im in the process of building a 331 and i really dont have a clue as to which pistons i should get. some people have told me 347 pistons and some people have told me to use just regular 302 pistons. please shed some light on this subject and suggest a good forged piston to go with. thanks
Heres a list of 327, 331 and 333 forged pistons from probe. If you dont already have the rotataing assembly, i'd do a 347 as your easily giving up 15+hp in cubic inches alone.