Valve Spring Help!!!

[mean_green_98]

im workin on my 2.3 stroker/gt35r build right now. im lookin to make 650hp. and its time to make a a decision on springs. first i was thinkin about the manley springs/ titanim retainer combo, from sbr. they said that they are alot stiffer. i thought that was good. I have a set of the stage 4 comp cams, cams (lots of lift.)
so heres my thereoy's, tell me wich one is right...
i could go with that manly set, even tough its a single spring, im only gonna be reving to about 7k, despite the huge cams. (dont wanna rev it to high, its a stroker)

or go with the duel springs not for the fact that i wont be reving that high, but because it will be reving higher, faster.

Im i on the right track here? just let me know what i need, i would like to have everything i need by the end of next week. thanks

 

[blue1]

There are a lot more specials on the crower and tit' retainers, the single spring will be sufficeint for the RPM's you are looking at, What boost are you planning on? that does play a part into what seat pressure will suit your needs.

 

[mean_green_98]

well....about 35+ psi. again, its a 2.3 stroker, with a gt35 turbo. lookin to make about 650hp