I am in the process of putting my new Trickflow heads together (ported by Lloyd) and I wanted to how to setup these springs for my CC306? I plan on trying 1.7RR's in the next couple weeks and then a custom cam in Jan.06 so I went ahead and got enough valvespring to handle the extra lift. Do you guys think a rev kit maybe needed to turn 6800+rpms? I used to turn 7k rpms with no problem with the 987's on my old heads w/o a rev kit. Thanks for the info Later Clint.

 

1.850"

Bret