---
id: what-engine-and-transmission-options-does-the-2026-silverado-hd-have
title: "What engine and transmission options does the 2026 Silverado HD have?"
category: guide
subtopic: silverado-hd-performance
page_type: guide
source_url: "https://www.markquartmotors.com/research/chevrolet/silverado-hd.htm"
tags: ["engine", "transmission", "power", "torque"]
questions:
  - "What engines are available?"
  - "Duramax diesel or gas?"
  - "What is the transmission?"
  - "How much horsepower and torque?"
related: [silverado-hd-overview, silverado-hd-towing]
dealer: Markquart Motors
---

The 2026 Silverado HD offers two powerful engine choices. The standard 6.6L V8 gas engine provides dependable strength for everyday tasks. For maximum power, choose the available Duramax 6.6L Turbo-Diesel V8, which delivers up to 470 horsepower and an impressive 970 lb-ft of torque.

Both engines pair with a 10-speed Allison automatic transmission, ensuring smooth gear transitions and optimal performance under load. This powertrain combination is engineered for heavy hauling and consistent reliability, whether you're towing large trailers, carrying heavy payloads, or tackling demanding workloads.

Advanced features like integrated braking systems and chassis engineering create a composed, controlled ride even with heavy loads. Want to compare engine options and find the right fit for your needs? Call Markquart Motors at (715) 833-0444 to discuss your specific requirements.