toolmanmike said Did you see all the photos from my 273 heads that Radar's shop did. Woody (Keith) did the work. The valves are stock size and the ports aren't large but they seem to work. I didn't have them flowed and the numbers are small I bet. View attachment 1716017443 View attachment 1716017445 View attachment 1716017447 View attachment 1716017449 View attachment 1716017450 View attachment 1716017451 View attachment 1716017453 View attachment 1716017454 View attachment 1716017455 View attachment 1716017456 Click to expand...