The Opti-spark distributor is positioned on the front of the engine underneath the water pump, and works well in its designed environment--when it works. It isn't a matter of if your Opti-spark will ...

At GMHTP, we cater to all years of GM EFI muscle, and the LT1-powered GMs are no exception. Though today overshadowed by the much-adored LS1 and LS6, the LT1 can be made to run with many of the newer ...

Whether you service your own ignition or need more troubleshooting savvy for road rallies and cruising, this month's lesson focuses on spark and ignition system basics. Understanding ignition ...