* Specific engine code: The 350 cubic inch engine was offered in various configurations with different carburetion, camshafts, and other internal components, all impacting horsepower output. Chevrolet used different engine codes (like L48, L82, etc.) to differentiate these versions. Without knowing the specific engine code, you can't determine the precise horsepower.
* Modifications: Conversion vans were often modified after leaving the factory. Owners might have added performance parts or altered the engine, changing the horsepower from the original rating.
* Advertised vs. Actual: Advertised horsepower figures can sometimes differ from real-world testing results.
To find the horsepower, you'd need the specific engine code from the vehicle's documentation (like the VIN decoder or owner's manual). Even then, the figure would represent the manufacturer's *rated* horsepower, not necessarily the actual horsepower the engine produced in any specific van. The range would likely be between 150 and 200 hp, but it's impossible to say for certain without more information.
