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VALVE LOCK, 3/8" SINGLE GROOVE

COMP Cams Part number: 603-1 In stock
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$5.21
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Availability: In stock
Part number: 603-1
Manufacturer: COMP Cams
COMP Cams Valve Lock 3/8in Single Groove
In stock — usually ships within 1 business day

lock angle and 3/8" valve stem size is a perfect replacement lock for stock engine rebuilds. It is recommended only for street Applications with lighter valve spring loads. It is critically important to make sure valve locks match the 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 fit together without a gap, they are too large. If the locks fit tight to the stem and leave a gap between the middle of the lock and the OD of the stem, the locks are too small. Most people believe that the tang inside a valve lock Oldsmobile the retainer and valve spring in place while the engine is running. This is not the case. The cross-section of material in the tang is not strong enough to withstand open spring loads of 1000 lbs. or more. The sole purpose of the tang 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 a "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.

Valve Lock; Keeper; Retainer Lock; 10 Degree; 7 Degree; Steel Retainer; 1 Groove; Valve Keeper; Valve Keeper Set; Valve Lock Set; Locks

Angle, 3/8" Stem Size. This hardened Steel, single groove Steel Street Lock with 7&deg

1 Pair Steel Street Lock: 1 Groove, 7 Degree Angle, 3/8" Stem Size

Includes 1 Pair of hardened Steel Street Locks: 1 Groove, 7&deg

Hardened Steel 7 Degree, 3/8", Single Groove Street Lock

COMP Cams Valve Lock 3/8in Single Groove

Steel 7 Deg 3/8" Single Grv Street Lock

Engine Valve Spring Retainer Keeper

VALVE LOCK, 3/8" SINGLE GROOVE

SpringRetainerKeeper

None

1912 vehicle listings Source data lists this part for the vehicles shown below. Confirm engine, drivetrain, position, and other options before ordering.
1963 15 listings
Ford 300 Base
Ford Country Sedan Base
Ford Country Squire Base
Ford Galaxie Base
Ford Galaxie 500 Base
Ford Galaxie 500 Sunliner
Ford Galaxie 500 Victoria
Ford Galaxie 500 XL
Ford Ranch Wagon Base
Ford Thunderbird Base
Mercury Colony Park Base
Mercury Marauder Base
Mercury Monterey Base
Mercury Monterey Custom
Mercury Monterey S-55
1964 24 listings
American Motors American 440H
American Motors American Base
American Motors Classic 770
American Motors Classic Base
Ford Country Sedan Base
Ford Country Squire Base
Ford Custom Base
Ford Custom 500 Base
Ford F-350 Base
Ford Fairlane 500
Ford Fairlane Base
Ford Galaxie Base
Ford Galaxie 500 Base
Ford Galaxie 500 Sunliner
Ford Galaxie 500 Victoria
Ford Galaxie 500 XL
Ford Ranch Wagon Base
Ford Thunderbird Base
Mercury Colony Park Base
Mercury Commuter Base
Mercury Marauder Base
Mercury Montclair Base
Mercury Monterey Base
Mercury Park Lane Base
1965 37 listings
American Motors Ambassador 990
American Motors Ambassador Base
American Motors American 440
American Motors American Base
American Motors Classic 660
American Motors Classic 770
American Motors Classic Base
American Motors Marlin Base
Chevrolet Bel Air Base
Chevrolet Biscayne Base
Chevrolet Chevelle Base
Chevrolet Chevelle SS
Chevrolet Impala Base
Chevrolet Impala SS
Ford Country Sedan Base
Ford Country Squire Base
Ford Custom Base
Ford Custom 500 Base
Ford F-350 Base
Ford Fairlane 500
Ford Fairlane Base
Ford Galaxie Base
Ford Galaxie 500 Base
Ford Galaxie 500 XL
Ford LTD Base
Ford Ranch Wagon Base
Ford Thunderbird Base
Mercury Caliente Base
Mercury Colony Park Base
Mercury Comet Base
Mercury Commuter Base
Mercury Cyclone Base
Mercury Marauder Base
Mercury Montclair Base
Mercury Monterey Base
Mercury Park Lane Base
Mercury Villager Base
1966 44 listings
American Motors Ambassador 990
American Motors Ambassador Base
American Motors Ambassador DPL
American Motors American 440
American Motors American Base
American Motors Classic 770
American Motors Classic Base
American Motors Marlin Base
