The third generation small block started with the LS1, a 5.7-liter V8 powering Corvettes, Firebirds, and Pontiac GTOs. More iterations would follow, with the Vortec 5300's first iteration, the LM7, ...
The Chevy 5.3 liter Gen III engine was installed in thousands of pickups and vans from 1999 through 2007. The majority of them were the RPO LM7 / VIN T engine with the cast iron block, but there were ...