The period of highest production was 1940 (2710 units) and so this would reflect the bulk of I-16's on strength during the early GPW.
It seems that several types were in production across 1940 both with the older M-62 Shvetsov and the newer M-63
Type 18 (counted in the type 24 production) M-62, 4 x 7.6mm Shkas, 2 x drop tanks
Type 24 (circa 760 units) M-63, 4 x 7.6mm Shkas, 6 x RS 82, 1 x 100FAB, 2 x drop tanks
Type 27 (circa 277 units) M-62, 2 x 20mm ShVak, 2 x 7.6mm Shkas, 2 x drop tanks
Type 28 (counted in the Type 27 production) M-63, 2 x 20mm ShVak, 2 x 7.6mm Shkas, 2 x drop tanks
Type 29 (unknown production) M-63, 1 x 12mm BN, 2 x 7.6mm Shkas, 6 x RS 82, 2 x drop tanks
Speed at sea level was circa 256/260 mph
Climb to 5000m was 5.2 to 5.8 mins (depending on engine and load out)
Turning circle circa 17secs sustained.
Wing tanks extended endurance by 60 mins when flown under cruise settings.