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indicated or gross horsepower is the theoretical capability of the engine [PLAN/ 33000]; brake/net/crankshaft horsepower (power delivered directly to and measured at the engine's crankshaft) equals indicated horsepower minus frictional losses within the engine (bearing drag, rod and crankshaft windage losses, oil film drag, etc.);
Brake horsepower per cubic centimeter or (bhp/cc) is a figure of merit that is used to indicate the 'state of tune' of an internal combustion engine. It is defined as the ratio of the engine's net power output to its displacement, the internal size. Power is measured at its rated speed and full throttle.
However, it is the power a car can produce at the wheels (wheel horsepower or whp) that matters when it comes to acceleration performance. Wheel horsepower equals brake horsepower minus drivetrain losses, which can be anywhere from about 10% to 25%. [12] Power-to-weight ratio: hp/lb hp/lb W/kg acceleration higher is better Propulsive efficiency
The advertised power drop from the 1971 ratings to the ones for the 1972 model years (for example, the 1971 304 produced 210 hp and the 1972 304 was 150 hp) is not due to any engine changes, but an industry-wide shift from SAE Gross (also known as "brake horsepower" or "bhp") to SAE Net power ratings.
Maximum horsepower: 200 at 4,600 rpm: 132.5 at 4,600 rpm: 94 at 3,400 rpm Net brake horsepower: 140 at 4.000 rpm: 116 at 4,000 rpm: 79 at 3,400 rpm Speed (miles per hour) on 3 1 ⁄ 2 percent slope with towed load in 4th gear: 41: 0: 0 Cruising range (miles) 300: 225: 122 Weight distribution (percent) Front: 44: 36: 42 Rear: 56: 64: 58 Ground ...
Brake-specific fuel consumption (BSFC) is a measure of the fuel efficiency of any prime mover that burns fuel and produces rotational, or shaft power. It is typically used for comparing the efficiency of internal combustion engines with a shaft output.
Last car on list measured by SAE gross power. [72] Porsche 959 S: 1988 379 kW (508 hp; 515 PS) ... 736 kW (987 hp; 1,001 PS) 310 produced (16.4 and Grand Sport ...
In contrast, the 4.6, 4.7, and 5.0 strokers use the 258 cranks, but retain the 4.0 connecting rods. Output for 1971–1973 models (gross): Horsepower 200 hp (149 kW; 203 PS) at 4400 rpm; Torque 280 lb⋅ft (380 N⋅m) at 2200 rpm; Compression ratio 9.5:1; Output for 1974 models (gross): Horsepower 200 hp (149 kW; 203 PS) at 4400 rpm