
Originally Posted by
Overkill
Sounds like you have XFI lobes? If so you have 149/147 .200" lift I/E which is very good. IS3 is 138/144 with similar duration so you're far ahead.
With a 112 intake centreline you'd have +48 exhaust opening and -44 intake closing which are good numbers. I did an XFI cam with 224/236 duration, similar intake closing, had great top end, shook welds loose on the exhaust system but I'd reduce the exhaust duration doing it over again as the exhaust opening was very early and I lost some mid-range torque.