Driving Line compares the GM 4.2-liter inline-six-cylinder Vortec 4200 to Toyota's 2JZ engine, one of the most powerful inline-6 engines ever put in a production car. While the production GM 4.2 ...

Many bemoan the relatively underpowered nature of GM's large engine, but its rather ... Older GM big blocks use a 1-8-4-3-6-5-7-2 procession, whereas the Vortec 8100's firing order ...