Rebuilt 318 install problem

I have a few grounds from the engine to the battery and from the battery to the ignition and from the battery to the frame and radiator support. I did a lot of reading on here and did what most have suggested as far as grounding the car. I will check that and see but I don't know how that would not allow me to see the timing mark on the balancer.

Should be an engine to firewall(pass side back of head) Mine does anyway.