The Vortec 8100 Is Reliable, But Not That Environmentally Friendly . As can be expected, one of the biggest drawbacks to the most reliable big-block V8 is the poor fuel economy.

Back to the history lesson, the Vortec 8100 was part of a final wave of domestic, gas-burning truck engines that included the 1994 8.0L Dodge V-10 and 1997 6.8L Ford V-10.

GM set out to make the Vortec 8100 a tough and resilient engine for folks looking to tow. It's based on the old-school Gen-VII Big Block and effectively is a 454 with a longer (4.37-inch) stroke.

Chevy's Vortec 8100 — AKA the L18, AKA the Vortec 8.1 — was the last of The General's big block V8s, a line of engines that traced its lineage clear back to the fire-breathing muscle cars of ...

Big-block V8s made history during the muscle car era, but some managed to survive much longer than some enthusiasts think ...

Road Test: Hummer H1 Vortec 8100. Cure for the Hummer horsepower blues. Todd Lassa Writer Oct 28, 2002. See All 2 Photos.

The 8.1-liter Vortec V8 from General Motors, also known as the 8100 Vortec, is presumably the last big block V8 engine from the automaker. With 8100 Vortec production ranging from its introduction ...

It's engine time. Just as Ford were announcing their Cammer crated engine, General Motors were also launching an automotive version of their high-output Vortec HP3 8100 V-8 marine engine.

8 Dec 2021, 06:09 UTC · By: Benny Kirk / The cheap and poorly thought out engineering of the Avalanche's 8.1 liter 330 horsepower Vortec 8100 engine is all too apparent ...

They're also enhanced by a pair of new V-8 engines -- the Duramax 6600 diesel and the Vortec 8100. The Duramax replaces GM's old 6.5-liter turbo-diesel V-8, ...

Call it what you will, the 8100 was the result of GM bumping the Vortec 7400/454's 4.00-inch stroke to 4.37, thanks to longer connecting rods and a block with taller decks. Sharing the 454's 4.25 ...