Matt331

My cam swap dod delete is complete. On start up is sounds nice and quiet. Ls7 lifters eps cam ,7.4 pushrods, pac springs. After initial drive I thought there was a exhaust leak on drivers side. Kind of flutter of ticks.1500-2000 rpm. Is not exhaust, and seems to be coming from drivers side only.
I have rechecked pr lenght with or checker and came up with .85 preload, tried other method and got 1 3/4 turn to 22ft pds from zero lash.
Any ideas? Thx

George C....

ls7 lifters preload is .075

having to much preload will cause you issues

Matt331

I would try 7.375 pr if that would bring it down to .050-.060 preload and solve problem but I not sure that would cure it