Head-Quarters 99-06 (Except 06 Dyna)
Cam Event Open Close Lift TDC Duration Centerline
HQ-0033 Intake 19 47 .600 .172 246 104
Exhaust 52 24 .530 .191 256 104
HQ-0034 Intake 20 36 .500 .174 236 98
Exhaust 51 19 .500 .166 250 106
HQ-0036 Intake 20 54 .600 .182 254 107
Exhaust 53 22 .530 .181 256 105.5
HQ-0037 Intake 26 60 .650 .221 266 107
Exhaust 70 24 .575 .198 274 113
HQ-0038 Intake 23 63 .600 .199 266 110
Exhaust 52 24 .530 .186 256 104
Head-Quarters 07-up (and 06 Dyna)
Cam Event Open Close Lift TDC Duration Centerline
HQ-TC-500 Intake 20 36 .500 .174 236 98
Exhaust 51 19 .500 .166 250 106
HQ-TC-525 Intake 18 40 .525   238 101 discontinued
Exhaust 51 19 .510   250 106
HQ-TC-575 Intake 20 40 .575 .161 240 100
Exhaust 52 24 .530 .188 256 104
HQ-TC-600 Intake 19 47 .600 .172 246 104
Exhaust 52 24 .530 .191 256 104