CC306 cam and CC986 springs
03-10-2007, 07:48 PM
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CC306 cam and CC986 springs I just got a CC306 cam and CC986 springs with the 747 retainers but now I wonder if I should get a different spring. That is what was recommended but I didn't realize that spring is only good for .560 lift. I wanted to run 1.6RR. So will that spring be ok with 1.5RR or is it taking a chance on valve float?
.510int .540ex
.510int .540ex
03-10-2007, 09:41 PM
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I am running the CC306 with 1.6 rockers and 986 springs. I have ran this combo for years with no problems. I make peak HP at 6200rpm with unported factory heads.
03-11-2007, 07:50 AM
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Originally Posted by azvforce
I am running the CC306 with 1.6 rockers and 986 springs. I have ran this combo for years with no problems. I make peak HP at 6200rpm with unported factory heads.
03-12-2007, 02:23 PM
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Originally Posted by jakesz28
Do you have the beehive 986 or the double valve spring (Jegs 249-986-16)? I would hate to put this together and have a problem.
03-13-2007, 08:49 PM
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Originally Posted by azvforce
I have the double springs.
Some people say yes others say 918's.
I already have the 986,s retainers, locks, locaters.
The 987 would be a cheap upgrade but then spring pressure is higher.
