LS1 Coil packs in Help Me !! Posted January 10 · Report reply 6 minutes ago, zKars said: You can get pretty basic triggering with an old dizzy, a spot of welding, and a hall sensor. I was thinking the same thing... For wasted spark, you don't need any cam position info at all. And for sequential firing, you don't really need a "good" cam sensor. You get the real "timing" info from the crank wheel. The only thing you are doing with the distributor mounted sensor (cam sensor) for is go/no-go to differentiate whether you're on TDC compression or TDC exhaust. (As an academic aside) I even wonder if you have an O2 sensor, maybe you could even tell the difference between compression and exhaust strokes by analyzing the exhaust gas composition. When you first turn the key and crank the car, it's 50/50 right?