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COMP Cams 603-1

Steel Street Valve Locks Angle: 7°

COMP Cams 603-1

249-603-1

jegs shipping
Ships 12/05/16 if Ordered Today
COMP Cams 603-1 Steel Street Valve Locks Angle: 7° $1.69
Steel Street Valve Locks
  • Angle: 7°
  • Valve Stem: 3/8"
  • Single Groove
  • 1/pkg

  • COMP Cams 603-1 Details

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

  • Specifications:

    Lock Angle
    7 Deg.
    Lock Groove Quantity
    1-groove
    Lock Material
    Hardened steel
    Lock Style
    7 degree
    Manufacturing Process
    Stamped
    Quantity
    Sold as a pair
    Recessed for Lash Cap
    No
    Valve Stem Diameter (in.)
    0.372
    Manufacturer's Part Number:
    603-1

    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 603-1 fit your vehicle?

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    1968 FORD RANCH WAGON

    • CC: 6391
    • Fitment_Note: 50-State Legal
    • Liter: 6.4
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )

    1979 JEEP CJ7

    • Fitment_Note: 50-State Legal
    • EngineType: ALL
    • SubModel: RENEGADE

    1991-1995 CHEVROLET K2500 PICKUP

    • Fitment_Note: 50-State Legal~Use Appropriate Valve Locks; Retainers; Seals
    • Liter: 7.4
    • SubModel: CHEYENNE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1970-1971 CHEVROLET CAPRICE

    • CC: 7441
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1969 MERCURY CYCLONE

    • CC: 7030
    • Fitment_Note: 50-State Legal
    • Liter: 7.0
    • SubModel: CJ
    • CUI: 429
    • EngineType: V8 ( 7.0 L / 429 )

    1964-1965 AMERICAN MOTORS CLASSIC

    • CC: 3802
    • Fitment_Note: 50-State Legal
    • Liter: 3.8
    • SubModel: 770
    • CUI: 232
    • EngineType: L6 ( 3.8 L / 232 )

    1982 CHEVROLET C20 SUBURBAN

    • Liter: 7.4
    • SubModel: SCOTTSDALE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975-1976 FORD F-150

    • Fitment_Note: 50-State Legal
    • Liter: 6.4
    • SubModel: CUSTOM
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )

    1975-1980 CHEVROLET C10 PICKUP

    • Liter: 7.4
    • SubModel: SCOTTSDALE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1968-1969 AMERICAN MOTORS JAVELIN

    • CC: 6391
    • Fitment_Note: 50-State Legal
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )

    1969-1974 FORD F-100

    • Fitment_Note: 50-State Legal
    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1970-1971 CHEVROLET C20 PICKUP

    • CC: 6588
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1967-1968 AMERICAN MOTORS AMERICAN

    • CC: 4753
    • Fitment_Note: 50-State Legal
    • Liter: 4.7
    • SubModel: BASE
    • CUI: 290
    • EngineType: V8 ( 4.7 L / 290 )

    1976 FORD F-350

    • Fitment_Note: 50-State Legal
    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1972 CHEVROLET KINGSWOOD

    • CC: 7441
    • Liter: 7.4
    • SubModel: ESTATE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1969 FORD GALAXIE 500

    • Fitment_Note: 50-State Legal
    • Liter: 7.0
    • SubModel: XL
    • CUI: 429
    • EngineType: V8 ( 7.0 L / 429 )

    1964-1966 FORD CUSTOM

    • Fitment_Note: 50-State Legal
    • Liter: 5.8
    • SubModel: BASE
    • CUI: 352
    • EngineType: V8 ( 5.8 L / 352 )

    1972-1973 INTERNATIONAL PICKUP 1210

    • CC: 6425
    • Fitment_Note: 50-State Legal
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    1968 GMC K25/K2500 SUBURBAN

    • CC: 6489
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1975-1976 GMC G25/G2500 VAN

    • Liter: 7.4
    • SubModel: RALLY
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1968 FORD FAIRLANE

    • CC: 6997
    • Fitment_Note: 50-State Legal
    • Liter: 7.0
    • SubModel: 500
    • CUI: 427
    • EngineType: V8 ( 7.0 L / 427 )

    1984 JEEP GRAND WAGONEER

    • Fitment_Note: 50-State Legal
    • EngineType: ALL
    • SubModel: LIMITED

    1966 FORD FAIRLANE

    • Fitment_Note: 50-State Legal
    • Liter: 5.8
    • SubModel: 500XL
    • CUI: 352
    • EngineType: V8 ( 5.8 L / 352 )

    1975-1986 CHEVROLET C30 PICKUP

    • Liter: 7.4
    • SubModel: SCOTTSDALE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1968-1969 AMERICAN MOTORS JAVELIN

    • CC: 3802
    • Fitment_Note: 50-State Legal
    • Liter: 3.8
    • SubModel: BASE
    • CUI: 232
    • EngineType: L6 ( 3.8 L / 232 )

    1964-1966 FORD CUSTOM 500

    • Fitment_Note: 50-State Legal
    • Liter: 5.8
    • SubModel: BASE
    • CUI: 352
    • EngineType: V8 ( 5.8 L / 352 )

