![]() ![]() Other specialty versions included the Workhorse motorhomes, T98 armored vehicles, and the 26 foot U-haul truck. The Chevy versions that used this engine were the Silverado, Suburban, Express, Avalanche, and Kodiak, while GMC offered the engine in the Sierra and Yukon XL. The 8.1 L Vortec was offered a variety of platforms for GMC and Chevrolet. 8.1L Vortec 8100 V8 Engine SpecsĬoil-Near-Plug, Platinum-Tipped Spark Plugs, Low-Resistance Spark Plug Wiresģ-way Catalytic Converter, Exhaust Gas Recirculation, Positive Crankcase Ventilation, Evaporative Collection System Some other changes included new firing order, re-designed intake ports, and a conversion to metric threads throughout the engine, which no doubt had a major impact to tools required at the manufacturing plants as well as for mechanics who work on this engine. The bore was kept the same for the 8.1L engine, but the stroke was lengthened which provided the extra displacement. This V8 engine replaced the 7.4L Vortec as the high power option for the vehicles in which it was offered. The GM 8.1L Vortec engine was the last of the GM series of big block engines.
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