Fuel-Injected 1974 Triumph TR6

Description

Produced by Triumph Motor Company, the TR6 was powered by a 2.5-liter inline-six engine and featured a robust, classic design with a long hood and short rear deck. U.S. models used twin Zenith-Stromberg carburetors, while European versions retained fuel injection and higher output. 

In 1974, Triumph introduced mid-year updates — commonly referred to as the “1974.5” model — which included larger rubber bumper overriders, turn signals integrated into the bumper, and an air dam on the front underside. These changes marked the beginning of the TR6’s transition toward a more federally compliant design, while still retaining its sporty character. This TR6’s VIN number indicates that it was part of that 1974.5 version, but the car retains only the integrated turn signals and air dam. 

This immaculate fuel-injected 1974 Triumph TR6 has had so many upgrades that they’re almost too numerous to mention — except that we included them below. The roadster has won numerous first-in-class show awards and has been featured in a European magazine. Although it has been 10 years since the TR6 was restored, few British roadsters can beat the showroom quality of this one. 

Highlights 

• Late-production (often referred to as 1974.5) Triumph TR6 

• Powered by 2.5-liter, fuel-injected inline-six engine 

• Four-speed manual gearbox with optional Laycock de Normanville electric overdrive  

• Frame-off restoration in 2015 

• The chassis number (CF27581UO) decodes as: 

  • CF – U.S.-spec carbureted TR6 

  • 27581 – Sequential production number indicating August 1974 build 

  • U – U.S. market 

  • O – Overdrive 

Features

• Body, frame, and paint upgrades include: 

  • Body and frame were stripped down to the bare metal and primed 

  • Custom paint job: PPG Delstar Acrylic Enamel base coat in French Blue, finished with Hi Line clear (Glamor Coat) 

  • Fender wells and trunk coated with epoxy undercoat, then painted to match body color 

  • Fiberglass inner fender well covers to prevent road debris from getting into quarter panel cavity 

  • Sound deadening material added to cabin and trunk 

  • Custom mud guards on front and rear fenders 

  • New mini turbo mirrors 

  • New black convertible top 

  • Front and rear bumpers re-chromed 

  • License plate mount with British and American flag badges 

  • Car was polished and ceramic coated 

• Engine/mechanical upgrades include: 

  • Complete engine rebuild (7,349 miles) includes stainless steel sleeves and shaved head for more compression 

  • Fuel injection with Bosch injectors  

  • Custom spin-on oil filter 

  • Stainless shroud with cold air intake and dual K&N filters 

  • MicroSquirt ECU 

  • MSD electronic ignition 

  • Stainless steel coolant lines  

  • Aluminum radiator with electronic fan 

  • Custom crankcase ventilation oil separator by Richard Good 

  • Custom aluminum battery retainer bar engraved with Triumph 

  • Custom hood foam with Triumph logo 

  • LED hood light with micro switch on driver side engine bay 

  • All new wiring harness with modern blade fuses (replaced faulty Lucas harness) 

  • Performance header with Jet Hot ceramic coating to mitigate engine heat 

  • Dual Free Flow Exhaust system for deep mellow exhaust note characteristic 

  • New Water pump and all hoses replaced with 180-degree thermostat 

  • New pulley, damper, and belt 

  • Billet aluminum radiator brackets  

  • Stainless steel shroud by Richard Good 

  • Ram air induction by Richard Good 

  • Adjustable trailing arm bracket kit by Richard Good 

  • Nylatron Suspension Bushings 

  • Upgraded axle hub for reduced power loss and increased horsepower by Richard Good 

  • Front Brake upgrade to Wilwood (Red caliper) by Richard Good 

  • Rear Brake upgrade to Wilwood (Red caliper) by Richard Good 

  • Dual Wilwood master cylinder by Richard Good with billet aluminum bracket 

  • Adjustable brake tensioner installed on dash under steering wheel. This is to adjust brake response from front to back 

  • New clutch Slave cylinder 

  • New brake lines 

  • Aluminum steering rack mounts by Richard Good 

  • Aluminum Valve cover with custom spindles 

  • Magnecor high-performance spark plug wires 

  • Pertronix high-performance coil  

  • Pertronix Flame Thrower Electronic distributor 

  • New battery cables with quick disconnect ground cable 

  • New Minilite wheels with Triumph logo and Triumph logo valve stems 

  • New Yokohama Avid Ascend LX 205/70R15 redline tires  

• Interior upgrades include: 

  • Custom upholstered interior in black with red stitching 

  • Miata seat conversion includes black custom upholstery with Triumph logo embroidered in back of headrest and TR6 embossed on front of headrest 

  • Heated seats 

  • Seat belts with the Triumph logo on the buckle 

  • Roll bar 

  • Custom center arm rest with storage   

  • Woodgrain dashboard 

  • SportComp gauges: 140 mph speedometer and 10,000 rpm tachometer 

  • New carpet 

  • RetroSound stereo with Bluetooth and handsfree calling, subwoofer, amp (located in trunk), and four Kicker speakers 

  • Chrome door seal plates with Triumph logo 

  • MaxOut Fire extinguisher mounted in cabin on passenger side 

 Known Imperfections 

• This 1974 Triumph TR6 is presented in fully restored condition with no known obvious imperfections at the time of cataloging 

Included 

• Spare tire 

• CoverKing car cover 

• Convertible boot cover 

• Triumph carpeted floor mats 

• Triumph cell phone holder 

Ownership History 

The North Carolina seller of this 1974 Triumph TR6 has owned it since February 2019. The seller says, “This car has won many first in class car shows over the years. It has been written about in a European magazine article for the fuel injection system and was featured on the front of Moss Motors catalog.”