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For big dual springs, it's best to step up to the new generation of 10-degree retainers and locks (left) that offer a larger locking surface to the retainer. These larger keepers can only be used with matching 10-degree retainers.
Valve Training

For big dual springs, it's best to step up to the new generation of 10-degree retainers and locks (left) that offer a larger locking surface to the retainer. These larger keepers can only be used with matching 10-degree retainers.  View Related Article

 

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