Dyno a 7.5:1 400? Sure, why not?

I'm running a 400 in my duster. Honed, stock pistons, steel crank, same summit cam, iron adjustable rockers, wind age tray and baffled pan, 906 heads with a valve job and decked just to clean up. Steel shim head gasket, Performer intake, 750vs, and headers. Stick with 3.73s. It's an ok combo. I took it to the track but it was kind of embarrassing. With some wheel spin went 15.1 @ 99mph. I put on some drag radials went back and had some issues with clutch pedal setup. I never got a good run out of it and haven't had the interest in going back, was kind of a buzzkill for me. This was something I put together with junk I had, just to set the car up. I wasn't expecting to go 12s with what I have, but I thought mid 13s would be achievable. I put almost 10,000 trouble free miles on it so far, so it's serving it's purpose.