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COMP Cams 641-1

COMP Cams Machined Steel Race Valve Locks Angle: 7°

249-641-1

Estimated to ship directly from the manufacturer on 12/11/18

$2.69
COMP Cams Machined Steel Race Valve Locks Angle: 7° $2.69
Out of stock
QTY
Machined Steel Race Valve Locks
  • Angle: 7°
  • Valve Stem: 3/8"
  • Single Groove
  • 1/pkg
  • COMP Cams 641-1 Details

    Race Valve Locks

  • 7° lock angle

  • Wider Angle
  • Precision Machined
  • Super Tough
  • Inside Tang
  • 1 Year Limited Warranty

  • Specifications:

    Lock Angle
    7 Deg.
    Lock Groove Quantity
    1-groove
    Lock Material
    Steel
    Lock Style
    7 degree
    Manufacturing Process
    Machined
    Quantity
    Sold as a pair
    Recessed for Lash Cap
    No
    Valve Stem Diameter (in.)
    0.372
    Manufacturer's Part Number:
    641-1

    Most people believe that the tang inside a valve lock is what holds the valve spring retainer and spring in place while the engine is running, however tangs are not strong enough to withstand today's open spring loads of 1000+ pounds. The tang's sole purpose is to temporarily locate the lock, retainer, and spring relative to the valve until the taper of the retainer can nest around the outside surface of the lock. This creates the "collet effect" that binds the two together; the more spring force exerted on the retainer as the valve opens, the more force applied by the collet effect to keep the retainer and lock in place.

    With the emergence of valve sizes other than 5/16", 11/32", and 3/8", it is important to make sure valve locks match valve size. There should always be a small gap between the two halves of the lock when they are properly positioned on the valve stem. If the two halves are in contact without a gap, the valve locks are for a bigger stem. If the locks fit tight to the stem and leave a gap between the middle of the lock and the stem's outer diameter, the locks are too small for the valves. All locks should be checked before final installation to ensure they're the correct size.

    Comp Cams 7° Street Valve Locks are made from stamped, hardened steel. Designed for stock engine rebuilds and only recommended for street use with lighter spring loads. The 7° Race Valve Locks are available in Machined Steel or Titanium. They offer the same valve spring location accuracy as the 10° Super Locks, without the need to change to 10° retainers. Comp Cams 10° Super Locks handle higher spring pressures by distributing load over a larger area. This reduces the chance of a "pull-through" failure. Recommended for all race applications.

    Does COMP Cams 641-1 fit your vehicle?

    Narrow Results

    1975 OLDSMOBILE TORONADO

    • EngineType: ALL
    • SubModel: CUSTOM

    1971 PONTIAC LEMANS

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

    1980-1981 PONTIAC GRAND LEMANS

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 265
    • EngineType: V8 ( 4.3 L / 265 )

    1979-1980 PONTIAC LEMANS

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1980 BUICK ELECTRA

    • Liter: 4.9
    • SubModel: ESTATE WAGON
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1957 PONTIAC CATALINA

    • CC: 5687
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 347
    • EngineType: V8 ( 5.7 L / 347 )

    1972-1973 PONTIAC CATALINA

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

    1975 PONTIAC LEMANS

    • Liter: 6.6
    • SubModel: SAFARI
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1971 PONTIAC LEMANS

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

    1970 PONTIAC EXECUTIVE

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

    1962-1966 PONTIAC GRAND PRIX

    • CC: 6376
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1974 BUICK RIVIERA

    • EngineType: ALL
    • SubModel: ALL

    1977 PONTIAC GRAND PRIX

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

    1978 PONTIAC BONNEVILLE

    • Liter: 6.6
    • SubModel: SAFARI
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1974 PONTIAC LEMANS

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

    1974 PONTIAC FIREBIRD

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

    1965 PONTIAC TEMPEST

    • CC: 5343
    • Liter: 5.3
    • Aspiration: N
    • SubModel: SAFARI
    • CUI: 326
    • EngineType: V8 ( 5.3 L / 326 )

    1968-1969 PONTIAC EXECUTIVE

    • CC: 7014
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 428
    • EngineType: V8 ( 7.0 L / 428 )

    1980-1981 BUICK REGAL

    • Liter: 4.3
    • SubModel: LIMITED
    • CUI: 265
    • EngineType: V8 ( 4.3 L / 265 )

    1975 OLDSMOBILE TORONADO

    • EngineType: ALL
    • SubModel: BROUGHAM

    1975-1976 PONTIAC FIREBIRD

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

    1957 PONTIAC CHIEFTAIN

    • EngineType: ALL
    • SubModel: CUSTOM SAFARI

    1980 BUICK CENTURY

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1977 PONTIAC FIREBIRD

    • Liter: 4.9
    • SubModel: ESPRIT
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1970 PONTIAC EXECUTIVE

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

    1972-1973 PONTIAC FIREBIRD

    • CC: 6555
    • Liter: 6.6
    • Aspiration: N
    • SubModel: TRANS AM
    • Engine Vin: T
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1968-1970 PONTIAC EXECUTIVE

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

    1975 PONTIAC FIREBIRD

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

    1974 PONTIAC CATALINA

    • CC: 6555
    • Liter: 6.6
    • Aspiration: N
    • SubModel: SAFARI
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977 PONTIAC GRAND LEMANS

    • Liter: 6.6
    • SubModel: SAFARI
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1974 OLDSMOBILE CUTLASS

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

    1973-1974 PONTIAC LEMANS

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

    1979-1980 BUICK REGAL

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1975 PONTIAC GRAND LEMANS

    • Liter: 6.6
    • SubModel: SAFARI
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977-1978 PONTIAC GRAND PRIX

