The Vortec 8100 (RPO L18) is a V8 truck engine. It is one of the redesigned Chevrolet Big-Block engines and was introduced with the 2001 full-size pickup trucks. It retains the same bore centers as the old 7.4 L big-blocks, but stroke was lengthened to exact 8.1L (496CID). It is an all-iron engine (block and [...]