I have the heads off my TA due to a blown head gasket with a 200+shot of N20.
My setup is CC306 with Harland Sharp 7/16 NSA 1.65RR, ARP poly locks, Gm guideplates, comp R's, trick flow 1 piece hardened PRs, Crane 10301 spring kit which I replaced the supplied spring shims with comp 4117 locators, which I notched to fit in the heads stock spring seat.
As long as the motor is apart I was considering changing the cam to the GM847 but ground on a 110 LSA and changing my rockers to some CC Pro Mags 1.6 ratio.

Need some help on selecting some valvesprings that will get the job done whether I decided to just buy some scorpion 1.65RR and slap this TA back together with the cc306 and continue to spin to 7000rpms. Or if I decide to go the GM847 (110 LSA grind) and 1.6 pro mag route and still spin to 7000rpms.
thanxs in advanx for any help

 

Comp cams Behives 918.

 

When I did a search that is what I came up with too since I wouldn't have to have the heads machined to accept them.

Also I forgot to mention this before but I don't believe my valves are stock length, they are manley race flo valves 2.00I 1.55E

With the Beehive 918, could my setup handle 1.7 rockers with either cam(cc306 or gm847), I ask because I don't know how much lift the beehives can handle and if they can hold that lift at 7000rpms.

 

Coil bend for these springs is 1.085, so if your installed hight is 1.75, then you can go upto 0.615" lift with safety margine of 0.05". The gm847 has a lift of 0.632" with 1.7 rockers so it wont work safely with this combo, but will be fine you increased the installed height to 1.8.
http://www.powerandperformancenews.c...&Store_Code=CC

 

So the beehive 918's with a 1.75 installed spring height could handle my CC306 with 1.7 Pro Magnums, at least liftwise they could.