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QualCast, LLC 52-65900
Spring, High Performance Engine Valve Spring Inside Diameter 0.636T Outside Diameter 1.050T Closed Pressure 80 @1.640 Open Pressure 185 @1.090
S. B. International, Inc. 160-1220
SBI Valve Spring. Specifications: Closed Pressure: 40@1.812, Coils / Turn Direction: 7.50 RH, I.D: 1.010, Length: 2.313, O.D.: 1.306, Open Pressure: 70@1.437, Solid Height: 1.110, Wire Diameter: 0.148.
S. B. International, Inc. 051-290
SBI Valve Spring. Precision-manufactured valve train component by S.B. International, Inc.
QualCast, LLC 32-906
Spring Engine Valve Spring Inside Diameter 1.000/1.020 Outside Diameter 1.364/1.384 Closed Pressure 56-66 @ 1.730 Open Pressure 173-193 @ 1.280
QualCast, LLC 52-65900SK
Spring Kit, High Performance Engine Valve Spring Kit Title Performance Kit with 16 Springs, 16 Retainers, and 32 Keepers Outside Diameter 1.050T Closed Pressure 80 @1.640 Open Pressure 185 @1.090
S. B. International, Inc. 160-1223
SBI Valve Spring. Specifications: Closed Pressure: 61@1.875, Coils / Turn Direction: 8.30 RH, I.D: 0.968, Length: 2.375, O.D.: 1.292, Open Pressure: 119@1.521, Solid Height: 1.344, Wire Diameter: 0.162.
PAC Racing Springs PAC-1357-16
VALVE SPRING ASSY DRAG RACE; 0.726 in. ID - 1.500 in. OD - 2.150 in. installed Height - 0.950 in. Max Valve Lift
