Maserati 3500 GTi

3500 GT

1961 to 1964

Dubbed 3500 GTi (thus becoming the first GTI model ever!), the car now boasted a power output of 235 hp and a top speed of over 230 kph (144 mph). Maserati had started experimenting with its own fuel injection designs in 1954 under the guidance of Chief Engineer Giulio Alfieri. Many different systems were tested and several prototypes were built, providing Maserati with plenty of expertise in this specialist area. The first application of direct fuel injection (supplied by Bosch) in a Maserati had come on the 1955 250F Formula 1 car .
For road-going production, a partnership was formed with British supplier Lucas, and the 3500 GTi became the first Italian road car equipped with indirect petrol injection, whilst the mechanical system was also used to good effect on the second series 5000 GT. The increase in horsepower (15 bhp) was less significant than the increase in smoothness and driveability.
A carburettor version of the 3500 GT remained available for the more traditional members of Maserati’s clientele. Four-wheel disc brakes became fitted as standard on all 3500 GTs from 1962. There were also some subtle revisions to the styling that same year with less chrome and new taillights. The 3500 GT’s great success necessitated the creation, in the early 1960s, of a true assembly line with a raised ramp that allowed engineers to work both above and below the car simultaneously.
Looking at the 1961 sales brochures, there were some external differences between the carburettor version and the injected 3500 GT: the latter sported rectangular side indicators and the side window was divided with a fixed 3/4 piece, while the former adopted a thicker chrome surround to the front grille.

Technical specifications

Model 3500 GTi
Maserati internal code Tipo AM101/I
Production start 1961
Number Produced 1980 (combined production for both 3500 GT and GTi coupés)
Ignition twin-plug, coil ignition
Lubrication single oil pump
Transmission 5-speed + reverse synchronised, rear wheel drive, single dry plate clutch with flexible coupling and hydraulic drive
Reduction 0,044641204
Gear ratios I=3.02; II=1.85; III=1.29; IV=1; V=0.85; R=3.17
Chassis tubular ladder-frame platform chassis
Front suspension double wishbones, coil springs, Girling telescopic dampers
Rear suspension longitudinal leaf springs, Girling hydraulic telescopic dampers and stabilizing bar
Brakes front disc brakes
Brakes rear servo-assisted hydraulic drum brakes
Steering worm and sector
Cooling system water-cooled
Length 188.19 inches (4,780 mm)
Width 69.29 inches (1,760 mm)
Height 51.18 inches (1,300 mm)
Wheelbase 102.36 inches (2,600 mm)
Front track 54.7 inches (1,390 mm)
Rear track 53.5 inches (1,360 mm)
Dry weight 1,300 kg
Kerb weight 3,174 lbs (1,440 kg)
Tyres front/rear Pirelli 185x16
Wheels steel wheels 5.50x16
Top speed 148 mph (238 km/h)
Bodywork two-door, 2+2 coupé
Fuel tank 16.50 Imperial gallons / 23 US gallons (75 litres)
Production dates 1961-1964
Engine straight 6
Bore and stroke 86x100 mm (3.38x3.94 inches)
Total displacement 3,485.29 cc (212.7 c.i.)
Displacements (unitary) 580.88 cc
Compression ratio 8.08.01
Maximum power 235 bhp at 5,500 rpm
Maximum torque 35 Kgm (254 lbs/ft) at 3,500 rpm
Timing gear two valves per cylinder, twin overhead camshafts (chain driven)
Fuel feed naturally aspirated, Lucas indirect fuel injection
Fuel & lubricant N.O 98/100 RM