what is the usual practice in jet changing when installing open "strip" exhaust for the weekend racing, up or down sizing?carb is carter AFB, ford 302.running "glasspacks" on street now..
Usually, but not always, the open exhaust will lean the A/F ratio so you need to jet up. The only way to know for sure is with a wideband A/F ratio gauge or read the plugs right after a full throttle run.
