Quote:

Eddy heads are good to .600 lift
SRP pistons are what I use.



What you should say is the heads are setup with retainer to guide clearance for a .600 lift cam , if one were going to use the heads on a motor with a soild roller with under .600 lift those springs would still be useless .

Ignore the springs supplied with the heads unless you have the SPECS for them and then compare the specs to the specs the CAM MAKER calls for , if they work , great , if not buy the correct springs .