Thanks to all that commented. I'm excited to test these ideas at the track. As far as testing to see what's too tight...how will I know? Will the performance drop? Will the valve train fail? I'm not running a heads up class. I don't need every nano-second of et for any reason other than to say it went faster. I'm guessing that most of the issues I've had with adjustable rockers has come from adjusting the lash cold and to the manufacturer's specs...thus ending up with too much play and beating the valve train up.
Can you enlighten me on why a manufacturer would suggest .026 lash when others use .012 or so? I'm not an engine builder, but I've set the lash on all my engines. My thought process is that the lash is the clearance between dead-tight and acceptable clearance. Tommy
There are 2 style cams.. one is referred to as a
tight lash cam.. its the way they make the ramps
but I havent had any issues with the tighter lash
on the old style big lash cams.. the one in my 416
is a old roundy round roller with .028/.032 lash
(thats what it calls for on the cam card).. for one
thing it was super noisy with all that lash and second
my engine likes the larger lift with the tighter lash
