440 total timing

I will look into it. I am running 10.5 to 1 comp, fluid damper harmonic balancer, edelbrock alum heads, M1 intake, Holley 750hp carb, Mopar 286 deg cam with 557 lift, comp roller rockers, Mopar electronic distributor. I am using an adjustable timing light, and when I dial the timing into it, it brings it right back to zero on the timing tab. I am overlooking something, because this doesn't make sense. It should be 36-38 degrees total 10-12 initial. I'm gonna go nuts.