INTERRESTING i'm just now assembling a 270 and was wondering what would be a good place to set them at cold for a first start up? i have a RV grind cam that i don't know the specs to and also going to run a turbo. i do know its touchy my other 270 with the roots blower and blower cam. i got the lash a little to tight, it still had lash but wouldn't run. loosened them up and it runs like a freight train.