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