Mike Graham/Gary Summers

[Rich Wallin]

Originally Posted by Mike Graham

What I was saying was that both cars that I am associated with have the DA head. That is the head that is listed in the blueprint spec,so by definition , it is the correct head. The takeaway should be to check the blueprint spec before you build a new combination. That is what you will be held to in teardown.

My take on this the part numbers supplied to nhra need to be updated .... in my experience as an engine design engineer the suffix change usually is production tool related not base design / performance driven