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27 sty 2023 · The Allison 1000 and the ZF-6 6-speed manual transmission were the two transmission options for the 8.1 Vortec or normally called the 8100 Vortec. But if the Allison was too large for some vehicles, then GM often replaced it with the 4L85.
The GM 8.1L Vortec is a big block V-8 based loosely on the company's flagship 454 CID engine. The 8.1L shares the 454's 4.25 inch bore but features a longer 4.37 inch stroke length. At 496 inch cubic inches of displacement, the burly 8.1L Vortec is rated between 320 to 340 horsepower and 440 to 455 lb-ft of torque, depending on the model year.
25 lip 2022 · What is the best transmission? Consensus among owners and performance enthusiasts is that the Allison 1000 is the best transmission for the 8.1 Vortec. It can handle the most power and therefore doesn’t need to be built out as soon as the other transmission for high-horsepower applications.
20 sty 2024 · 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)...
9 sie 2021 · If you are looking to avoid the costly maintenance of a diesel engine and want to stick with the simplicity of an old-school gasoline V8, the reliability and brute force of the Vortec 8100 is a fantastic choice.
29 cze 2021 · Although the 8.1-liter gas motor had been able to keep up with the 6.6-liter Duramax V8 in its early years, by 2006 the turbodiesel had jumped to a startling 650 lb-ft of torque, giving it a nearly 50 percent advantage over the Vortec.
20 maj 2023 · GM built the engine from the smaller 454-cid (7.4 Vortec) big-block V8, and was the gasoline alternative to the larger Duramax LB7 diesel. Depending on the model it was equipped in, there were a variety of transmissions available. These included the Allison 1000, ZF 6-speed, and 4L85E automatic transmissions.
