I listened to that You Tube several times. Sounds like the motor was a little flat, maybe running a little lean? I know following Landspeed racing the big cubic inch motors need more fuel than the 1/4 mile requires.
It was a little flat. Jetting was spot on after reading the plugs. If it wasn't, it would melt running that long. I used to pull timing out in high gear with a timing computer while drag racing and would gain a little bit of mph. On that run in the video i had 6 degrees pulled out for the whole run. It didn't like it. It struggled climbing up through the gears a little. You have to realize the learning curve is steeper than you would expect running this kind of race. I will change something every run trying to find the sweet spot with the combination that I have. Being the first time up there with this car and in this type of race we obtained our goal of 175mph which we were limited to with out further safety equipment.
