any idea on what kind/size of cam?
 

So, I am a newbie on this site. I recently purchased a '77 SWB Chevy P/U with a SBC, true dual exhaust, factory cast iron manifolds.

The mufflers appear to be generic glasspacks.


I am trying to figure out if this is a "stock" cam or not. I swear it isn't. Maybe someone can help me with this.


thanks in advance