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618-100 - COMP Cams Valve Spring Retainer Lock

This part should fit your vehicle. It is a universal part.

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Part #: 618-100
Notes: Super Locks
w/ Lash Cap Recess
Bulk, 100 Pieces
MSRP: $177.35
Your Price: $134.96
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Specs

Lock Angle 10°
Valve Stem Size .310"

This Item Also Available In

Part Number Price Notes & Specs
600-16 $14.75 Notes Hardened Steel Street Locks
Single Groove
16 Pieces
Lock Angle
Valve Stem Size 5/16"
602-1 $0.83 Notes Hardened Steel Street Locks
2 Groove
Single Piece
Lock Angle
Valve Stem Size 3/8"
630-1 $4.63 Notes Super Locks
-.050 Inst. Ht. w/ Lash Cap Recess
Single Piece
Lock Angle 10°
Valve Stem Size 11/32"
630-16 $29.19 Notes Super Locks
-.050 Inst. Ht. w/ Lash Cap Recess
16 Pieces
Lock Angle 10°
Valve Stem Size 11/32"
637-8 $99.35 Notes Titanium Super Locks
w/ Lash Cap Recess
8 Pieces
Lock Angle 10°
Valve Stem Size 5/16"
638-1 $15.78 Notes Titanium Super Locks
w/ Lash Cap Recess
Single Piece
Lock Angle 10°
Valve Stem Size 11/32"
641-100 $145.10 Notes Machined Steel Race Locks
Single Groove
Bulk, 100 Pieces
Lock Angle
Valve Stem Size 3/8"
602-12 $14.07 Notes Hardened Steel Street Locks
2 Groove
12 Pieces
Lock Angle
Valve Stem Size 3/8"
618-1 $1.73 Notes Super Locks
w/ Lash Cap Recess
Single Piece
Lock Angle 10°
Valve Stem Size .310"
624-16 $38.25 Notes Super Locks
4 Groove
16 Pieces
Lock Angle 10°
Valve Stem Size 11/32"
629-16 $35.27 Notes Machined Steel Race Locks
Single Groove
16 Pieces
Lock Angle
Valve Stem Size 5.5mm
632-100 $198.64 Notes Super Locks
Bead Lock
Bulk, 100 Pieces
Lock Angle 10°
Valve Stem Size 8mm
638-12 $146.99 Notes Titanium Super Locks
w/ Lash Cap Recess
12 Pieces
Lock Angle 10°
Valve Stem Size 11/32"
605-16 $15.52 Notes Hardened Steel Street Locks
4 Groove
16 Pieces
Lock Angle
Valve Stem Size 11/32"
609-1 $3.76 Notes Super Locks
-.050 Inst. Ht. w/ Lash Cap Recess
Single Piece
Lock Angle 10°
Valve Stem Size 3/8"
614-12 $21.99 Notes Super Locks
+.050" Inst. Ht. w/o Lash Cap Recess
12 Pieces
Lock Angle 10°
Valve Stem Size 11/32"
618-4 $9.24 Notes Super Locks
w/ Lash Cap Recess
4Pieces
Lock Angle 10°
Valve Stem Size .310"
625-100 $223.52 Notes Super Locks
2 Groove
Bulk, 100 Pieces
Lock Angle 10°
Valve Stem Size 3/8"
600-12 $13.43 Notes Hardened Steel Street Locks
Single Groove
12 Pieces
Lock Angle
Valve Stem Size 5/16"
609-100 $164.71 Notes Super Locks
-.050 Inst. Ht. w/ Lash Cap Recess
Bulk, 100 Pieces
Lock Angle 10°
Valve Stem Size 3/8"
616-4 $10.05 Notes Super Locks
+.050" Inst. Ht. w/o Lash Cap Recess
4Pieces
Lock Angle 10°
Valve Stem Size 3/8"
617-4 $9.24 Notes Super Locks
w/o Lash Cap Recess
4Pieces
Lock Angle 10°
Valve Stem Size .310"
629-32 $62.42 Notes Machined Steel Race Locks
Single Groove
32 Pieces
Lock Angle
Valve Stem Size 5.5mm
630-12 $27.78 Notes Super Locks
-.050 Inst. Ht. w/ Lash Cap Recess
12 Pieces
Lock Angle 10°
Valve Stem Size 11/32"
636-1 $14.89 Notes Titanium Super Locks
Single Piece
Lock Angle
Valve Stem Size 11/32"

All Fitments

UNIVERSAL
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
0 - 0 NON APPLICATION SPECIFIC ALL ALL ALL ALL ALL ALL

Product Description

Most people believe that the tang inside a valve lock holds the retainer and valve spring in place while the engine is running, but this isn’t 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.

With the emergence of valve sizes other than the standard 5/16”, 11/32” and 3/8”, it is important to make sure the 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 O.D. of the stem, the locks are too small.

Our line of stock replacement 7° valve locks for stock engine rebuilds are recommended only for street applications with lighter valve spring loads and are stamped and hardened for superior wear resistance. Also available are machined 7° locks and titanium Super 7º Locks for some applications. They offer the same valve spring location accuracy as our Super Locks™ without the need to change to 10° retainers.

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