Motor help
 

I have a 1991 chevy 4x4. It has a 3 inch body lift and 315 buckshots. Im kind of in a bind in what to do with my 350. Ive taken it out because the crankshaft is making some noise and I was interested in trying to beef it up a little if I could. I would like to get some advice on what to do to a throttle body 350. Please try and help...