Speedmaster Small block porting tips and results Part 1

DE9EB094-BABF-415D-9D85-1C68034CDF5A.jpeg 2E663C91-6DC3-4EF2-9F7A-618D5E492FBB.jpeg CB732E0F-1761-433A-8FB3-934CB36F9AD7.jpeg 0F6851C4-AA4A-4A47-B71B-776CB15BE12B.jpeg Combustion chamber, spark plug hole