All LSM on Head Valve Spring Compressors have a tapered flange retainer housing that can fit springs as small as 0.800" up to 1.600". And they can easily and safely handle 1,000 pounds of seat pressure with our screw down method that will not spin back. Plus, you won't need an extra set of hands so you don't lose your keepers. No need to take off the pedestals - our compressors bolt right to the stands!
SC-800 is for all 7/16" stud mount rocker systems, with 3/8" adapter available. Perfect for a crate motor!