CHEVROLET LS1. PAC-1204X RPM Series Dual Spring set of 16.
Premium quality Japanese spring steel wound in USA by PAC. Made with advanced heat treatment processing and surface finishing techniques (nano peening) to extend fatigue life.
High spring frequency to allow for better spring surge control at high rpm.
- Coil bind (spring solid height) 1.000″.
- RET135-16 is the matching Titanium retainer.
PAC 1204X Valve Spring Set
145lb at 1.800″ installed height. 385lb at 0.650″ valve lift.
- Coil bind (spring solid height) 1.000″.
PAC 1209X Dual Spring X 16
160lb at 1.800″ installed height. 485lb at 0.650″ valve lift.
- Coil bind (spring solid height) 1.000″.
- RET135-16 is the matching Titanium retainer.
PAC 1209X Valve Springs with Retainers
160lb at 1.800″ installed height. 485lb at 0.650″ valve lift.
Chevrolet LS1.
This kit includes PAC 1209X Dual Spring (x16), Kelford Titanium Retainer (x16), Steel Locator (x16) and Viton stem seal kit (x16).
Premium quality Japanese spring steel wound in USA by PAC. Made with advanced heat treatment processing and surface finishing techniques (nano peening) to extend fatigue life.
High spring frequency to allow for better spring surge control at high rpm.
- Coil bind (spring solid height) 1.000″