Have an intake from an 83 3.8 but it has an e2 casting. The tubes in the manifold are actually heat riser tubes carrying exhaust gases that warm the carb and air flow/ The egr is in the back of the manifold coming in under the carb. You can't do this, but if the tubes are removed and the holes plugged the 3.8 will come to life. Also putting in sbc 305 intakes and exhausts will let you set the valve seat contact and maximize valve life and air flow. Use stock valve springs, retainers off ford 302 valve springs and chevy keepers. Valve spring height will be in specs. A little stemming of the valves will guarantee the lifters do not bottom out. Chevy valves are a hair longer.
