Suggestions on performance upgrades for 225

I'd say increase compression and head flow as the best gains. A feller name Joshua Skinner over on the slantsix(.org) forum has went 17 something in the 1/4 with a stock cam. Cam (small, like [email protected] or smaller if it were me), carb (again, stay small. Smallest autolite 2100 for me), and exhaust upgrades will all help as well (for exhaust, go 2.25 single with muffler of choice)