GM LS1/LS6 VALVE SPRING
The 26915 is a better than stock replacment but has less load capacity than the 918.
Description:
1.055/1.290 single Beehive Ovate
I.D. .660/.885
Seat load 105@1.800
Open load 293@1.200
Coil bind 1.085
Rate in (lbs/in)313
Titanium Retainer 772
Steel retainer 774,783
This uses the stock spring seat and retainer.
Bell housings
Air & Fuel