The 7M-GTE was an ultra high-performance engine used by Toyota in the late 1980's and early 1990's. It is part of the series of Toyota M engines. In the US, only one Toyota ever featured this engine: the Toyota Supra. This engine was incredibly advanced for its time. The 7M-GTE was simply a turbo version of the 7M-GE and was offered only in the Supra.
The engine had a 3.0L 24-Valve DOHC Twin Cam setup which provided plenty of power for the Supra. The 7M-GTE is an Inline-6, or "straight 6" engine. Due to incorrect torque specifications from the factory, the head gaskets on both the 7M-GE and 7M-GTE engines are prone to failure. However, with proper replacement of the head gasket using a higher torque setting, these engines have been known to be extremely reliable.
The 7M-GE and 7M-GTE were both discontinued sometime after 1992 with the demise of the Cressida in North America.