LS1 Dual valve spring kit for all 1997 to 2004 LS1 engines. The spring is designed to handle up to .650” lift in the most extreme performance applications. Kit includes dual springs, valve seals, titanium retainers, and spring seats. No machining required.

The part number is 26921-kit from Comp Cams. I was going to use those on my 408 build but I finally bought some World Castings Warhawk ls1 cylinder heads and they come fully assembled.

Asking 395$ shipped to all 48 states. The kit sells for 559$ brand new.

 

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