GMC 6500 Specs

by Joanna Swanson

GMC produces two trucks with the 6500 rating; the C-Series TopKick 6500 and the T-Series 6500. Both are medium-duty commercial-use trucks. The C-Series places the engine in front of the cab, while the T-Series places the cab on top of the engine to provide more interior space.

Wheelbase

Each series of truck has a selection of wheelbase lengths. The C-Series 6500 is available with a wheelbase from 128 inches to 260 inches without frame reinforcement and up to 296 inches with frame reinforcement. The T-Series 6500 is available with a wheelbase from 140 inches to 260 inches.

Engine

Several engine options are available for the C- and T-Series 6500 trucks. The C-Series truck may have an 8.1-liter Vortec V8 gasoline powered engine or a 7.8-liter Isuzu 6H diesel powered engine. The Vortec engine is able to produce 295 horsepower and 440 ft-lbs. of torque. The Isuzu engine has three options; 215 horsepower and 560 ft-lbs. of torque, 230 horsepower and 660 ft-lbs. of torque or 260 horsepower and 660 ft-lbs. of torque. The T-Series 6500 is available with the Isuzu 6H diesel engine with the same horsepower and torque options as above.

Transmission

The C- and T-Series 6500 trucks are available with several transmission options, both automatic and manual. The C-Series has 15 automatic transmission options with five or six speeds and available overdrive. Five manual transmissions are available, also with five or six speeds. The T-Series has 13 automatic transmission options with five or six speeds and two manual transmission options, both with six speeds.

Brakes

The type of braking system is another option on the GMC 6500 models. The C-Series 6500 is available with either a hydraulic split-brake system or one of three different air compressor braking systems. The T-Series 6500 is available with either a hydraulic split-brake system or a water-cooled air compression system.

About the Author

Based in Laramie, Wyo., Joanna Swanson has been writing in her professional life since 2004. She currently writes for various websites and enjoys reading a wide variety of books. Swanson holds a bachelor's degree in business administration from the University of Wyoming.