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1967 PONTIAC FIREBIRD

    • EngineType: ALL
    • SubModel: HO

    1977-1980 PONTIAC BONNEVILLE

    • Liter: 4.9
    • SubModel: BROUGHAM
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1973 PONTIAC GRAND PRIX

    • CC: 7457
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1975 PONTIAC CATALINA

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

    1971 PONTIAC LEMANS

    • CC: 5733
    • Liter: 5.7
    • SubModel: T37
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977 PONTIAC GRAND PRIX

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

    1971 PONTIAC LEMANS

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

    1977 BUICK LESABRE

    • Liter: 4.9
    • SubModel: CUSTOM SPORT
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1970-1974 PONTIAC BONNEVILLE

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

    1969-1970 PONTIAC LEMANS

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

    1968-1969 PONTIAC FIREBIRD

    • EngineType: ALL
    • SubModel: 350

    1975 PONTIAC FIREBIRD

    • Liter: 6.6
    • SubModel: FORMULA
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975-1977 PONTIAC GRAND LEMANS

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

    1977 PONTIAC FIREBIRD

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

    1974 PONTIAC FIREBIRD

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

    1972-1973 PONTIAC VENTURA

    • CC: 5733
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976 PONTIAC CATALINA

    • EngineType: ALL
    • SubModel: ALL

    1972-1973 PONTIAC FIREBIRD

    • CC: 6555
    • Liter: 6.6
    • Aspiration: N
    • SubModel: ESPRIT
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1966 PONTIAC CATALINA

    • EngineType: ALL
    • SubModel: 2+2

    1977-1980 PONTIAC CATALINA

    • Liter: 4.9
    • SubModel: SAFARI
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1963 PONTIAC TEMPEST

    • CC: 5343
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 326
    • EngineType: V8 ( 5.3 L / 326 )

    1977 PONTIAC FIREBIRD

    • Liter: 4.9
    • SubModel: FORMULA
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1979-1981 PONTIAC FIREBIRD

    • Liter: 4.9
    • SubModel: TRANS AM
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1981 PONTIAC LEMANS

    • Liter: 4.9
    • SubModel: SAFARI
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1968-1970 PONTIAC LEMANS

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

    1972 PONTIAC GRAND SAFARI

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

    1963-1964 PONTIAC TEMPEST

    • CC: 5343
    • Liter: 5.3
    • SubModel: SAFARI
    • CUI: 326
    • EngineType: V8 ( 5.3 L / 326 )

    1979 BUICK CENTURY

    • Liter: 4.9
    • SubModel: CUSTOM
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1967-1968 PONTIAC GRAND PRIX

    • CC: 7014
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 428
    • EngineType: V8 ( 7.0 L / 428 )

    1967 PONTIAC EXECUTIVE

    • EngineType: ALL
    • SubModel: ALL

    1975 PONTIAC GRAND PRIX

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

    1975 OLDSMOBILE CUSTOM CRUISER

    • Liter: 6.6
    • SubModel: PANEL
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975-1976 PONTIAC GRAND SAFARI

    • EngineType: ALL
    • SubModel: ALL

    1961 PONTIAC VENTURA

    • CC: 6376
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1976 PONTIAC LEMANS

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

    1959 PONTIAC BONNEVILLE

    • EngineType: ALL
    • SubModel: BASE

    1977 PONTIAC GRAND PRIX

    • Liter: 6.6
    • SubModel: LJ
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977-1978 PONTIAC GRAND SAFARI

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

    1977 PONTIAC LEMANS

    • Liter: 4.9
    • SubModel: SPORT
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1974 PONTIAC FIREBIRD

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

    1977-1980 PONTIAC CATALINA

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1968-1970 PONTIAC EXECUTIVE

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

    1972-1974 PONTIAC CATALINA

    • CC: 7457
    • Liter: 7.5
    • SubModel: SAFARI
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1958 PONTIAC STAR CHIEF

    • EngineType: ALL
    • SubModel: CUSTOM SAFARI

    1974 OLDSMOBILE CUTLASS SUPREME

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

    1980 PONTIAC GRAND PRIX

    • Liter: 4.9
    • SubModel: SJ
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1977-1980 BUICK LESABRE

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1974 PONTIAC GRAND PRIX

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

    1964-1965 PONTIAC TEMPEST

    • CC: 5343
    • Liter: 5.3
    • SubModel: CUSTOM
    • CUI: 326
    • EngineType: V8 ( 5.3 L / 326 )

    1975 OLDSMOBILE CUSTOM CRUISER

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

    1979 PONTIAC LEMANS

    • Liter: 4.9
    • SubModel: SAFARI
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1963-1966 PONTIAC STAR CHIEF

    • EngineType: ALL
    • SubModel: ALL

    1977-1978 PONTIAC CATALINA

    • Liter: 6.6
    • SubModel: SAFARI
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977 PONTIAC GRAND LEMANS

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1976 PONTIAC GRAND PRIX

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

    1971 PONTIAC GRAND SAFARI

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

    1971 PONTIAC LEMANS

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

    1975 PONTIAC GRAND LEMANS

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

    1955 PONTIAC STAR CHIEF

    • CC: 4707
    • Liter: 4.7
    • SubModel: BASE
    • CUI: 287
    • EngineType: V8 ( 4.7 L / 287 )

    1958 PONTIAC STAR CHIEF

    • EngineType: ALL
    • SubModel: SUPER DELUXE

    1979 OLDSMOBILE DELTA 88

    • Liter: 4.9
    • SubModel: ROYALE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1976 PONTIAC GRAND PRIX

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

    1975 PONTIAC BONNEVILLE

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

    1971 PONTIAC LEMANS

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

    1979-1980 BUICK CENTURY

    • Liter: 4.9
    • SubModel: LIMITED
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    Items You Need

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    Tools:

    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.