I Want To Beef Up My 340 Motor (help Please)

How old are you Joe? Brothers age? Just curious.
Some of the things you'll need to decided is if you want to install headers, aluminum intake, do a carb change, spend money on porting heads etc...
Also consider how much HP you want or how fast in the 1/4 you want to go or just a simple kick in the pants feel description for a nice power increase.