bee hive springs started early aircraft engines-


Auto in later 1990s on GM LS , Ford Mod, and Mopar Hemi------I don't remember which series/size LS that I first saw them OEM, but have used a lot from the aftermarket----the smaller retainer and the ultra skinny stems (as small as 6 mm) have really lowered the weight of the valve train on the rocker side-----




and welcome to chr