advancements in design capabilities and steel casting processes have paved the way for a "clean sheet" redesign. Utilizing years of valve train design experience, the latest FEA stress analysis technology and an exhaustive testing regiment (dyno & Spintron®), the Comp Cams engineering team left no detail to chance. Everything from casting techniques to valve spring clearance was scrutinized to ensure that the new Ultra Pro Magnumâ„¢ Rocker Arms not only live up to the lofty standards of their predecessor but also took stud mount rocker performance, stability and value to a whole new level. Consider the mission accomplished.

    The most noticeable advancement with the Comp Cams Ultra Pro Magnum Rocker Arms centers around their nearly unbreakable investment cast 8650 chromemoly body. The arched, web-like design delivers a nearly 29% increase in strength and rigidity while reducing the moment of inertia and optimizing the dynamic balance. The resulting rocker maximizes lift and valve train control at high rpm. The increased retainer and valve spring clearances of the new design enable the use of large diameter valve springs, retainers and locks without clearance or fitment issues. As further testament to the strength of this design, Comp Cams includes a lifetime guarantee against the breakage of the rocker arm body for any reason.

    Even the fit and finish of this innovative new rocker from COMP Cams provides its advantages. The new black oxide exterior finish offers a distinctive appearance along with long term corrosion resistance.

    The Ultra Pro Magnum Rocker Arms from COMP Cams feature an oversized trunion and precision-sorted needle bearings for use with high load valve springs. Additionally, these unique rockers also feature hardened roller tips for reduced friction and elimination of the valve stem "side loading" that causes premature valve guide wear. And like the previous generation Pro Magnums, these new rockers feature a fully rebuildable design that means they very well may be the last rocker arms you ever have to purchase.

    **The last 1 or 2 digits in each part number represent the quantity of rocker arms: Ex. 249-1601-12 means 12 rocker arms are included in each order.

    Does this fit your vehicle?

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    1979-1980 CHEVROLET C20 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 6.6
    • SubModel: CUSTOM DELUXE
    • EngineType: V8

    1980-1981 CHEVROLET K30 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: CHEYENNE
    • EngineType: V8

    1978-1980 PONTIAC GRAND LEMANS

    • Liter: 5.0
    • EngineType: V8
    • SubModel: SAFARI

    1979 CHEVROLET K20 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • EngineType: V8
    • SubModel: CUSTOM DELUXE

    1964 CHEVROLET CHEVELLE

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.4
    • SubModel: BASE
    • EngineType: V8

    1972 CHEVROLET BROOKWOOD

    • CC: 6556
    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1979-1980 CHEVROLET K10 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 6.6
    • SubModel: SCOTTSDALE
    • EngineType: V8

    1984 CHEVROLET G20 VAN

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: BONAVENTURE
    • EngineType: V8

    1983-1986 CHEVROLET G30 VAN

    • Liter: 5.7
    • EngineType: V8
    • SubModel: SPORTVAN

    1982-1986 CHEVROLET BLAZER K5

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: SILVERADO
    • EngineType: V8

    1976 CHEVROLET MALIBU

    • CC: 5031
    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: BASE
    • EngineType: V8

    1970 CHEVROLET CHEVELLE

    • CC: 6555
    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 6.6
    • SubModel: NOMAD
    • EngineType: V8

    1979 CHEVROLET C30 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 6.6
    • SubModel: SILVERADO
    • EngineType: V8

    1981 CHEVROLET K10 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • EngineType: V8
    • SubModel: CHEYENNE

    1977-1979 CHEVROLET G30 VAN

    • EngineType: V8
    • SubModel: BEAUVILLE

    1976 CHEVROLET IMPALA

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8

    1978-1980 OLDSMOBILE CUTLASS SALON

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

    1977-1979 CHEVROLET NOVA

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • EngineType: V8
    • SubModel: BASE

    1980 CHEVROLET K20 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 6.6
    • SubModel: SCOTTSDALE
    • EngineType: V8

    1970 CHEVROLET CHEVELLE

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 6.6
    • SubModel: MALIBU
    • CUI: 400
    • EngineType: V8

