May be normal
Check the timing just to make sure it's right if you are not sure but 24 in MAP at 2450 RPM is much lower than I see at that altitude which indicates that you are possibly not running with wide open throttle and leaned for best power. If this is true then the CHTs may be reflecting that in a normal manner. With WOT at 6,000 ft density altitude I typically see 24.5 " and that goes higher at lower altitudes. In the BCAF air race last weekend I flew from 2,200 to 2,500 ft MSL depending on the surface elevation in each leg and I was seeing MAPs in the 28" - 29" range. My CHTs were generally around 330.
Bob Axsom