[Ron Earp]

Do what Chuck says, get some new parts. Even with a 302"displacement you could get 400hp/360 ft-lbs with bolt on heads, cam, intake, and carbs. Some AFR heads milled for good compression, proper pistons (might can skip this step depending on what you have), bigger bump stick, single plane intake, a nice 4bbl, and most importantly, some tuning and you'd be there. Or do it with Webers, either way.

If you've not spent some time on the dyno with your engine the way it is you might be leaving a lot of power on the table as it sits. Might want to look at that before doing anything at all.