422 dyno fail

To answer a few questions that have been asked. Timing is set at 36 all in. The headers are Doug’s D453 1 5/8”. The carb is one that the shop has. I am taking a 850 Holley today to try it. I will also be buying an Air Gap intake.

Timing looks good. Those headers are small for a 422ci. It will probably like the 850. The air gap IMO is the best dual plane.