Thanks!

 

This is what it looked like before putting it in. Now the muffler is of course different.

 

No cats.

 

Sweet, nothing better than coming back from a track session with new bests. You are getting very close to a perfect pass. When calculated hp from the et and mph match each other from a maxed out drivetrain and clean run.

You are approaching 400 hp in performance. Depending on build, is that where it should be ? You are showing 385 net hp at the crank with your best pass. I'm figuring the build may be around 425 hp gross ? Seeing that open headers is a key to both your best pass and a gross crank dyno. Only difference for you is accessories.

101.52 is good for a 13.05 so obviously you are darn close. And still worth it as is for you to keep trying. I need a significant change on my ride to make going back really worthwhile. Especially when the track and weather was as good as it gets on my best.

Weather also played a part in your gains. The DA was phenomenal towards the end of the day for your last session. If you can provide time stamps for best runs from both recent sessions I can really crunch numbers. That's assuming time stamps are accurate. Sometimes they are not. One of the reasons I took detailed notes on my passes.

 

I don't really have a reference, but it seems reasonable, I think.

It's a 9.5:1 455 with a Crower 284HDP grind, big valve K heads that I ported and cut to 78cc, long tubes, a Torker intake and a 780 Holley