Finally, got my 5.9 Dart to the track. It went well, then it went to hell.

I can not say it enough times..... pushrod length needs to be checked accurately and measured on EVERY engine we build and after you get the correct length pushrods you have to check all clearances around them (like contact with the head or head gasket). I don't care what ANY manufacturer claims YOU need for YOUR motor. We are not building production engines, we are building performance engines. Production engines have specs on each and every part that fall within a tolerance that are designed to work together. Like it or not guys, when we are building anything from mild to wild, it's a custom engine. This is just one of many parameters to check and it's just as important as your bottom end bearing clearances!