440 what am I missing here?

I like it too. If it has a converter stall of 2000 rpm it is a the largest shelf cam that could be used without loosing too much low end power. If it has a 2400 rpm converter as was mentioned as a possibility, then it’s an even better match. The 112 LSA combined with 448 cubic inches is what allows 229 @ .050 duration to work with that low of a stall converter. I would prefer a 106 or 104 ICL, but Howards says it’s still okay with the TFS heads. With 2000 rpm stall it’s going to be a little soft on the bottom, but a 440 in a light vehicle it will recover quickly. If you look at what it’s working against right now, there’s no way it couldn’t help it out. Of course, if the OP wanted to run more converter, I wouldn’t tell him not to. But it would put everything where he could live with it for the time being before committing to upgrading the converter. A tight 9 or 9-1/2 inch converter afterwards would make at least that much more improvement again. But definitely going to have to lose the race single plane and the existing cam to get it to play pretty with the FI tech. Wont have to worry about headers either way, though.