Started on proto-typing a cam sensor for the engine. I cut down the top of the distributor shaft and using some of the plexi-glass and I rough cut a cap on top of it.

How it looks. I could probably paint the cap black or something and put a Pontiac arrowhead logo on it.

I gutted the mechanical advance stuff, and with the height of the walls I think I can get a relatively cheap and modern cam sensor mounted on the side of the distributor and on the advance plate I can weld on a metal tab for the sensor to pick up.

A sensor like one of these:

Might even look at speed sensors.

Rebuilding an OHC Pontiac 250 with EFI and a Turbo