[rbohm]

ok, stock the 4bbl challenger V8(the a code engine) was an overrated 225 hp. it netted more like 180-190hp. the heads are worth about 50hp on a stock motor which means that at best you are getting 230hp net which is around that of a 87 mustang gt 5.0. with the right cam, you can be seeing arounf 350hp as the heads and cam working together can really wake an engine up. i have been doing this for a long time, including building race engines, and i have built engines on desktop dyno, and matched them to real world settups, and i can tell you that likely you used the wrong head parameters. and that will give you erronious hp and torque readings. i made that mistake myself at first.