440 what am I missing here?

Okay! Not perfect, but close enough to work very well with that Howards cam and the performer rpm. With the 440 and a significant boost in lower rpm torque you can expect it to stall a few hundred rpm higher than it’s rated stall speed. Keep us posted! Once you get the parts changed, the timing curve optimized, and the FI Tech tuned, I expect that you’ll be a whole lot happier with it. And if want to take it to the next level later on, then a custom converter would get it there. What size and type tire are you running on the rear right now?