Front of engine showing crankshaft pulley, idler, alternator and…

Timing Pointer & Misfire Sensor used only on '96 OBD-II smallblock engines. The lower L pulley is a factory idler where the unneeded air pump used to go. The '96 cats are Oxygen-storing, so they don't need 2ndry air.

Owner caption July 2003 · Photo 35 of 76