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Prior to the 1972 model year, American automakers rated and advertised their engines in brake horsepower, bhp, which was a version of brake horsepower called SAE gross horsepower because it was measured according to Society of Automotive Engineers (SAE) standards (J245 and J1995) that call for a stock test engine without accessories (such as ...
A high-performance 327 cu in (5.4 L) variant followed, turning out as much as 375 hp (280 kW) (SAE gross power, not SAE net power or the current SAE certified power values) and raising horsepower per cubic inch to 1.15 hp (0.86 kW). From 1954 to 1974, the small-block engine was known as the "Turbo-Fire" or "High Torque" V8.
SAE J2807 is an SAE standard for determining the towing capacity of passenger cars, multipurpose passenger vehicles, and trucks. [1] It was written to allow consumers to more accurately compare vehicles from different manufacturers. First released in 2008, it has been periodically updated, with the 2020 version being the most current.
The 1965 4.2 XK fitted to the carburetted E-Type had a listed output of 265 hp (198 kW) SAE gross; the 1986 fuel injected 4.2 XK fitted to the series 3 XJ6 was listed at 202 hp (151 kW) DIN net. [ citation needed ] Variables such as compression ratio, cam lifts and durations, and fuel consumption rate for each engine during testing would, at a ...
Vehicle size classes are series of ratings assigned to different segments of automotive vehicles for the purposes of vehicle emissions control and fuel economy calculation. . Various methods are used to classify vehicles; in North America, passenger vehicles are classified by total interior capacity while trucks are classified by gross vehicle weight rating (GV
The 304 has a displacement of 304 cu in (5.0 L), which produced 210 hp (157 kW; 213 PS)(gross rating) in 1970-71 and was built starting in 1970. [20] Output declined yearly thereafter, initially due a shift from SAE Gross to SAE Net horsepower. 1972-75 models were rated at 150 hp (112 kW; 152 PS) (net rating from 1972 onwards).
The indicated engine power outputs also changed from those advertised through 1971, to more realistic calculations starting in 1972. The actual power output of the engine remained the same. Still, the U.S. automobile industry followed the SAE horsepower rating method that changed from "gross" in 1971 and prior years to "net" in 1972 and later ...
The factory-quoted horsepower rating of 245 bhp (183 kW; 248 PS) was measured using the SAE (gross) system current in the USA at the time the 420/Sovereign was sold there. The SAE (gross) system excluded many accessory drives and often used non-standard induction and exhaust systems and so was replaced by the more accurate SAE (net) system in ...