    1979 AMERICAN MOTORS PACER

    • Fitment_Note: 50-State Legal
    • EngineType: ALL
    • SubModel: LIMITED

    1975-1978 GMC C25 SUBURBAN

    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1978-1980 GMC C1500 PICKUP

    • Liter: 7.4
    • SubModel: STREET COUPE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1977 CHEVROLET K30 PICKUP

    • Liter: 7.4
    • SubModel: SILVERADO
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1963-1964 FORD COUNTRY SQUIRE

    • CC: 6391
    • Fitment_Note: 50-State Legal
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )

    1968 FORD F-350

    • CC: 5900
    • Fitment_Note: 50-State Legal
    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1963 FORD THUNDERBIRD

    • CC: 6997
    • Fitment_Note: 50-State Legal
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8 ( 7.0 L / 427 )

    1968-1969 AMERICAN MOTORS AMBASSADOR

    • CC: 5585
    • Fitment_Note: 50-State Legal
    • Liter: 5.6
    • SubModel: DPL
    • CUI: 343
    • EngineType: V8 ( 5.6 L / 343 )

    1968 AMERICAN MOTORS REBEL

    • Fitment_Note: 50-State Legal
    • Liter: 5.6
    • SubModel: 550
    • CUI: 343
    • EngineType: V8 ( 5.6 L / 343 )

    1969 CHEVROLET CAMARO

    • Liter: 7.0
    • SubModel: RS
    • CUI: 427
    • EngineType: V8 ( 7.0 L / 427 )

    1968 GMC C35/C3500 PICKUP

    • CC: 6489
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1980-1986 CHEVROLET K30 PICKUP

    • Liter: 7.4
    • SubModel: SILVERADO
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1970 CHEVROLET MONTE CARLO

    • CC: 6588
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1972 GMC C35/C3500 PICKUP

    • CC: 6588
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1970 MERCURY MONTEREY

    • CC: 7030
    • Fitment_Note: 50-State Legal
    • Liter: 7.0
    • SubModel: CUSTOM
    • CUI: 429
    • EngineType: V8 ( 7.0 L / 429 )

    1967 FORD GALAXIE

    • Fitment_Note: 50-State Legal
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8 ( 7.0 L / 427 )

    1971-1974 AMERICAN MOTORS HORNET

    • CC: 3802
    • Fitment_Note: 50-State Legal
    • Liter: 3.8
    • SubModel: SPORTABOUT
    • CUI: 232
    • EngineType: L6 ( 3.8 L / 232 )

    1966-1967 MERCURY MONTEREY

    • CC: 7014
    • Fitment_Note: 50-State Legal
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 428
    • EngineType: V8 ( 7.0 L / 428 )

    1969 CHEVROLET NOVA

    • CC: 6489
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1976 FORD F-100

    • Fitment_Note: 50-State Legal
    • Liter: 6.4
    • SubModel: CUSTOM
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )

    1963-1967 FORD GALAXIE 500

    • Fitment_Note: 50-State Legal
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )

    1988-1995 GMC K3500 PICKUP

    • Liter: 7.4
    • SubModel: SIERRA SLE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1985-1991 JEEP GRAND WAGONEER

    • Fitment_Note: 50-State Legal
    • EngineType: ALL
    • SubModel: ALL

    1967 AMERICAN MOTORS MARLIN

    • Fitment_Note: 50-State Legal
    • EngineType: ALL
    • SubModel: ALL

    1979 AMERICAN MOTORS SPIRIT

    • CC: 3802
    • Fitment_Note: 50-State Legal
    • Liter: 3.8
    • SubModel: BASE
    • CUI: 232
    • EngineType: L6 ( 3.8 L / 232 )

    1974 FORD M-450 PICKUP

    • Fitment_Note: 50-State Legal
    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1969 MERCURY MARAUDER

    • CC: 6391
    • Fitment_Note: 50-State Legal
    • Liter: 6.4
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: X
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )

    1976-1978 INTERNATIONAL SCOUT II

    • Fitment_Note: 50-State Legal
    • Liter: 5.0
    • SubModel: TRAVELER
    • CUI: 304
    • EngineType: V8 ( 5.0 L / 304 )

    1969 GMC K25/K2500 PICKUP

    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1973-1974 GMC SPRINT

    • Liter: 7.4
    • SubModel: CUSTOM
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1973-1974 CHEVROLET K20 PICKUP

    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976 FORD F-150

    • Fitment_Note: 50-State Legal
    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1966-1967 CHEVROLET CAPRICE

    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8 ( 7.0 L / 427 )

    1970 CHEVROLET KINGSWOOD

    • CC: 7441
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1972 CHEVROLET CHEVELLE

    • CC: 6588
    • Liter: 6.6
    • SubModel: NOMAD
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1969-1971 FORD CUSTOM

    • CC: 6391
    • Fitment_Note: 50-State Legal
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )

    1979-1982 AMERICAN MOTORS CONCORD

    • Fitment_Note: 50-State Legal
    • Liter: 4.2
    • SubModel: DL
    • CUI: 258
    • EngineType: L6 ( 4.2 L / 258 )

