Inliners International Forums General Discussion Engines Need to know exhaust pipe diameter for GMC 302.

51 GMC 1-ton

I replaced my 228 six with a 302 six. The 302 has a 2bbl. The 228 had a single bbl. The throat on the 302 carb measures 2 1/8" ID. The exhaust pipe that came with the 228 is 2" OD. I assume this is restricting my exhaust. What would be the proper exhaust pipe size?