Whats a reluctor??

91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
Like Speartech mentioned above it's the trigger wheel pressed on to the cranshaft itself. The crankshaft position sensor or CKP creates a magneto based field when supplied with a 12 volt source, the reluctor ring breaks that field so the sensor can physically determine the position of the crankshaft.
24X is used for the LS1/LS6 or Gen III PCM systems. 58X is for the LS2 or Gen IV systems which is required for the Gen IV PCM's.






