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Proform 66860C

Aluminum Roller Rockers for Oldsmobile 350-455 V8 with 1.6 Ratio & 7/16" Stud

Proform 66860C

778-66860C

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Proform 66860C Aluminum Roller Rockers for Oldsmobile 350-455 V8 with 1.6 Ratio & 7/16" Stud $183.99
Aluminum Roller Rockers
  • Oldsmobile 350-455 V8
  • 1.6 Ratio
  • 7/16" Stud
  • 16/pkg

  • Proform 66860C Details

    Oldsmobile

  • Rated for up to 450 lbs of Open Load Pressure
  • Precision machined
  • Lengthen Valve Train Component Life
  • Reduce Wear On Valve Stem Tips

  • Specifications:

    Stud Size
    0.4375
    Ratio
    1.6
    Engine Make/Size
    Olds 350-455
    Position
    N/A
    Arm Finish
    Blue anodized
    Arm Material
    Aluminum
    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
    1.6
    Rocker Arm Style
    Full roller
    Self-Aligning
    No
    Shims Included
    No
    Manufacturer's Part Number:
    66860C

    One of the best ways to rid an engine of internal friction is with a set of roller rocker arms. Except for Chrysler shaft mount rockers, Proform's race-proven full needle bearing fulcrums and roller tips unleash horsepower, eliminate valve stem tip wear and tear, and extend valvetrain component life. These aluminum roller rockers are precisely machined to ensure ratio accuracy and consistency.

    JEGS Easy Kits are designed by JEGS professionals to ensure that you get all the correct parts you need.

    Does Proform 66860C fit your vehicle?

    Narrow Results

    1965 OLDSMOBILE JETSTAR I

    • CC: 6966
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 425
    • EngineType: V8 ( 7.0 L / 425 )

    1972-1973 OLDSMOBILE CUTLASS SUPREME

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980 OLDSMOBILE CUTLASS

    • Liter: 5.7
    • SubModel: LS
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977 OLDSMOBILE CUTLASS

    • EngineType: ALL
    • SubModel: BASE

    1968 OLDSMOBILE 442

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1977 OLDSMOBILE OMEGA

    • Liter: 5.7
    • Aspiration: N
    • SubModel: BROUGHAM
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969 OLDSMOBILE 442

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968 OLDSMOBILE F85

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1977 OLDSMOBILE CUTLASS SALON

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1978 OLDSMOBILE TORONADO

    • EngineType: ALL
    • SubModel: BROUGHAM

    1973-1974 OLDSMOBILE 98

    • CC: 7457
    • Liter: 7.5
    • Aspiration: N
    • SubModel: REGENCY
    • Engine Vin: T
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1968 OLDSMOBILE DELMONT 88

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975 OLDSMOBILE CUSTOM CRUISER

    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1974 OLDSMOBILE DELTA 88

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969 OLDSMOBILE F85

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976 OLDSMOBILE CUSTOM CRUISER

    • EngineType: ALL
    • SubModel: BASE

    1979 OLDSMOBILE CUTLASS CALAIS

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978-1980 OLDSMOBILE 98

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972 OLDSMOBILE F85

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1978-1980 OLDSMOBILE DELTA 88

    • Liter: 5.7
    • SubModel: ROYALE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1965 OLDSMOBILE JETSTAR 88

    • Liter: 7.0
    • SubModel: HOLIDAY
    • CUI: 425
    • EngineType: V8 ( 7.0 L / 425 )

    1970-1971 OLDSMOBILE CUTLASS

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977 OLDSMOBILE DELTA 88

    • Liter: 5.7
    • SubModel: ROYALE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973 OLDSMOBILE CUSTOM CRUISER

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977 OLDSMOBILE TORONADO

    • EngineType: ALL
    • SubModel: XSR

    1965-1966 OLDSMOBILE STARFIRE

    • EngineType: ALL
    • SubModel: ALL

    1967 OLDSMOBILE CUTLASS

    • CC: 6555
    • Liter: 6.6
    • SubModel: TURNPIKE CRUISER
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1968 OLDSMOBILE DELTA 88

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: CUSTOM
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972-1974 OLDSMOBILE CUTLASS

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: S
    • Engine Vin: U
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1975 OLDSMOBILE CUTLASS SUPREME

    • Liter: 5.7
    • SubModel: CRUISER
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972-1974 OLDSMOBILE CUTLASS

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1977 OLDSMOBILE CUTLASS SALON

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    1980 OLDSMOBILE CUTLASS CRUISER

    • Liter: 5.7
    • SubModel: BROUGHAM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969 OLDSMOBILE TORONADO

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1980 OLDSMOBILE CUTLASS CALAIS

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969 OLDSMOBILE DELTA 88

    • CC: 5737
    • Liter: 5.7
    • SubModel: CUSTOM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978-1980 OLDSMOBILE DELTA 88

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 OLDSMOBILE OMEGA

    • CC: 5733
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969 OLDSMOBILE DELTA 88

    • CC: 7456
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1968 OLDSMOBILE VISTA CRUISER

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975 OLDSMOBILE CUTLASS

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1967 OLDSMOBILE 98

    • CC: 6966
    • Liter: 7.0
    • Aspiration: N
    • SubModel: HOLIDAY
    • CUI: 425
    • EngineType: V8 ( 7.0 L / 425 )

    1980 OLDSMOBILE CUTLASS SUPREME

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975 OLDSMOBILE CUTLASS

    • Liter: 7.5
    • SubModel: S
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1972-1973 OLDSMOBILE DELTA 88

