What springs should i use with 1.6rr and CC305?

 

Many choices:
Comp recommends 986-16
crane 10308, comp behives and cms will work.

 

can those springs be used with only 1.6 rockers untill i put the cam in or will they be too strong

 

Some stick with the stock springs when going to 1.6, but that's on the edge. Yes you can use any of these springs with a stock cam, seat pressures are modarate. The best springs to go with are the behives, they'll give you spces to grow on cam choies and offer the best stability at high revs due to the reduced mass.