My valver which has a 2 litre bottom end on drives more like an 8v in my opinion. I will explain best i can. Bottom end i have soooooooooo much torque and power but i may as well not use the last 10k of revs as it has no power at all there. I thought that was were valvers came into a league of their own? The only reason i can see for this is that im running the very small bore intake manifold. Ive got a larger polished one sitting waiting to be fitted. What do you guys think? Might it just be a combo of the 2 litre and small intake manifold? Other engine mods include a 4 branch stainless manifold and full ss exhaust. K&N pannel filter