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nominal horsepower is derived from the size of the engine and the piston speed and is only accurate at a steam pressure of 48 kPa (7 psi); [28] 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
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.
In 2011, Super Chevy Magazine conducted a chassis dynamometer test of a well documented, production-line, stock but well-tuned L-72 "COPO" Camaro, and recorded a peak 287 hp (214 kW) at the rear wheels, demonstrating the substantial difference between 1960s-era SAE "gross" horsepower ratings and horsepower at the wheels on a chassis dynamometer.
The 2.5 L engine was rated at 137 hp (102 kW; 139 PS) SAE gross or 120 hp (89 kW; 122 PS) DIN and peak torque was rated at 145 lb⋅ft (197 N⋅m) SAE gross or 132 lb⋅ft (179 N⋅m) DIN. [6] The 2.5-litre version ended production in 1977 along with the Essex V4 engine. [11]
The HT-HQ advertised power figures for the 253 and 308 were respectively: 185 hp and 240 hp. The SAE Gross figures for these engines was 175 hp and 227 hp. GMH Technical and Engineering literature shows these revised power figures for HJ but it took a while for it to appear in Sales literature - LX Torana release information shows the 4.2L as ...
At its introduction it was rated at 400 hp (298 kW), SAE gross, and 550 lb⋅ft (746 N⋅m) of torque. For 1971, compression was reduced from 10.0:1 to 8.5:1, the lowered compression ratio dropped the 500's gross output from 400 bhp (298 kW) to 365 bhp (272 kW), or 235 hp (175 kW) in the new SAE net ratings. By 1976, its final year, it had ...
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.
It produced 110 hp (82 kW) net and 205 lb⋅ft (278 N⋅m). SAE gross power was 150 hp. [20] The 260 V8 received VIN code "F" and had a sales code of LV8. [20] This was the first engine to use the smaller Rochester Dualjet two-barrel carburetor, the only carburetor used on the 260.