I am also building a 261.
It was rebuilt in the early 80's and came with an 848 head (highest compression).

To my surprise, the steam holes had NOT been drilled, although a 261 gasket was used and there are holes in the gasket.


1953 Chevrolet 1300 - Daily driver
Collecting Vintage Whizzer motorbikes
http://www.whizzerick.com