how to get power from a 318

"That Sounds Kooool Speeddemon" Thats the Other thing what year did the 302 Seriel Head Come Out as out of my Sets ive only got 675s & 587,915s But i have No 302s are they from a Later 318 with swirl port Design??As Over Here We had the 318,340,360s But they Pretty much Finish up in 1981 & Just used up the Last core V8s that were Probadly manufactured Back in 1973?? :)