COMP Cams 1.640 O.D. Spring Shims .635 I.D. .030 Thickness AA0700AF1T55 Boost Reference Controlled

Boost Reference Controlled

020 in Undersize

Nitrous Bottle Heater Controller

1977-1979 Oldsmobile Omega

COMP Cams 1.640 O.D. Spring Shims .635 I.D. .030 Thickness AA0700AF1T55 Boost Reference ControlledEnsure the equal installed height of all of your valve springs with these 1. 640" outer diameter, . 030" thick, heat treated spring shims. Engine Valve Spring Shim Spring Shim, . 030 X 1. 640The COMP Cams philosophy has never changed: make the highest performing products possible and lead the industry in technological development. One thing COMP Cams has never forgotten: Performance is defined by what happens out on the race track. Because no matter