Dyno run/ missing out maybe? Low hp/tq

Hi guys I got the car a little over a week ago and don't know much about the tune or combo of the car I'm trying hard to find out more. Looking at the machine shop receipt for the head work it shows the heads are from 1973 and elsewhere it states a valve size of 1.74 not sure if that's exhaust or intake. The torque converter is from summit and the part #is APe 54092 which I'm having a hard time finding specs for. The Holley carb is HLY-0-805085A from summit. Camshaft kit from comp cams is crb 280h pp474 the jasper # is 133710-277923. I understand the first set of numbers is the stock#and the latter is production # The transmission is a 727 torque flight I'm not sure on the axle ratio yet and I have not checked my timing yet gonna set that early this week the dyno was 30 bucks for a pull and it was all donated to charity so I understand slightly me not getting much info beside actual power numbers hopefully this info helps you guys a bit more thanks for all of your help guys!! Means a lot. I take all criticism in a constructive way so no offense takin. Just learning as I go. Ps no idea on carb tuning. Thanks guys you are the greatest. I don't know how to post pictures off my phone or I would