Chevrolet Small Block - LS1/LT1 Valve Stem Size: 0.313 Diameter (A): 1.235 Out Step Diameter (B): 0.88 Inn Step Diameter (C): 0.611 References: Dble Spring. -7 Degree Pro CNC Retainer. Can be used with OEM Valve Lock, Ferrea Racing Spring # SS10042, S10048
and S10061 Ferrea Valve Lock # K10058
Chevrolet Small Block - LS1/LT1 Valve Stem Size: 0.313 Diameter (A): 1.21 Out Step Diameter (B): 0.927 Inn Step Diameter(C): 0.65 References: Dble Spring-7 Degree Pro CNC Retainer. Ferrea Racing Spring # S99100 and Ferrea Valve Lock # K10058
Chevrolet Small Block - LS1/LS7 (5/16 Conversion Kit) Valve Stem Size: 0.3125 Diameter (A): 1.21 Out Step Diameter (B): 0.927 Inn Step Diameter (C): 0.66 References: Dble Spring. Pro CNC Retainer. SUPER 7, Ferrea Racing Spring # S9910 and Ferrea Valve Lock #K10042
Chevrolet Small Block - L92 Valve Stem Size: 0.313 Diameter (A): 1.21 Out Step Diameter (B): 0.927 Inn Step Diameter: 0.65 References: Dble Spring. Pro CNC Retainer. 7 Degree, Ferrea Racing Spring # S99102 and Ferrea Valve Lock # K10058
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