1985 GMC Sierra Classic 4X4 Duramax 6.6 Diesel

This custom-built 1985 GMC Sierra Classic 4×4 represents the highest trim level of its era, upgraded with modern performance and durability. Originally a factory diesel truck and still titled as such, it now features a Duramax 6.6L LLY diesel engine paired with an Allison 5-speed automatic transmission.

The truck has been upgraded with a heavy-duty 1-ton K3500 chassis to handle the increased power and torque, ensuring exceptional strength and reliability. It’s also equipped with a rare NP205 steel gear transfer case, known for its durability and rugged performance.

This build perfectly combines the timeless style of a classic GMC with the power and reliability of modern engineering, making it as functional as it is striking.

6.6L LLY Duramax V-8 engine

Allison 5-speed automatic transmission

NP205 transfer case

Dana 60 front axle

14-bolt rear axle

4.10 ratio gears

Line-X bed liner

Fuel Maverick wheels

Dakota Digital gauges

TMI seats

AMP retractable running boards

EQUIPMENT

Power windows

Power locks

Cowl hood

Tonneau cover

Smoked cab marker lights

FASS fuel system