Revised SAE hp/tq ratings
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Joined: Sep 1998
Posts: 4,320
From: Memphis
Revised SAE hp/tq ratings
http://www.findarticles.com/p/articl...1/ai_n13815480
I know the new IS250/350 that has come out is the first model I've seen to use these ratings. It's rated at 306hp and 277 torque but from what I was reading it would have been 315 horsepower and 285 torque using the old ratings system.
It seems that these ratings do a much better job of keeping a manufacturer from underrating or overrating a car for marketing or insurance purposes or whatever, but also take a more conservative measurement than before.
They are not mandentory though, so I might be a little more wary of a manufacturer who has decided not to make the switch.
Along the same lines, the 4.3L V8 used in the SC430, LS430, and GS430 is getting downrated in power to 288 HP @ 5600 RPM and 317 Lb. Ft. @ 3400 RPM instead of the previous rating of 300 hp @ 5,600 rpm, 325 lb-ft torque @ 3,400 rpm. This is the 4.3L V8's last year in production, however, to my knowledge. Soon to be a heavily upgraded version using the same basic design w/ 4.6L and 350+hp SAE rated.
Anybody know anything more about these new ratings and which manufacturers are going to start using them voluntarily?
I know the new IS250/350 that has come out is the first model I've seen to use these ratings. It's rated at 306hp and 277 torque but from what I was reading it would have been 315 horsepower and 285 torque using the old ratings system.
It seems that these ratings do a much better job of keeping a manufacturer from underrating or overrating a car for marketing or insurance purposes or whatever, but also take a more conservative measurement than before.
They are not mandentory though, so I might be a little more wary of a manufacturer who has decided not to make the switch.
Along the same lines, the 4.3L V8 used in the SC430, LS430, and GS430 is getting downrated in power to 288 HP @ 5600 RPM and 317 Lb. Ft. @ 3400 RPM instead of the previous rating of 300 hp @ 5,600 rpm, 325 lb-ft torque @ 3,400 rpm. This is the 4.3L V8's last year in production, however, to my knowledge. Soon to be a heavily upgraded version using the same basic design w/ 4.6L and 350+hp SAE rated.
Anybody know anything more about these new ratings and which manufacturers are going to start using them voluntarily?
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Joined: Aug 2002
Posts: 3,650
From: Indianapolis, IN
Re: Revised SAE hp/tq ratings
I believe the new LS7 was the first engine to be publically announced at that new rating system (rated at 505 hp/470 lb-ft). I think there was a press release about it, coinciding with the announcement of the new rating system.
Don't recall any others specifically.
EDIT: Also, it would not surprise me if many (all?) GM engines were rated this way for '06. Or at least all new for '06 and later engines. The new Impala engines are rated at 211 hp (3.5L), 241 hp (3.9L), 303 hp (5.3L LS4), for example...
Don't recall any others specifically.
EDIT: Also, it would not surprise me if many (all?) GM engines were rated this way for '06. Or at least all new for '06 and later engines. The new Impala engines are rated at 211 hp (3.5L), 241 hp (3.9L), 303 hp (5.3L LS4), for example...
Last edited by 96_Camaro_B4C; Jul 26, 2005 at 04:37 PM.
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Re: Revised SAE hp/tq ratings
If I am not mistaken, '06 Vettes use the SAE system, which is why the LS7 ended up at 505 h.p.. Not sure if any other GM vehicles are using this system.
Not even exactly sure about this, just something I seem to have read regarding the Z06.
Not even exactly sure about this, just something I seem to have read regarding the Z06.
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Joined: Nov 2000
Posts: 641
From: Dollars, Taxes
Re: Revised SAE hp/tq ratings
Originally Posted by Threxx
http://www.findarticles.com/p/articl...1/ai_n13815480
I know the new IS250/350 that has come out is the first model I've seen to use these ratings. It's rated at 306hp and 277 torque but from what I was reading it would have been 315 horsepower and 285 torque using the old ratings system.
I know the new IS250/350 that has come out is the first model I've seen to use these ratings. It's rated at 306hp and 277 torque but from what I was reading it would have been 315 horsepower and 285 torque using the old ratings system.
The zee oh sicks was the first!!!!Unless I'm mistaken it's ratings went from 500/475 to 505/470......
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Joined: Sep 1998
Posts: 4,320
From: Memphis
Re: Revised SAE hp/tq ratings
Originally Posted by WJH'sFormula
NUH UH sushi boi!!!! The zee oh sicks was the first!!!!
Unless I'm mistaken it's ratings went from 500/475 to 505/470......
The zee oh sicks was the first!!!!Unless I'm mistaken it's ratings went from 500/475 to 505/470......
I just didn't notice the Z06's new ratings. Actually I always thought it was 500/500... shows how much I was paying attention. Once you get past a certain power level I guess 5 horsepower just doesn't really catch your eye and make you say "woah, what changed?".
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Joined: Jun 2005
Posts: 1,011
Re: Revised SAE hp/tq ratings
Originally Posted by Threxx
"the first model I've seen to use these ratings"
I just didn't notice the Z06's new ratings. Actually I always thought it was 500/500... shows how much I was paying attention. Once you get past a certain power level I guess 5 horsepower just doesn't really catch your eye and make you say "woah, what changed?".
