The “T/A” engine was more than simply a 340 with a trio of two-barrel carbs. It was comprehensively engineered for high-rpm ... be used on later Mopar 360 engines. Valley Performance left ...
This was already a pretty good engine, but Mopar wanted to make a high performance version of it. To do this, the company took the 3.906 bore of the 318 and increased it to 4.04 inches ...