Background
Hand-built in Wales, the Gilbern GT proves that a ‘bitsa’ car can be made to amount to far more than the sum of its parts. First launched in 1959, the early cars had a BMC ‘A’ series engine and gearbox fitted within a spaceframe chassis that supported Austin A35 front suspension and steering, and a modified Morris Minor rear axle that sported twin trailing arms, coil spring damper units, and a transverse Panhard rod. Options included a Shorrock supercharger and even a 1098cc Coventry Climax engine, although both were rare – and even rarer now.
The one-piece fibreglass bodyshell was rivetted to the spaceframe, making for a light but stiff car that handled uncommonly well. The body panels, which are decorative rather than structural, included front and rear fibreglass wings that were a direct mould from the Austin A40 Farina, while the windscreen was that of a Riley 1.5. In less skilled hands the Gilbern GT might have looked a bit of a mutt, but the Welsh craftsmen that designed and built it turned it into something that looked uncannily like a mini Aston Martin and offered genuine 2+2 seating into the bargain.
From 1962, the GT was fitted with the MGA’s engine and ‘box, which The Motor claimed gave the Gilbern a top speed of 94.3mph and 0-60mph acceleration of 13.8 seconds. Heady stuff, back in the early sixties.
But clearly not heady enough for the canny Celtics, because 1963 saw the introduction of the MGB’s three-bearing engine, gearbox and overdrive. Now christened the 1800GT, the MGB donated its coil-sprung live rear axle, too.
The car’s weight, which had always hovered around the 825kgs mark, meant that even these modest power yields surprisingly potent performance: the MGB’s 95bhp and 106lb/ft of torque served up a 0-60mph time of just 9.7 seconds, which was more than four seconds faster that the model it replaced.
The Gilbern now had the power to match its looks and chassis, and the MGB-based (chassis prefix ‘B’) were by far the most common, accounting for 175 cars out of a total production run of around 202.
Interestingly, cars with the chassis prefix ‘C’ were engineered to accommodate the two-litre V4 Ford Corsair engine, but reliability issues mean that most were fitted with the four-cylinder MGB engine instead.
Available as a factory built car or as a homebuilt kit to save forking out for the purchase tax, the Gilbern 1800GT ceased production in 1966. Its demise was, sadly, not because buyers didn’t want them but because Gilbern couldn’t arrange a reliable supply of parts from BMC…







