I think this was the original wiki entry quoted:
"Emission regulations
<http://en.wikipedia.org/wiki/Automobile_emissions_control> saw a
progressive reduction in compression ratio for the 302 two-barrel, to
9.0:1 in 1972, reducing SAE gross horsepower to 210 hp (157 kW). In that
year U.S. automakers began to quote horsepower in SAE net ratings; the
302 two-barrel carried a net rating of 140 hp (104 kW). By 1975 its
power would drop as low as 122 hp (91 kW). Not until fuel injection
<http://en.wikipedia.org/wiki/Fuel_injection> began to appear in the
1980s would net power ratings rise above 200 hp (149 kW)."
And this from wiki as well to explain what is meant:
SAE horsepower
SAE gross horsepower
Prior to the 1972 model year, American automakers rated and advertised
their engines in brake horsepower (bhp), frequently referred to as *SAE
gross horsepower*, because it was measured in accord with the protocols
defined in SAE
<http://en.wikipedia.org/wiki/Society_of_Automotive_Engineers> standards
J245 and J1995. As with other brake horsepower test protocols, SAE gross
hp was measured using a stock test engine, generally running with few
belt-driven accessories and sometimes fitted with long tube (test
headers <http://en.wikipedia.org/wiki/Headers>) in lieu of the OEM
<http://en.wikipedia.org/wiki/Original_equipment_manufacturer> exhaust
manifolds. The atmospheric correction standards for barometric pressure,
humidity and temperature for testing were relatively idealistic.
] SAE net horsepower
In the United States the term "bhp" fell into disuse in 1971-72, as
automakers began to quote power in terms of *SAE net horsepower* in
accord with SAE standard J1349. Like SAE gross and other brake
horsepower protocols, SAE Net hp is measured at the engine's crankshaft,
and so does not account for transmission losses. However, the SAE net hp
testing protocol calls for standard production-type belt-driven
accessories, air cleaner, emission controls, exhaust system, and other
power-consuming accessories. This produces ratings in closer alignment
with the power produced by the engine as it is actually configured and
sold. The change to net hp effectively deflated power ratings to assuage
the auto insurance <http://en.wikipedia.org/wiki/Auto_insurance>
industry and environmental and safety lobbies.
] SAE certified horsepower
In 2005, the SAE introduced a new test protocol for engine horsepower
and torque <http://en.wikipedia.org/wiki/Torque>.^[12]
<http://en.wikipedia.org/wiki/Horsepower#cite_note-11> The new protocol
eliminates some of the flexibility in power measurement, and requires an
independent observer present when engines are measured. The test is
voluntary, but engines completing it can be advertised as "SAE-certified".
Many manufacturers began switching to the new rating immediately, with
multi-directional results; the rated output of Cadillac's
<http://en.wikipedia.org/wiki/Cadillac> supercharged
<http://en.wikipedia.org/wiki/Supercharger> Northstar
<http://en.wikipedia.org/wiki/GM_Premium_V_engine#Supercharged> V8
jumped from 440 horsepower (330 kW) to 469 horsepower (350 kW) under the
new tests, while the rating for Toyota's
<http://en.wikipedia.org/wiki/Toyota_Motor_Corporation> Camry
<http://en.wikipedia.org/wiki/Toyota_Camry> 3.0 L /1MZ-FE
<http://en.wikipedia.org/wiki/Toyota_MZ_engine#1MZ-FE>/ V6 fell from
210 horsepower (160 kW) to 190 horsepower (140 kW). The first engine
certified under the new program was the 7.0 L LS7
<http://en.wikipedia.org/wiki/GM_LS_engine#LS7> used in the 2006
Chevrolet Corvette <http://en.wikipedia.org/wiki/Chevrolet_Corvette>
Z06. Certified power rose slightly from 500 horsepower (370 kW) to
505 horsepower (377 kW).
Hendrik
Alex Chamberlain wrote:
On Fri, Apr 24, 2009 at 6:06 PM, Jim Cathey <j...@windwireless.net> wrote:
According to wikipedia, the 5.0 Mustang had about 140hp,
??? When?
Perhaps in early-'80s carbureted form. The late-'80s fuel-injected
5.0 GT was advertised at 225 hp, IIRC. Neither number is really
relevant to the engine in the misbegotten 190E I posted originally,
which I'm sure is built up quite a bit (otherwise what would be the
point)? Just as with a small-block Chevy, you can get 300+ hp out of
a Ford 5.0 with very little effort, and much more than that if you
have the money or are willing to sacrifice longevity.
Alex
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