* No Standard Maximum: Trucks, unlike cars, don't usually have a strict "top speed" limit set by the manufacturer. Their speed is more dependent on factors like:
* Engine Power: The 165 hp engine is a good starting point, but it doesn't tell the whole story.
* Gear Ratios: The truck's transmission and final drive ratios determine how engine power translates into speed.
* Load: A truck carrying a heavy load will be significantly slower than an empty one.
* Aerodynamics: Truck aerodynamics play a role, though it's less crucial than in cars.
* Legal Limits: Speed limits are governed by laws, and trucks often have lower speed limits than cars.
* Limited Information: Finding exact specifications on a 48-year-old truck model is very difficult.
How to Possibly Find Information:
1. Search for Manuals: If you can find an owner's manual or a workshop manual for the specific Fiat 673 model (including the chassis and transmission), you might find details about the expected top speed in certain conditions.
2. Vintage Truck Forums: There are online forums and communities dedicated to vintage trucks. Reaching out to enthusiasts who own or have experience with this model might give you insights.
Important Note: It's essential to prioritize safety. Don't try to push the truck to its maximum speed without proper knowledge and preparation.
