Brainstorming ideas for coolant crossover on Air-Gap intakes

One thing to remember is even with the Magnum heads, you will have more heat to the plenum on an rpm intake just from the oil splashing on the bottom of the runners even without the crossover. Just not sure what non air gap intakes are available for Magnums.

If you can put a tube of some sort underneath and attach it somehow, then run a heater hose on it, it likely will help. I have had the same issues in late fall with the air gap on the 318 in my Dart. An electic fan with a temp switch helped it get up to temp sooner in the cold.