I have a 62 235 engine. I put the clifford intake and headers on with a holley 390. I am going to replace the jets and discharge nozzles on the carb as recommended by clifford. So I'm going to run the exhaust. I originally thought that the more flow the better? So I got the collectors for the headers at 2 1/2". Then a friend told me that too much flow can rob you in torque. I never heard that before. But should I reduce the duel exhaust to 2"? I plan on putting in a X pipe also.
