General Motors' small-block engines have powered its vehicles for decades. We're taking a look at two current models, the LT1 and LT4, to find the differences.

The LT4 generated most of its extra power over the LT1 with the help of a 1.74-liter Eaton Twin Vortices Series R1740 supercharger which divided all motor purists from power-hungry enthusiasts.

It's the end of an era. Chevrolet has built the final supercharged LT4 V8 engine destined for the 2024 Camaro ZL1 before it goes out of production.