stock RPM shifts

[justin7t]

What do most GN's shift at ?? I have been shifting at 4500 but it seems I could go to 5000-5200 I do have at mild cam at .050 202-202 ? The poston catelog say's stock cam dies at 4000 RPM and my cam (GN07Tcam) pulls to 5600 !!! . I am to scared to go that high I dont want to break nothing again.

 

[cool 84]

I usually let mine shift itself at 4,900rpm and only wind it out for the hard races. I know there are guys that push 6,000+ rpm on the stock bottom end and they seem pretty reliable, but to me it's not worth it on my only car. I've gone to 5,500 plenty times through the traps and never had a bottom end problem and twice set it on the 6,200rpm revlimiter on accident with no problems. What valvesprings do you have?