The Vortec 8100 is a V8 truck engine. 2001-2006 Chevy 8.1L engines available at Roadmaster.
|2001 8.1L – Roller Cam, Vin G,E|
|02-03 8.1L – Roller Cam, Vin G,E|
|04-06 8.1L – Roller Cam, Vin G,E|
This is a redesigned Chevrolet Big-Block engine and was introduced with the 2001 full-size pickup trucks. An all-iron engine (block and heads) with two valves per cylinder. It retains the same bore centers as the old 7.4 L big-blocks. But stroke was upped by 9.4 mm (0.4 in) to reach 8.1L (496cuin) for a total of 107.95 mm (4.3 in) bore and 111 mm (4.4 in) stroke. Power output ranges from 325 hp (242 kW) to 550 hp (410 kW) and torque from 455 lb·ft (617 N·m) to 690 lb·ft (936 N·m). Vortec 8100s were built in Tonawanda, New York. The Vortec 8100 is the engine used in the largest Uhaul, their 26-foot (7.9 m) truck. GM stopped installing big block V-8’s in the Silverado HD trucks, when the GMT-800 series was discontinued in 2007.
Important differences between the Vortec 8100 and older big blocks include a changed firing order (1-8-7-2-6-5-4-3), a new 18-bolt head bolt pattern. Also different symmetrical intake ports, different oil pan rails and the use of metric threads throughout the engine. The fuel-injection system for the Vortec 8100 is nearly identical to that used on Gen III engines. Right down to the fuel and spark tables in the ECU.
- Silverado/GMC Sierra 2500HD & 3500HD (option)
- Suburban/GMC Yukon XL (option)
- Chevrolet Express 3/4 or 1 ton
- Avalanche 2500 (std on GMT800 2500)
- T-98 Kombat
- Chevrolet Kodiak
Satisfaction and peace of mind is what you experience when buying from Roadmaster. You won’t find better customer service and the thoroughness we offer to make sure what you’re looking for is correct. We know that’s what you expect. Buy from Roadmaster and you won’t be disappointed.
Contact us at 800-447-9899 or email us with your questions and requests.
In addition take a look at our dependable remanufactured engine process.
Follow us on our Facebook and Twitter page.
Furthermore, feel free to leave a comment. Share us as well!
Subscribe to our blogs and keep up with Technical Bulletins, Car Care Tips, engines and transmissions: