Thanks for the report. Congratulations.
Forgive my rant, below, on "steam vented head"
The term "steam vents", presumably referring to the
six additional coolant passages between the siamesed cylinders in 261 blocks/heads, is a misnomer introduced by
Jim Carter (most likely) and promulgated because it sounds neat?
If there is steam in the block or head, something is probably wrong with the engine's cooling system. All parts/aspects of a cooling system are designed to prevent boiling (over-hating): all parts of the design - not just the extra passages needed to properly cool a 261.
