West Coast Classics are proud to present this rare custom built with no expense spared 1971 Triumph Stag ZZ4 350 V8 5 speed manual convertible.
Custom build with $77,000 in receipts
Body and frame modified for the additional horsepower by 'Bones Fab Custom' of Camarillo, California
Chevy 350 CI ZZ4 crate V-8 engine
Edelbrock Pro-Flo Electronic Fuel Injection
Chevrolet T5 5-speed manual transmission with Hurst shifter
Currie 9" rear end 3.25 gears with True Trac Sportsman gear case
Wilwood brakes
Modified frame & body for the extra horsepower
Ford Orange Crush Pearl Paint
Unrestored factory hardtop
No soft top
Black interior
Factory windows with good glass
Mustang II front end
The Triumph Stag is a 2+2 classic British sports tourer built between 1970 and 1978 by the Triumph Motor Company styled by renown Italian designer Giovanni Michelotti. The car was launched nearly two years late, in June 1970, to a warm welcome at the international auto shows. In the UK the Stag was an immediate success for Triumph with a 12-month waiting list rapidly being established and cars changing hands at well above list price.
Unfortunately it rapidly acquired a reputation for mechanical unreliability, usually in the form of head gasket failure due to cylinder head heat distortion, leading to overheating, along with other issues such as the simplex roller link chains. These problems arose from a variety of causes. The engines on the original stock cars were notoriously fundamentally flawed. Its water circulation wasn?t the best design, the water pump was poor and low-grade aluminium alloy was used for the heads, it?s not rocket science, these issues meant having to replace the timing chains every 30,000 miles and constantly making sure the engine and radiator do not silt up.
Therefore this is the only way one should buy a Triumph Stag, customized with modern upgrades as per this particular example, with over $77K invested in the build.
Custom fitted and equipped with GM's 350ci ZZ4 crate engine which is a true street engine, designed to run on 92-octane pump gas with GM claiming the ZZ4 will make a respectable 355 hp and 400 lb-ft of torque. The ZZ4 crate engine has gained cult status among vintage auto and muscle car enthusiasts.
It first appeared in 1996, and has become the longest-running ZZ-series engine ever produced, with manufacturing lasting until 2014. Equipped with aluminum cylinder heads, a forged steel crankshaft, hydraulic roller lifters, and "hypereutectic" high-silicon aluminum pistons, the small-block ZZ4 V8 boasts 5.7 liters of displacement (350 cubic-inches) and a base output of 355 horsepower and 418 pound-feet of torque. The ZZ4's power and torque come secondary to the engine's reputation for reliability, durability, and how it responds to tuning and aftermarket upgrades. It could effortlessly handle 100 more horsepower with a stage 5 rebuild, with some managing to squeeze out a dyno-certified 527 horsepower using a bevy of high-performance and bolt-on parts.
Like the LS3 crate engine, the ZZ4 is from American legacy auto giant General Motors built under the Chevrolet brand. Chevy began production of the ZZZ series of crate engines in 1990 with the H.O 350. It came with L98 Corvette aluminum cylinder heads, a four-bolt main, a forged one-piece main seal crankshaft, and a 9.8:1 compression ratio to produce 345 horsepower and 370 pound-feet of torque.