I just didn't notice the Z06's new ratings. Actually I always thought it was 500/500... shows how much I was paying attention. Once you get past a certain power level I guess 5 horsepower just doesn't really catch your eye and make you say "woah, what changed?".
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Joined: Sep 1998
Posts: 4,320
From: Memphis
Re: Revised SAE hp/tq ratings
Originally Posted by R377
Interesting that when using a common system, GM's ratings go up and Toyota's go down 
I'd really love to see if Nissan's VQ can pull 300 HP in that test.
I'd really love to see if Nissan's VQ can pull 300 HP in that test.
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Joined: Nov 2000
Posts: 2,712
From: Ontario
Re: Revised SAE hp/tq ratings
Originally Posted by Threxx
Did all of GM's ratings go up or just the LSX motors? The LSX motors seem to be habitually underrated.
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Joined: Feb 2003
Posts: 658
From: Madisonville, Louisiana
Re: Revised SAE hp/tq ratings
Originally Posted by R377
AFAIK only the LS7 has been through the new test. GM plans to use it for all new/re-certified motors though.
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From: The Land of Pleasant Living
Re: Revised SAE hp/tq ratings
Originally Posted by Threxx
"the first model I've seen to use these ratings"
I just didn't notice the Z06's new ratings. Actually I always thought it was 500/500... shows how much I was paying attention. Once you get past a certain power level I guess 5 horsepower just doesn't really catch your eye and make you say "woah, what changed?".
I just didn't notice the Z06's new ratings. Actually I always thought it was 500/500... shows how much I was paying attention. Once you get past a certain power level I guess 5 horsepower just doesn't really catch your eye and make you say "woah, what changed?".
Or in this case, you only read what you want to read....Selective reading there you go. I do believe I read the article on this forum, about the Z06, and the brand new rating system...No? I could be mistaken, however this IS where I go for my auto-related info!
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Joined: Jan 2002
Posts: 284
From: Van Nuys, Ca.
Re: Revised SAE hp/tq ratings
Here ya' go.
GM Is First To Certify Horsepower and Torque Under New SAE Test Procedure
Corvette Z06 now rated at 505 horsepower
Detroit - General Motors has become the first manufacturer to certify its horsepower and torque rating using the new Society of Automotive Engineers (SAE) test procedure J2723. The 7.0L LS7 engine for the 2006 Corvette Z06 is the first to be certified under the new test procedure at 505 horsepower @ 6300 rpm and 470 lb-ft @ 4800 rpm.
"The new voluntary SAE power and torque certification procedure ensures fair, accurate ratings for horsepower and torque as it uses third-party certification," said Jim Queen, GM vice president, global engineering and the general chair for the 2005 SAE World Congress. "SAE technical standards level the playing field and this certification procedure is just the latest example of the value SAE has offered over the past century."
"We're very proud to be the first to certify engines with the new procedure and pleased with the LS7 certification results," said Tom Stephens, group vice president of GM Powertrain. "Going forward, GM will certify its engines to the new procedure as we want customers to have accurate information when they make a purchase decision. GM encourages all manufacturers to do the same."
General Motors Corp. (NYSE: GM), the world's largest automaker, has been the global industry sales leader since 1931. Founded in 1908, GM today employs about 324,000 people around the world. It has manufacturing operations in 32 countries and its vehicles are sold in 200 countries. In 2004, GM sold nearly 9 million cars and trucks globally, up 4 percent and the second-highest total in the company's history. GM's global headquarters are at the GM Renaissance Center in Detroit. More information on GM can be found at www.gm.com.
Corvette Z06 now rated at 505 horsepower
Detroit - General Motors has become the first manufacturer to certify its horsepower and torque rating using the new Society of Automotive Engineers (SAE) test procedure J2723. The 7.0L LS7 engine for the 2006 Corvette Z06 is the first to be certified under the new test procedure at 505 horsepower @ 6300 rpm and 470 lb-ft @ 4800 rpm.
"The new voluntary SAE power and torque certification procedure ensures fair, accurate ratings for horsepower and torque as it uses third-party certification," said Jim Queen, GM vice president, global engineering and the general chair for the 2005 SAE World Congress. "SAE technical standards level the playing field and this certification procedure is just the latest example of the value SAE has offered over the past century."
"We're very proud to be the first to certify engines with the new procedure and pleased with the LS7 certification results," said Tom Stephens, group vice president of GM Powertrain. "Going forward, GM will certify its engines to the new procedure as we want customers to have accurate information when they make a purchase decision. GM encourages all manufacturers to do the same."
General Motors Corp. (NYSE: GM), the world's largest automaker, has been the global industry sales leader since 1931. Founded in 1908, GM today employs about 324,000 people around the world. It has manufacturing operations in 32 countries and its vehicles are sold in 200 countries. In 2004, GM sold nearly 9 million cars and trucks globally, up 4 percent and the second-highest total in the company's history. GM's global headquarters are at the GM Renaissance Center in Detroit. More information on GM can be found at www.gm.com.
