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Digital Subscriptions > Street Trucks > December 2018 > 5.3-LITER BLOCK BREAKDOWN


What makes them different— and which ones are best?

LS-based small block engines are extremely common in our industry both as daily driver workhorses as well as high-horsepower hotrods.

The V-8 was General Motors’ primary engine choice for its line of cars introduced in January 1995, engineered to be a “clean sheet” design using only rod bearings, lifters and common bore spacing as the longstanding Chevy small-block V-8. It was cast in aluminum for car applications and iron for most truck applications with some exceptions, including the Chevrolet TrailBlazer SS, Chevrolet SSR and a limited run of Chevrolet/GMC Extended Cab Standard Box Trucks.

With three generations of design and several versions of each generation, it made for a lot of parts numbers and confusion for anyone other than GM diehards. Luckily for us, Wikipedia is a rich resource of factual data, specifically about these small-blocks. What makes them all different? We figured you would ask that, so let’s explain.

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