    • CC: 5737
    • Liter: 5.7
    • SubModel: ROYALE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1965-1966 OLDSMOBILE DYNAMIC

    • CC: 6966
    • Liter: 7.0
    • Aspiration: N
    • SubModel: BASE
    • CUI: 425
    • EngineType: V8 ( 7.0 L / 425 )

    1979 OLDSMOBILE CUTLASS SALON

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 OLDSMOBILE CUTLASS SUPREME

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: CRUISER
    • Engine Vin: U
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1979-1980 OLDSMOBILE TORONADO

    • Liter: 5.7
    • SubModel: BROUGHAM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 OLDSMOBILE CUTLASS

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976 OLDSMOBILE CUTLASS SUPREME

    • Liter: 7.5
    • SubModel: BROUGHAM
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1975 OLDSMOBILE 98

    • Liter: 7.5
    • SubModel: REGENCY
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1975 OLDSMOBILE CUTLASS

    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1975-1976 OLDSMOBILE CUTLASS SALON

    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1975 OLDSMOBILE DELTA 88

    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1979 OLDSMOBILE CUTLASS SUPREME

    • Liter: 5.7
    • SubModel: BROUGHAM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976 OLDSMOBILE DELTA 88

    • EngineType: ALL
    • SubModel: ALL

    1968 OLDSMOBILE CUTLASS

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1968 OLDSMOBILE DELTA 88

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968 OLDSMOBILE VISTA CRUISER

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1965-1966 OLDSMOBILE DELTA 88

    • CC: 6966
    • Liter: 7.0
    • Aspiration: N
    • SubModel: HOLIDAY
    • CUI: 425
    • EngineType: V8 ( 7.0 L / 425 )

    1972-1973 OLDSMOBILE VISTA CRUISER

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979 OLDSMOBILE TORONADO

    • Liter: 5.7
    • SubModel: XSR
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972-1973 OLDSMOBILE DELTA 88

    • CC: 7457
    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1978 OLDSMOBILE TORONADO

    • EngineType: ALL
    • SubModel: BASE

    1979 OLDSMOBILE CUTLASS

    • Liter: 5.7
    • Aspiration: N
    • SubModel: VISTA CRUISER
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975 OLDSMOBILE CUTLASS SUPREME

    • Liter: 7.5
    • SubModel: CRUISER
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1973 OLDSMOBILE 98

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970-1971 OLDSMOBILE VISTA CRUISER

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1979 OLDSMOBILE DELTA 88

    • Liter: 6.6
    • SubModel: ROYALE
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    1966-1967 OLDSMOBILE 442

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973 OLDSMOBILE OMEGA

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1965 OLDSMOBILE JETSTAR 88

    • Liter: 7.0
    • SubModel: BASE
    • CUI: 425
    • EngineType: V8 ( 7.0 L / 425 )

    1977 OLDSMOBILE CUTLASS SUPREME

    • Liter: 6.6
    • SubModel: BROUGHAM
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    1969 OLDSMOBILE DELTA 88

    • CC: 7456
    • Liter: 7.5
    • SubModel: CUSTOM
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1972-1974 OLDSMOBILE CUSTOM CRUISER

    • CC: 7457
    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1977 OLDSMOBILE CUSTOM CRUISER

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

    1970 OLDSMOBILE DELTA 88

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: ROYALE
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1977 OLDSMOBILE CUTLASS SUPREME

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972-1973 OLDSMOBILE DELTA 88

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978-1979 OLDSMOBILE 98

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    1979 OLDSMOBILE CUTLASS SUPREME

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970 OLDSMOBILE DELTA 88

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: CUSTOM
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1977 OLDSMOBILE 98

    • EngineType: ALL
    • SubModel: REGENCY

    1967 OLDSMOBILE DELTA 88

    • CC: 6966
    • Liter: 7.0
    • Aspiration: N
    • SubModel: BASE
    • CUI: 425
    • EngineType: V8 ( 7.0 L / 425 )

    1977 OLDSMOBILE CUTLASS

    • Liter: 6.6
    • SubModel: S
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    1976 OLDSMOBILE CUTLASS SUPREME

    • Liter: 5.7
    • SubModel: BROUGHAM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976 OLDSMOBILE TORONADO

    • EngineType: ALL
    • SubModel: BASE

    1974 OLDSMOBILE VISTA CRUISER

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980 OLDSMOBILE CUTLASS SUPREME

    • Liter: 5.7
    • SubModel: BROUGHAM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978-1980 OLDSMOBILE CUSTOM CRUISER

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1976 OLDSMOBILE CUTLASS SUPREME

    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1971 OLDSMOBILE CUTLASS SUPREME

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1971 OLDSMOBILE CUSTOM CRUISER

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1969 OLDSMOBILE 442

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1972-1974 OLDSMOBILE 98

    • CC: 7457
    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1978-1979 OLDSMOBILE 98

    • Liter: 6.6
    • SubModel: REGENCY
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    1979 OLDSMOBILE CUTLASS SALON

    • EngineType: ALL
    • SubModel: 442

    1969 OLDSMOBILE 442

    • CC: 6555
    • Liter: 6.6
    • Aspiration: N
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1965-1966 OLDSMOBILE DELTA 88

    • CC: 6966
    • Liter: 7.0
    • Aspiration: N
    • SubModel: BASE
    • CUI: 425
    • EngineType: V8 ( 7.0 L / 425 )
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