Anyone know what the stock specs are for LT1 valve springs....OD and installed height? Thanx

 

From memory I believe the OD is 1.25". The installed height of a spring is more a function of spring pressure desired with the cam involved. I don't recall the oem install height, but it is probably in the 1.65-1.75" range. I sure some will come along with the exact oem info. I don't have my reference material at this location.