The J-8E became an improved J-8I model while the JZ-8 (or J-8R) was billed as a dedicated reconnaissance platform. The J-8ACT was used as a fly-by-wire developmental model designation.
J-8II ("Finback-B") featured a nose-mounted radar assembly, deleting the MiG-21-style nose-mounted intake in favor of lateral-mounted ones (ala the MiG-23 "Flogger"). The ventral side fitted a folding fin and the canopy was manufactured as a two-piece system. The J-8 IIB was naturally billed as an improved J-8II, also taking on the NATO codename of "Finback-B", and fitting twin WP-13AII turbojet engines and a 23mm Type 23-III series cannon. Again, fly-by-wire developmental models were represented by the J-8II-BW2/J-8IIACT. The J-8 IID sported an in-flight refueling probe.
The "II-series" was well represented on the world market by the inclusion of the export-friendly J-8IIM / F-8IIM based on the J-8B production model. These versions fitted WP13B turbojet engines capable of 15,432lbs of thrust. Other refinements included a Soviet Phazotron Zhuk-8 II pulse Doppler radar system, an updated cockpit and integrated GPS navigation.
"Peace Pearl" J-8II was a proposed joint American-Chinese effort to mate the J-8 II production model with US avionics, APG-66 type radar system and ejection seat. The events at Tiananmen Square nixed this project foray.
Other improved Finbacks appeared in the mold of the J-8IIH, J-8IIF and J-8IIM models, each differing slightly. The J-8III fitted WP-14 engines with improved radar capability, a digital fire-control solution and a revised cockpit (with multi-function displays) and canopy. The F-8 was yet-another series of technology demonstrators, with this model utilizing an integrated digital fly-by-wire control system.
The J-8 series have served under the air force and naval branches of China and it will continue to appear in active service until the new generation of indigenous Chinese multi-role aircraft come online in quantity. At least 325 Finbacks were known to have been produced.
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