GT6 Mk III Triumph GT6

triumph gt6 mk iii

the final major facelift gt6 came in 1970 in form of mk iii. time entire bodyshell revised match changes made spitfire mk iv: modifications included cut-off rear end, recessed door handles , smoother front end. detail changes made mechanics, in 1973 – close end of car s production life – rear suspension changed again, time cheaper (but still effective) swing-spring layout fitted spitfire mk iv. modification of swing axle rear suspension used on herald-derived models, transverse leaf spring mounted on pivot, eliminating roll stiffness @ rear, , reducing jacking effect under cornering loads. compensate loss of roll stiffness, larger front anti-roll bar fitted. brake servo added in 1973, , seats changed vinyl cloth. there still comprehensive options list, knock-on wire wheels no longer available. unladen weight increased 2,030 lb (920 kg).

engine power , torque mk iii similar mk ii, better aerodynamics led new top speed of 112 mph (180 km/h) , 0–60 mph time of 10.1 seconds. performance comfortably ahead of mgb gt, reached 105 mph (169 km/h) , 60 mph in approximately 13 seconds. fuel economy improved 28 mpg‑imp (10 l/100 km; 23 mpg‑us). last usa models relatively performed poorly owing compression ratios being reduced allow use of lower octane unleaded gasoline.

the mk iii never sold in numbers hoped triumph, , comprehensively beaten in marketplace mgb. triumph refused release official convertible version of gt6 and, after poor sales, dropped triumph range @ end of 1973, although few cars sold following year.