I called again and he said you only pick up 25hp with a Summit cam (forgot what cam, step above stock).
Apparently (according to Harris) the stock cam duration at .050 is 165 Exhaust and 175 Intake. But I'll be darned if I can find that duration anywhere for sale, Jegs or Summit...
Anyways, I have to track down a stock cam. Not going to take the chip route...
This one comes up on Summit, the only stock one I can find on there.
https://www.summitracing.com/parts/m.../v30/year/1988
Called Comp Cams too. The smallest duration they have is 206/212 and according to the tech guy that's about equivalent to an RV cam, unfortunately...