I have a low miled 26 foot GMC TopKick SLE Box Truck that I bought to move my family from Wisconsin to Idaho. This was a much cheaper option than renting a similar sized U-Haul truck. Truck performed superbly without a problem. Not only was it slightly over the weight limit, but I was also towing a trailer behind it...it went up and over the mountains as if it were empty. From everything I"ve read, the 8.1 Liter engine is the best that ever came out of GMC. I have copied and pasted what I found under my own comments.
The tread is in great shape (as can be seen in the pictures), two of the tires are brand new ($1200), with only the miles from Wisconsin on it. I also have one spare tire.
I have had a friend who is a DOT State Inspector look at this truck after my arrival in Idaho, he also says the truck is in excellent shape, but does have oil seapage coming from the valve cover gaskets. It never leaked enough to leave any spots on our driveway though. He also said the brakes will need new pads in about 35-40,000 miles but are great for use currently. He found nothing else that was needed at this time. I bought it from a friend in Wisconsin that kept up all maintenance on it in his U-Haul business.
Whoever buys this will definitely be happy with their purchase, happy bidding. Here is what the current literature says about this engine, it is a powerhorse made for towing huge loads without complaint!
8.1L Vortec 8100 Engine SpecsThe GM 8.1L Vortec engine was the last of the GM series of big block engines. This V8 engine replaced the 7.4L Vortec as the high power option for the vehicles in which it was offered. The bore was kept the same for the 8.1L engine, but the stroke was lengthened which provided the extra displacement.
Some other changes included new firing order, re-designed intake ports, and a conversion to metric threads throughout the engine, which no doubt had a major impact to tools required at the manufacturing plants as well as for mechanics who work on this engine.
The 8.1 L Vortec was offered a variety of platforms for GMC and Chevrolet. The Chevy versions that used this engine were the Silverado, Suburban, Express, Avalanche, and Kodiak, while GMC offered the engine in the Sierra and Yukon XL. Other specialty versions included the Workhorse motorhomes, T98 armored vehicles, and the 26 foot U-haul truck.
Many of these engines have made a significant number of miles, but the main reason to get an engine like this is for the power and towing capability. The ability of this engine handle heavy loads, particularly in combination with an Allison transmission is one of the things that makes this engine so popular.
8.1 Vortec Performance Specs The power and torque of this engine varied widely depending on specific application, as is common with all engines used across a variety of platforms. The highest power rating was 340 horsepower, reached at 4200 RPM, while the highest peak torque ever reached was 455 lb-ft, achieved at 3200 RPM.
The exact volume did vary slightly throughout the production of this engine, ranging from 8.095 liters to 8.128 liters, or about 494 cubic inches, created by slight changes to the cylinder head.
The displacement was achieved with a bore of 4.25 inches, carried over from the 7.4 L engine, and a stroke of 4.37 inches, an increase of 0.37 inches in comparison to the 7.4 L that it replaced.
Head and Block Construction This 8.1 L engine is made primarily of iron, using both a cast iron block and cylinder head.
This engine used a conventional camshaft in the block with pushrods. There were 2 valves per cylinder, 1 intake and 1 exhaust to give a total of 16 valves for this V8 engine.
This engine also used what was essentially a carryover electronic fuel injection system from the 7.4L.
The 8.1L Vortec was the final big block gas engine from GM to date. This engine was primarily created for work purposes and was very popular among people who needed that kind of power.
| Condition: | Used | Year: | 1994 |
| VIN (Vehicle Identification Number): | 1GDE6H1P2RJ501229 | Mileage: | 204,178 |
| Number of Axles: | GMC | Make: | GMC |
| Engine Make: | GMC | Model: | TopKick 8500 |
| Engine Horsepower: | 330-340 | Class: | Class 5 (16,001-19,500 lbs.) |
| For Sale By: | Private Seller | Transmission Type: | Automatic |
| Vehicle Title: | Clear | Power Options: | Air Conditioning |
