Type B
The 3,386 cc (3.4 L; 206.6 cu in)
Type B was produced from 1937 through 1955 as a more technically advanced version of the Type A. The design was based on the
Chevrolet 207 engine, and built under license but with metric dimensions and minor revisions to suit the local market. It had a four-bearing crank and shaft-mounted rocker arms, as did the Chevrolet engine.
The Type B was succeeded by the similar 3.9 L
Type F in 1955. The Type F is based on the larger G.M.C. 1939-63 L6 OHV engine in the same way that the Type A and Type B were based on the Chevrolet engines of their times.
An unrelated 4-cylinder diesel engine introduced in the 1970s was also called the
Type B.