How much horsepower does a 1974 Honda CB750 have?
Approximately 67 horsepower (about 50 kW) from its 748cc inline-four, with peak power typically reached around 8,000 RPM.
Engine and performance basics
The 1974 Honda CB750 relied on a 748cc air‑cooled inline-four engine with four carburetors, delivering a power figure that modern riders often measure as a benchmark for the era. The commonly cited factory rating places peak output near 67 horsepower, with torque peaking in the mid-range to mid‑high RPM band. Variations in reported horsepower can occur due to market differences, emission tuning, and testing methods of the time.
Market variations and model-year context
Power figures for the CB750 varied slightly by market and year, reflecting emission regulations and tuning choices. Below is a snapshot of typical figures you might encounter when researching a 1974 CB750.
- United States market CB750 (early 1970s): typically listed around 67 hp at about 8,000 rpm; torque generally in the 41–42 ft-lb range at around 6,500–7,000 rpm.
- European (UK/continental) market: power figures are broadly similar, often quoted in the same general range (roughly 65–68 hp) but can vary with emissions-tuning and revisions across production years.
Before examining these figures, note that they reflect commonly cited factory ratings for the U.S. and European markets and may differ slightly depending on the exact model and production batch.
In practice, most 1974 CB750 motorcycles deliver power in the high-60s horsepower range, with variations arising from market-specific tuning and the condition of the engine and carburetion.
Notes on measurement and restoration
Horsepower figures from the era were typically measured at the crankshaft, not at the rear wheel, meaning drivetrain losses reduced the usable horsepower for the rider. When restoring or dyno-testing a 1974 CB750 today, owners may see a range of results depending on exhaust systems, fuel, and tuning choices.
Summary
The 1974 Honda CB750 is commonly characterized by roughly 67 horsepower from its 748cc inline-four, with minor variations by market and emission tuning. This figure helped establish the CB750’s reputation for strong, usable performance in its day and continues to inform discussions of vintage bike value and restoration today.
What is the top speed of the CB750?
The top speed of a Honda CB750 varies significantly by model and condition, but classic models like the original SOHC CB750 are typically capable of around 125 mph. Newer models, such as the 2025 CB750 Hornet, have a slightly higher claimed top speed of around 127-130 mph, with a factory limiter around 125-126 mph.
This video discusses the performance and top speed of the 2025 Honda CB750 Hornet: 1m2 Wheel DynoWorksYouTube · Jun 8, 2025
Classic CB750s (1969-1978)
- Stock top speed: Around 125 mph (201 km/h).
- Performance: Magazines of the era reported this speed, and bikes in good condition can still achieve it.
- Factors affecting speed: Engine condition, rider weight, and modifications can all impact performance.
Newer CB750 models (e.g., Hornet)
- 2025 CB750 Hornet: Claimed top speed is around 127-130 mph, though a factory limiter activates around 125-126 mph.
- Performance: The engine is capable of higher speeds, but the limiter and other factors like lean fuel mapping can restrict performance from the factory.
- Other models: The 1992-2001 CB750 F2 has a top speed of around 128 mph, with a quarter-mile time of 12.4 seconds.
How much is a 1974 Honda CB750 worth?
A 1974 Honda CB750's value varies significantly based on its condition, ranging from roughly $2,000 for a project bike to over $10,000 for excellent or rare examples. A well-maintained, good-condition bike might be valued around $1,870-$6,900, while auction prices can go much higher for pristine examples. Key factors influencing the price include originality, mileage, maintenance history, and mechanical condition.
Value by condition
- Poor/Project: A bike needing extensive work, or with significant cosmetic or mechanical issues, could sell for under $3,000.
- Good: A solid, running example with average mileage is typically valued in the $1,870 to $6,900 range, depending on specific condition and features.
- Excellent/Showroom: Bikes in exceptional condition, with low mileage and high originality, can command prices over $10,000, with some auction examples reaching over $23,000.
Factors that influence the price
- Originality: Bikes with mostly original parts are more valuable than those with many aftermarket modifications.
- Mechanical Condition: A well-running bike with a recently rebuilt engine or carbs will be worth more. Engine and brake components are common maintenance items that can affect value.
- Mileage: Lower mileage generally correlates with a higher value, though "time on the odometer" (TMU) is common for vintage bikes, as seen in listings.
- History and Title: A clean title and a documented history, including maintenance records, add value.
- Appearance: The bike's original paint color, finish, and overall cosmetic condition play a significant role in its appeal and price.
Where to find current value information
- Online Marketplaces: Check sites like Bring a Trailer, Classic.com, and Facebook groups dedicated to the Honda CB750 for recent sales of similar models to gauge current market prices.
- Valuation Guides: Consult resources like Hagerty or J.D. Power for their valuation estimates, though these are general guides and may not reflect the specific nuances of individual bikes.
What was the fastest motorcycle in 1974?
Here are 12 of the fastest motorcycles from the decade when sanity went out the window.
- 1970 Honda CB750 -- 125 mph.
- 1975 Moto Guzzi Le Man Mk1 - 130 mph.
- 1976 Laverda 1000 3C - 140 mph.
- 1974 Ducati 750 Super Sport -- 140 mph.
- 1978 Kawasaki Z1RTC - 145 mph.
- 1979 Dunstall Suzuki GS1000CS - 145 to 150 mph.
What's so special about the CB750?
Our 755cc liquid-cooled parallel-twin engine, premium Showa® suspension, and open riding position combine to create the perfect naked middleweight streetfighter.
