Triumph churned out over 70,000 four-cylinder TR4 and TR4A cars from 1961 through 1967, but the market was demanding an uprated power plant. The TR4 made only about 104 bhp, and its competitors were already using six-cylinder motors. While… more»
Triumph churned out over 70,000 four-cylinder TR4 and TR4A cars from 1961 through 1967, but the market was demanding an uprated power plant. The TR4 made only about 104 bhp, and its competitors were already using six-cylinder motors. While… more»
