My painter/partner was running a 383 stroker (350 block, stoker crank) in his 73Z.
Similar setup, but your's looks to be more mild than his. It was running a comp XE274 (~.490 lift, 230/236 duration @ .050, LS 110). Edelbrock Air Gap, 750 Demon, ported Dart heads, headers. Scat "cast steel forged" crank, whatever thats supposed to mean (and had to be drilled like crazy in order for it to balance). Im guessing cast, but havent gotten around to checking. Eagle h-beam rods.
Chassis dyno'd at 305 hp, and I think around 330 tq. Was running very rich, so I think theres was more left in it. With leaner jets (no dyno), it ran 13.1 in the 1/4.
In case youre wondering why I used the term "was"
Found in the oil pan:
Crank came apart in 4 places, at around 12-1500rpm. May be difficult to see from the pic, but each part of the back half of the crank came apart:
Im not saying 383 strokers or Scat cranks are bad, but we've obviously had our issues.