Originally posted by gripen:Early Production model did just 388mph at 19685ft at JAAF test but that was without water injection and at lower rpm (2900 vs 3000).
Originally posted by Mitsu:Karnak,I know about that, and I know Major. Iwahashi recorded 392mph @ 6,120m (631km/h) in 4th (No.8404) Ki-84.