That head only needs 30, maybe 32 total and it doesn’t need anywhere near that at peak torque. Probably 24 at peak torque. Maybe a skosh less.
Unless you have compression less than 9:1 and a huge cam that curve is killing power.
Peak torque is about 1500 RPM less than peak power. So if you are making max power at 6,000 that means peak torque should be no higher than 4500 and it probably first peaks another 500 RPM lower than that.
You need to slow the curve down and get the timing in line with what the engine wants.