Engine build 10/19/2006

Time to get the taps out. You'll need taps for 1/4 fine, 5/16 fine, 3/8 course, 7/16 fine, 1/4 pipe and 5/8 16.
I like to chase all threaded holes and check condition of the threads.

I found that cutting a 1/4 pipe tap down in length works better after starting the threads with a standard length one.

The shoulder in the oil gallery holes bind the long tap.

.I deburr all holes in the block with a multi flute counter
sink by hand. A tap hand handle works fine for this