Quote Originally Posted by peteyx
I need to decide what size exhaust system for my Ranchero. It has a 429, Edelbrock 750CFM carb and manifold, CompCams X4270H cam and HEI ignition. I am shopping for headers although those from Crites seem good. I want the exhaust to include an X- or H-pipe. I can choose 2-1/2" or 3" pipes. What is the best choice?


I would run a 2 1/2 Mandrel bent system if you have the funds. The 2 1/2 pipe can really bunch up going over the axle restricting flow. Just had one done with Delta 50 Flow masters and a cross over. Sounds Badazz. An X pipe works better at high RPM than an H but causes more clearance issues. For your setup I would use the H it makes maintenance easy. Chris