Intake Manifold Heat

The only time I have had throttle response problems with the 465cfm Holley I am using were when the automatic choke came on(it's gone now) and when the power valve blew out.
When I thought the headers were causing excessive heat under the hood the problem was actually a bad radiator.
I am not saying you are wrong just stating my own personal experiences :thumbup:
Keep on slanting dude