Chevrolet Bel Air Base
Chevrolet Biscayne Base
Chevrolet Caprice Base
Chevrolet Chevelle Base
Chevrolet Chevelle SS
Chevrolet Corvette Base
Chevrolet El Camino Base
Chevrolet Impala Base
Chevrolet Impala SS
Chevrolet Malibu Base
Ford Country Sedan Base
Ford Country Squire Base
Ford Custom Base
Ford Custom 500 Base
Ford F-350 Base
Ford Fairlane 500
Ford Fairlane 500XL
Ford Fairlane Base
Ford Galaxie Base
Ford Galaxie 500 Base
Ford Galaxie 500 XL
Ford LTD Base
Ford Ranch Wagon Base
Ford Thunderbird Base
Mercury Caliente Base
Mercury Colony Park Base
Mercury Comet Base
Mercury Commuter Base
Mercury Cyclone Base
Mercury Marauder Base
Mercury Montclair Base
Mercury Monterey Base
Mercury Monterey S-55
Mercury Park Lane Base
Mercury Villager Base
Mercury Voyager Base
1967 56 listings
American Motors Ambassador 990
American Motors Ambassador Base
American Motors Ambassador DPL
American Motors American 440
American Motors American Base
American Motors American Rogue
American Motors Marlin Base
American Motors Rebel 770
American Motors Rebel Base
American Motors Rebel SST
Chevrolet Bel Air Base
Chevrolet Biscayne Base
Chevrolet Camaro Base
Chevrolet Camaro RS
Chevrolet Camaro SS
Chevrolet Caprice Base
Chevrolet Chevelle Base
Chevrolet Chevelle Concours
Chevrolet Chevelle Deluxe
Chevrolet Chevelle SS
Chevrolet Corvette Base
Chevrolet El Camino Base
Chevrolet Impala Base
Chevrolet Impala SS
Chevrolet Malibu Base
Ford Country Sedan Base
Ford Country Squire Base
Ford Custom Base
Ford Custom 500 Base
Ford Fairlane 500
Ford Fairlane 500XL
Ford Fairlane Base
Ford Galaxie Base
Ford Galaxie 500 Base
Ford Galaxie 500 XL
Ford LTD Base
Ford Mustang Base
Ford Ranch Wagon Base
Ford Ranchero Base
Ford Thunderbird Base
Mercury Brougham Base
Mercury Caliente Base
Mercury Colony Park Base
Mercury Comet Base
Mercury Commuter Base
Mercury Cougar Base
Mercury Cougar XR-7
Mercury Cyclone Base
Mercury Marauder Base
Mercury Marquis Base
Mercury Montclair Base
Mercury Monterey Base
Mercury Monterey S-55
Mercury Park Lane Base
Mercury Villager Base
Mercury Voyager Base
1968 74 listings
American Motors Ambassador Base
American Motors Ambassador DPL
American Motors Ambassador SST
American Motors American 440
American Motors American Base
American Motors American Rogue
American Motors AMX Base
American Motors Javelin Base
American Motors Javelin SST
American Motors Rebel 550
American Motors Rebel 770
American Motors Rebel SST
Chevrolet Bel Air Base
Chevrolet Biscayne Base
Chevrolet C10 Pickup Base
Chevrolet C10 Suburban Base
Chevrolet C20 Pickup Base
Chevrolet C20 Suburban Base
Chevrolet C30 Pickup Base
Chevrolet Camaro Base
Chevrolet Camaro SS
Chevrolet Caprice Base
Chevrolet Chevelle 300
Chevrolet Chevelle 300 Deluxe
Chevrolet Chevelle Concours
Chevrolet Chevelle Malibu
Chevrolet Chevelle Nomad
Chevrolet Chevelle SS
Chevrolet Chevy II Nova
Chevrolet Corvette Base
Chevrolet El Camino Base
Chevrolet El Camino Custom
Chevrolet El Camino SS
Chevrolet Impala Base
Chevrolet K10 Pickup Base
Chevrolet K10 Suburban Base
Chevrolet K20 Pickup Base
Chevrolet K30 Pickup Base
Ford Country Sedan Base
Ford Country Squire Base
Ford Custom Base
Ford Custom 500 Base
Ford F-350 Base
Ford Fairlane 500
Ford Fairlane Base
Ford Galaxie 500 Base
Ford Galaxie 500 XL
Ford LTD Base
Ford Mustang Base
Ford Mustang Shelby GT-500
Ford Mustang Shelby GT-500KR
Ford Ranch Wagon Base
Ford Ranchero 500
Ford Ranchero Base
Ford Ranchero GT
Ford Thunderbird Base
Ford Torino Base
Ford Torino GT
GMC C15/C1500 Pickup Base
GMC C15/C1500 Suburban Base
GMC C25/C2500 Pickup Base
GMC C25/C2500 Suburban Base
GMC C35/C3500 Pickup Base
GMC K15/K1500 Pickup Base
GMC K15/K1500 Suburban Base
GMC K25/K2500 Pickup Base
GMC K25/K2500 Suburban Base
GMC K35/K3500 Pickup Base
Mercury Colony Park Base
Mercury Comet Base
Mercury Commuter Base
Mercury Cougar Base
Mercury Cougar XR-7
Mercury Cyclone Base

This product has more vehicle listings than shown here. Use the garage selector or contact us with your complete vehicle details before ordering.

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