What I have seen and it is impressive 401 RWHP. I'm a GT owner but I have seen these V6's in action and I was impressed to say the least. I would say average 390+.
So far I've seen 409 and 460 RWHP on stock 3.7L internals holding together. I am aware of one at 550 RWHP (that was a turbo project) that eventually popped (after a few thousand miles I think), but nothing between 460-550 on factory inards. I'm curious as to wheter any are out there?
Private "one-off" turbo folks can chime in, too. I identified the Procharger only because it is more easily attainable and much easier to tune. I'm not really as concerned about the Procharger as I am FI in general.
I've seen the safe thresholds and I've read plenty of threads on beefing the internals and such. No interest in addressing that.
I'm just curious about the numbers. Does anyone know if the 460-550 RWHP FI'd factory internal 3.7's exist out there?