Moskvitch G4

The Moskvitch G4 were sports cars from Moskvitch released in 1963. Like the G3, they used the same engine as the Moskvitch 407, a 1358 cc pushrod four producing at 5500 rpm. Compared to Western racecars, the G4 was too heavy and suffered from poor aerodynamics. The G4 used a rigid spaceframe chassis, with aluminium skin.
In 1965, all three G4's were re-engined with units based on the engine in the Moskvitch 408 and redesignated G4A. The G4A also received smaller, 13-inch wheels in lieu of the earlier, 15-inch units. While the initial design had been fitted with a quarter of domestically produced Lenkarz-K99M motorcycle carburetors, the G4As were fitted with twin, imported Weber 40DCO carburettors. The engines also had the valve timing advanced, and new camshafts, giving at 5,600 rpm.
One G4A was fitted with a larger, 1.5-litre Moskvitch 412-based engine, the DM, rated at, becoming the G4M. During 1967–1968, the two remaining G4A's were converted into G4M's. Two G4M's were rebuilt into Moskvitch G5's in 1968. The third G4M was raced until 1972 – it was not converted to a G5, but it was updated with a twin-cam version of the 412 engine, producing. The G4's had independent suspension, both front and rear, and were successful in several USSR championships.