[Rick Parker]

If specs call for Hot Lash, do it. Each cam grind is a little different, thus the lash specs are too. The ramps on the lobes are more aggresive on cams with a lot of lift and duration and a less aggresive on milder cams thus different lash specs. For those that dislike or find it difficult to work on a hot engine: If the lash calls for it to be set while hot, it can then be measured when "cold" and then set cold and that dimension (cold measurement) in the future.
I like to set one side as quickly as possible while hot, put the valve cover back on, restart the engine to get it back to full temp and then do the other side.

I just like the old school noise the solids evoke.