distributor gear?
 

Is there a way to tell an aluminum gear from a steel one. I need a steel gear since my 351 is a roller. I know aluminum is soft so I took a little screwdriver & scratched a small line on the distributor housing to see how soft it is since it's aluminum. Pretty easy to scratch. Then I tried to do the same on the gear. Impossible, so I'm pretty sure it's steel.

Re: distributor gear?
 

I don't believe aluminum is magnetic where steel is

Re: distributor gear?
 

They dont make an aluminum gear... cast iron or steel from the factory. Or bronze aftermarket.
What distibutor? Stock?

Re: distributor gear?
 

yeah, it's stock

Re: distributor gear?
 

Probably cast iron then. Unless the engine came with a roller cam.