273 Cracked Intake manifold with a belly of "Charcoal"!

Mr.Extrodinaire said
The 273 came with 2 barrel carbs. Later they came with a 4 barrel on a Commando Intake! However, the 4 barrel Commando came after the heads & intake marriage changed the angle for that union. So the 4 barrel Commando Intake I have will go onto the 318 I just got & the 273 will get the repaired original 2 Barrel Intake after I get it brazed!
I am actually an Army Trained Metal Worker, although I do not currently have access to the equipment (oxy-acetaline) tanks & torch here in Tucson.

Well yes but no. The 64's had 2 barrel only. The 65's came with 2 and 4 barrel intakes that had the same 5/16" bolts at the odd angle. In 1966 the bolts changed to 3/8" and the normal bolt angle that all the small blocks had up until the Magnum engines came out in the early 90's. The bolt holes in the heads were what changed in 1966 so the earlier heads and intakes must match or modifications made.