Why are 318's low HP and torque?

Does anyone know If I can go online and input my own specs from my build in order to figure out my HP and TQ without paying an arm and a leg to someone who owns a dyno? Not just stock ratings....


somebody might have " desktop dyno" or something similar, you can give em your specs, and they can look it up for you. just to give ya a little info, i read about a 318 build once on the net, they took a stock remanufactured long block, put on a factory 2bbl setup and with cheap 1in. 5/8 full length headers got about 180 horsepower. they ended up getting about 275 hp out of it with just carb, intake, cam, changes nuthing else. the cam that made the most power was the xe262 IIRC..