Originally Posted by cboggs
I agree with Rick, .. those numbers are weak for a Dart 18* head,
with a 2,18" valve should flow around 370-380, .. also
270cc might be on the small side if you look at the proper
cross sectional areas for a 2.18" valve and your size engine.
Curtis
I just noticed it's a 2.15" valve, the heads where built with too
small a valve for the application, ..
C