@toolmanmike I got spitfire headers, but may end up investing in the hedman headers, My "920" heads have an enlarged intake valve and some minor port work. When I pull the engine back apart, I am gonna do some more work to the heads. Should I go back with my original single plane 4 barrel iron intake, or keep the LD4B intake. I normally play with big blocks and Hemis, and I appreciate all of your guys information on making this little engine perform.
