Is anyone running this set up with the 306. I still have the stock stamped steel ones with my cc306. Was wondering if piston to valve clearance would be a problem. I have a stock bottom end and stock heads. thanx for any input!!

 

ne 1 runnning 1.6 rockers with the 306 and stock bottom end

 

There are plenty of guys running 1.6 RRs and a CC306 with stock bottom end. You'll be fine as long as your valvesprings can handle it.