    1977-1979 CHEVROLET K10 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: CUSTOM DELUXE
    • EngineType: V8

    1985 CHEVROLET K20 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: SCOTTSDALE
    • EngineType: V8

    1967-1968 CHEVROLET C10 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.3
    • SubModel: BASE
    • EngineType: V8

    1974 CHEVROLET G20 VAN

    • CC: 5736
    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8

    1977-1979 BUICK SKYLARK

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: BASE
    • EngineType: V8

    1975 CHEVROLET C20 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: SILVERADO
    • CUI: 350
    • EngineType: V8

    1959 CHEVROLET IMPALA

    • CC: 4638
    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 4.6
    • SubModel: BASE
    • CUI: 283
    • EngineType: V8

    1978 CHEVROLET C30 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: CHEYENNE
    • CUI: 350
    • EngineType: V8

    1982-1983 CHEVROLET K10 SUBURBAN

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: SILVERADO
    • EngineType: V8

    1969-1972 CHEVROLET CHEVELLE

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: MALIBU
    • EngineType: V8

    1978-1980 OLDSMOBILE CUTLASS SALON

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BROUGHAM

    1976 CHEVROLET IMPALA

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 6.6
    • SubModel: S
    • CUI: 400
    • EngineType: V8

    1968-1969 CHEVROLET EL CAMINO

    • CC: 5358
    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.3
    • SubModel: CUSTOM
    • CUI: 327
    • EngineType: V8

    1979-1980 PONTIAC GRAND LEMANS

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

    1978 BUICK SKYLARK

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: SPORT
    • EngineType: V8

    1969-1971 CHEVROLET C20 SUBURBAN

    • CC: 5031
    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8

    1977 CHEVROLET K20 SUBURBAN

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: SILVERADO
    • EngineType: V8

    1976 CHEVROLET K10 SUBURBAN

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • EngineType: ALL
    • SubModel: BASE

    1975 CHEVROLET CAMARO

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • EngineType: V8
    • SubModel: BASE

    1986 CHEVROLET CAPRICE

    • CC: 5031
    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: BASE
    • EngineType: V8

    1977-1979 CHEVROLET IMPALA

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • EngineType: V8
    • SubModel: BASE

    1972 CHEVROLET BEL AIR

    • CC: 6556
    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1979 CHEVROLET EL CAMINO

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8

    1976 CHEVROLET CAMARO

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: LT
    • CUI: 350
    • EngineType: V8

    1972 CHEVROLET K20 SUBURBAN

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1983-1984 PONTIAC BONNEVILLE

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BROUGHAM

    1969-1971 CHEVROLET BEL AIR

    • CC: 5736
    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1980 CHEVROLET K20 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 6.6
    • SubModel: CUSTOM DELUXE
    • EngineType: V8

    1980 CHEVROLET K20 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: SCOTTSDALE
    • EngineType: V8

    1975-1981 CHEVROLET C20 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: CHEYENNE
    • EngineType: V8

    1980 CHEVROLET K20 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: CUSTOM DELUXE
    • EngineType: V8

    1970-1973 CHEVROLET EL CAMINO

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: BASE
    • EngineType: V8

    1975 CHEVROLET G30 VAN

    • Liter: 5.7
    • EngineType: V8
    • SubModel: HI-CUBE

    1973-1974 CHEVROLET CAPRICE

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 6.6
    • SubModel: CLASSIC
    • EngineType: V8

    1969-1972 CHEVROLET TOWNSMAN

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8

    1977-1979 BUICK CENTURY

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: CUSTOM
    • EngineType: V8

    1973 CHEVROLET CAMARO

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • EngineType: V8
    • SubModel: BASE

    1977-1980 CHEVROLET C20 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: CUSTOM DELUXE
    • EngineType: V8

    1973 CHEVROLET G10 VAN

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8

    1975-1976 CHEVROLET MONTE CARLO

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 6.6
    • SubModel: S
    • CUI: 400
    • EngineType: V8

