Question of curiosity. So Tony on Uncle Tony's Garage, made a video about a year back on the virtues of the exhaust ports on the small block Chryslers. Basically stating that because of the angle it is a very straight shot out the head which does make sense that, that is a better design. He used his finger and a torch for demonstration purposes. I also watched an awesome video on my vintage iron about camshaft selection, he does an excellent job at explaining percentage of flow, how intake and exhaust work together, (if your intake is flowing 197 @ 500 and exhaust is flowing 128 so divide 197 into 128 you get 64%). A basic idea if you are pulling in 197 cfm but only dumping 128 64% of flow not so good. (these are just generic numbers not tied to any head in particular). So getting back to UTG and the small block mopar head, 360/340 heads in particular agood exhaust would be very beneficial? So today I was researching different heads and I come across this website "darkside.ca" where they are briefly explaining different heads, both aftermarket and stock type heads. In the stock 340/360 j head type they say. "The exhaust port is probably the Iron head greatest weakness. You can make the intake port flow ungodly #'s if you want, but if you can't expel all the burnt Hydrocarbons, the guy in the other lane is goanna WIN. This is why guys resort to WELDING up the exhaust on factory iron heads for better exhaust flow". So who is correct Uncle Tony or this darkside.ca website? Or is the truth somewhere in the middle? Also what the heck is, "WELDING" up the exhaust? Here are some links to UTG and my vintage iron. Honestly M Vintage Iron I think is a great channel, IMO.