OEM Inlet/Outlet Diameter of Exhaust?

[airbur]

What is the stock inlet/outlet diameter of the 1970 302 V8 exhaust tube? Thanks!

 

[matts70]

I know the outside diameter of the exhaust pipe connected to the exhaust manifold is 1.9" or 1.8" (I'd have to measure again). I have no idea what it was entering/exiting the muffler.

What's your plan? You should be able to buy or check the specs on stock replacement muffler or exhaust pipes to find out. That is, if I'm interpreting your question correctly even.