    1971 INTERNATIONAL SCOUT II

    • Fitment_Note: 50-State Legal
    • Liter: 5.6
    • SubModel: BASE
    • CUI: 345
    • EngineType: V8 ( 5.6 L / 345 )

    1989-1991 CHEVROLET R2500 SUBURBAN

    • Fitment_Note: 50-State Legal~Use Appropriate Valve Locks; Retainers; Seals
    • Liter: 7.4
    • SubModel: SILVERADO
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1988-1996 CHEVROLET G30 VAN

    • Fitment_Note: 50-State Legal~Use Appropriate Valve Locks; Retainers; Seals
    • Liter: 7.4
    • SubModel: CHEVY VAN
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1971-1972 CHEVROLET KINGSWOOD

    • CC: 6588
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1972-1975 JEEP CJ6

    • Fitment_Note: 50-State Legal
    • EngineType: ALL
    • SubModel: ALL

    1992-1995 GMC C2500 SUBURBAN

    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1969-1974 FORD F-350

    • Fitment_Note: 50-State Legal
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )

    1979-1983 GMC C3500 PICKUP

    • Liter: 7.4
    • SubModel: HIGH SIERRA
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979 JEEP CJ7

    • Fitment_Note: 50-State Legal
    • EngineType: ALL
    • SubModel: GOLDEN EAGLE

    1990-1991 GMC V3500 PICKUP

    • Liter: 7.4
    • SubModel: SLE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1966 AMERICAN MOTORS AMBASSADOR

    • CC: 5358
    • Fitment_Note: 50-State Legal
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1970 FORD MUSTANG

    • CC: 7014
    • Fitment_Note: 50-State Legal
    • Liter: 7.0
    • Aspiration: N
    • SubModel: MACH I
    • Engine Vin: R
    • CUI: 428
    • EngineType: V8 ( 7.0 L / 428 )

    1966 AMERICAN MOTORS CLASSIC

    • Fitment_Note: 50-State Legal
    • EngineType: ALL
    • SubModel: 770

    1973-1980 GMC C1500 PICKUP

    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1978 INTERNATIONAL SCOUT II

    • Fitment_Note: 50-State Legal
    • Liter: 5.6
    • SubModel: SS2
    • CUI: 345
    • EngineType: V8 ( 5.6 L / 345 )

    1964-1966 FORD F-350

    • CC: 5917
    • Fitment_Note: 50-State Legal
    • Liter: 5.9
    • SubModel: BASE
    • CUI: 361
    • EngineType: V8 ( 5.9 L / 361 )

    1970-1971 GMC C35/C3500 PICKUP

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1982-1984 JEEP SCRAMBLER

    • Fitment_Note: 50-State Legal
    • Liter: 4.2
    • SubModel: SR
    • CUI: 258
    • EngineType: L6 ( 4.2 L / 258 )

    1977-1980 GMC C1500 PICKUP

    • Liter: 7.4
    • SubModel: HEAVY HALF
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979-1986 GMC C2500 SUBURBAN

    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1974 CHEVROLET K10 PICKUP

    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1968 MERCURY PARK LANE

    • CC: 6391
    • Fitment_Note: 50-State Legal
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )

    1976 FORD F-100

    • Fitment_Note: 50-State Legal
    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1967 FORD FAIRLANE

    • Fitment_Note: 50-State Legal
    • Liter: 6.4
    • SubModel: 500XL
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )

    1968 FORD THUNDERBIRD

    • CC: 6391
    • Fitment_Note: 50-State Legal
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )

    1969 FORD RANCH WAGON

    • Fitment_Note: 50-State Legal
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )

    1966 MERCURY BREEZEWAY

    • CC: 7014
    • Fitment_Note: 50-State Legal
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 428
    • EngineType: V8 ( 7.0 L / 428 )

    1968 FORD F-100

    • CC: 6392
    • Fitment_Note: 50-State Legal
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )

    1969 FORD COUNTRY SQUIRE

    • Fitment_Note: 50-State Legal
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 429
    • EngineType: V8 ( 7.0 L / 429 )

    1967 AMERICAN MOTORS REBEL

    • Fitment_Note: 50-State Legal
    • EngineType: ALL
    • SubModel: ALL

    1971 AMERICAN MOTORS HORNET

    • Fitment_Note: 50-State Legal
    • EngineType: ALL
    • SubModel: SST

    1975 INTERNATIONAL SCOUT II

    • Fitment_Note: 50-State Legal
    • Liter: 5.0
    • SubModel: XLC
    • CUI: 304
    • EngineType: V8 ( 5.0 L / 304 )

    1973-1974 GMC K35/K3500 PICKUP

    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1970-1971 CHEVROLET CAMARO

    • CC: 6588
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1969-1974 FORD F-250

    • Fitment_Note: 50-State Legal
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )

    1965-1967 CHEVROLET IMPALA

    • Liter: 6.5
    • SubModel: SS
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1972 AMERICAN MOTORS JAVELIN

    • CC: 5900
    • Fitment_Note: 50-State Legal
    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )
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