This may sound like a dumb ? but the mechanic that is building my engine told me that the stock timing cover was plastic but I thought it was metal, am I right or is he? Idk if hes just trying to get some extra money off of me.

 

They are aluminum.

 

Never heard of a plastic LT1 timing cover.

 

Your mechanic is an idiot. It is impossible to mistake silver and possibly corroded aluminum for plastic

 

Never heard of a plastic cover for any SBC engine. That guy would not be building my engine.

 

The 96+ Vortecs in trucks and vans are plastic or some type of composite.

But yeah, screw that guy. Get your engine the hell out of there.