I am pulling both heads to get the top of the line dual coil valvesprings that will work for my application. I have the xe 230/236 on a 112 LSA w/ lift #'s of .594 and .585 w/ 1.6s. I was wondering which dual coil valvesprings I should go with since my last pair of valvesprings failed not once but TWICE, and I am tired of taking the heads off... to fix bent valves =/

do NOT get ex components 612 valvesprings even if you like me are told that they are good to .620" lift. THEY ARE NOT. END OF STORY.

 

Call Comp Cams tech number. I believe the cam card recommends what springs also.

 

I believe the CM612s are advertised to be good to .600. At least, that is what I remember. That would be too close for your lift.

 

I was told .620" before I bought them, after I broke the first one I was told .600".
I am definitly going dual coil valvesprings now, no more screwin around

 

Get your next set of valves .100 longer stems and get springs to put you 135-140Lbs on the seat and 375-400Lbs on the nose and forget about any more spring problems.This would make it 1.850 installed height.