DYNO numbers for the 408SBC

[68 C-10 KID]

Well the numbers were disappointing. I'm not sure what to think about this. I came into this thinking I was going to make over 600hp because of the dyno results from the last motor.
Either I Really messed up on the cam combo or the previous guys dyno was way off and old junk.

The new motor went from a .030 bore to a .040, titanium retainers, rebuilt heads, bigger cam, fully ported intake to match cylinders heads and 1 7/8" to 2" headers.
So take a look and tell me what you think. The pulls on the graph are the single quad and the second is the dual quad. I have more info sheets if ya want to see them let me know. We did a total 10 pulls.