422 dyno fail

That seems like it's down a cylinder, what do the plugs look like? Were there air/fuel ratios recorded?

I did a 406" B block with mildly rubbed on 452 heads that flowed [email protected], 8.2:1 compression, Erson 230 something hydraulic roller, with an out of the box Holley 750 vacuum secondary on a Performer(not rpm) intake and it made 435hp and 445ft-lbs. I would expect at least that level of performance from the 422in small block, expecting to push more like 500'ish numbers actually. S/F....Ken M