I originally bought some comp 986's, but they won't fit my stock heads without some grinding, which I'd rather not have done. What springs should I use that will fit my stock heads and be able to work with my cam?

 

I'm using the Crane 10308 kit..
But you can use Comp Beehives as well. Do a search for both and you'll come up with alot..

 

918 beehives, no machining needed...

 

I forget, what's the lift of the 306 with 1.6 rockers? RyanD, if you can use the beehives with that cam, which I believe you can, do it. I had some 987s with my small cam and they weren't enough spring for the job. The 918s solved the valve float problem. Gained another 400 rpm.

 

I'm using 1.5 crane gold rockers, with this lift do you think 918's would work? btw man, thanks for the help.

 

check my sig, everything works flawlessly up to 6900, btw the 918's are good to .600 lift and the cc306 is like .544 intake, .576 exhaust with 1.6 rockers.

 

edit: noticed you have an m6. nevermind, thanks for the help