so im building a new engine this winter and im wondering what kind of power to expect in the spring. Its gunna be a 302 either stock ported heads or some 69 windsor heads. a performer intake, 600 CFM holly vacuum secondary carb, as well as a comp cams nostalgia grind 271 Hi Po, with 266/273 int/exh duration, as well as 480/475 int/exh lift. Anyone know what kind of power i can expect from this combo, assuming im using the stock heads with a basic pot job and 9-9.3:1 compression. also any advice or ideas appreciated

 

Look into the weiand intake. Consider aluminum heads while you have it torn down.