    1980-1981 PONTIAC FIREBIRD

    • Liter: 5.0
    • EngineType: V8
    • SubModel: TRANS AM

    1966 CHEVROLET SUBURBAN

    • CC: 5358
    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8

    1973-1974 CHEVROLET BEL AIR

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1980 CHEVROLET G30 VAN

    • EngineType: ALL
    • SubModel: BEAUVILLE

    1969-1971 CHEVROLET BEL AIR

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1977-1980 CHEVROLET C20 SUBURBAN

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: CUSTOM DELUXE
    • EngineType: V8

    1978 CHEVROLET MALIBU

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • EngineType: ALL
    • SubModel: CLASSIC ESTATE

    1985-1986 CHEVROLET K20 SUBURBAN

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: CUSTOM
    • EngineType: V8

    1975 CHEVROLET CAMARO

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • EngineType: V8
    • SubModel: LT

    1985 CHEVROLET K20 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: SILVERADO
    • EngineType: V8

    1970-1972 CHEVROLET CHEVELLE

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8

    1980-1981 CHEVROLET CAPRICE

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: CLASSIC LANDAU
    • EngineType: V8

    1968 CHEVROLET C30 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: BASE
    • EngineType: V8

    1980 CHEVROLET C10 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: BIG TEN
    • EngineType: V8

    1978 CHEVROLET K20 SUBURBAN

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: SCOTTSDALE
    • EngineType: V8

    1976 CHEVROLET K5 BLAZER

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1982-1986 CHEVROLET C10 SUBURBAN

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: SILVERADO
    • EngineType: V8

    1976 CHEVROLET MALIBU

    • CC: 5031
    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: CLASSIC
    • EngineType: V8

    1980 CHEVROLET CAMARO

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8

    1980 OLDSMOBILE CUTLASS CRUISER

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BROUGHAM

    1970-1978 CHEVROLET G30 VAN

    • EngineType: V8
    • SubModel: SPORTVAN

    1977-1978 CHEVROLET K10 SUBURBAN

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: SCOTTSDALE
    • EngineType: V8

    1963-1967 CHEVROLET CHEVY II

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • EngineType: V8
    • SubModel: NOVA

    1975-1976 CHEVROLET MONTE CARLO

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: S
    • CUI: 350
    • EngineType: V8

    1979-1980 CHEVROLET C30 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: CUSTOM DELUXE
    • EngineType: V8

    1969-1970 CHEVROLET IMPALA

    • CC: 5736
    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1969 CHEVROLET CAMARO

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: RS
    • EngineType: V8

    1970-1972 CHEVROLET KINGSWOOD

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 6.6
    • SubModel: ESTATE
    • CUI: 400
    • EngineType: V8

    1974 CHEVROLET MALIBU

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 6.6
    • SubModel: CLASSIC
    • EngineType: V8

    1977-1979 CHEVROLET K10 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: SCOTTSDALE
    • EngineType: V8

    1981 CHEVROLET K20 PICKUP

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • EngineType: V8
    • SubModel: SILVERADO

    1983-1984 PONTIAC BONNEVILLE

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

    1968 CHEVROLET C10 SUBURBAN

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.3
    • SubModel: BASE
    • EngineType: V8

    1968-1972 CHEVROLET CAMARO

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: SS
    • EngineType: V8

    1985-1986 CHEVROLET K20 SUBURBAN

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: SILVERADO
    • EngineType: V8

    1982-1986 CHEVROLET C20 SUBURBAN

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.7
    • SubModel: SILVERADO
    • EngineType: V8

    1957 CHEVROLET BEL AIR

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 4.6
    • SubModel: NOMAD
    • CUI: 283
    • EngineType: V8

    1958-1961 CHEVROLET CORVETTE

    • CC: 4638
    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 4.6
    • SubModel: BASE
    • CUI: 283
    • EngineType: V8

    1976 CHEVROLET MONZA

    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 5.0
    • SubModel: BASE
    • EngineType: V8

    1970-1972 CHEVROLET KINGSWOOD

    • CC: 6555
    • Fitment_Note: Must Use Screw-In Studs And Guide Plates
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8
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