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Old 03-21-2009, 12:29 PM   #29
Chocolate Apocalypse
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Why shouldnt it be 5%? lol
15 is pretty much the standard when you're talking manual RWD transmissions. I've owned 2 T56 LS1 Camaros and while they were rated at 305 from the factory ('98-'00), could easily make 280+ rwhp on a dynojet. That didnt mean the drivetrain loss was crazy low, just that the F-Bod LS1s were underrated. Looks to me like the LS3 in the 5th Gen is right on the money rated at 426hp.
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Old 03-21-2009, 12:54 PM   #30
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Every car is different. Every dyno is different (+,- some ponies).
The car may need more miles (hp numbers usually increase with some miles on the car).
This dyno doesn't read "high numbers" like many other dynoes.


Time will tell. We will need to see more cars dynoed on many different dynoes to get a true picture.

And the numbers are definately not bad 380 lb ft of torque (stock).
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Old 03-21-2009, 01:08 PM   #31
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Quote:
Originally Posted by SGOS252382 View Post
Every car is different. Every dyno is different (+,- some ponies).
The car may need more miles (hp numbers usually increase with some miles on the car).
This dyno doesn't read "high numbers" like many other dynoes.


Time will tell. We will need to see more cars dynoed on many different dynoes to get a true picture.

And the numbers are definately not bad 380 lb ft of torque (stock).
+1. Dyno's are a tuning tool, the only real guage of a cars performance is at the track. Without other dyno's to compare it to, the numbers are irrelevant. If the numbers do turn out to be the average, I would say it has more to do with the air box/baffles than anything else.
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Old 03-21-2009, 01:12 PM   #32
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Old 03-21-2009, 01:18 PM   #33
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Also, this is 1 car on 1 dyno on 1 day. Do all corvettes on every dyno make 385 hp? No. Some do, some don't. Also, Corvettes are said to have lower drive losses, so a 436 hp Corvette @ 12% loss = 384 whp. A 426 hp Camaro @ 15% loss = 362 whp.
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Old 03-21-2009, 01:36 PM   #34
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Originally Posted by UCF w00t View Post
Who knows how the hell they got a car to dyno but it pulled 364hp and 371 lb/ft of torque at the wheels.



Thoughts?

LS3 or L99?

If it's LS3, it does not compare favorably to the hemi 6.1, which gets about 380hp to the wheels with the 6spd.

If it's L99, that is an excellent number.

edit: never mind:

So the net hp is less than the 6.1 Challenger by about 20-25. About 30hp better than the 5.7 Challenger.

Wish there were a way to test the amount of loss through the drivetrain.

1) Either Chevy's numbers are overstated for crank hp
2) Or Dodge's numbers are understated
3) Or there is a large difference in driveline loss between the two cars. (doubt it since it's an identical trans...)

Very very interesting results.
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Old 03-21-2009, 01:47 PM   #35
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Sooo, 425 is a flywheel number I take it?



Whatever, will still make Mustang cry

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Old 03-21-2009, 01:51 PM   #36
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What did the LS2 GTO put down stock?
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Old 03-21-2009, 01:55 PM   #37
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Originally Posted by kunkelz28 View Post
What did the LS2 GTO put down stock?
did the ls2 have the t6060 or the t56?

Just noticed this is on a dynojet. No correction factor was posted.

I would take these numbers with a grain of salt.
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Old 03-21-2009, 01:58 PM   #38
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I've seen dynojet dyno's range +/- 20hp. you really need to thier numbers on other cars on the SAME dyno.

Sky is not falling yet, LOL

-bobby
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Old 03-21-2009, 02:00 PM   #39
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I have a 04 GTO and i pretty sure it has the t6060
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Old 03-21-2009, 02:04 PM   #40
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same dyno, the G8 GXP made 351.
Camaro makes 13hp more, thats seems right to me, I think the g8 makes 415 from gm no?

just checked things, ya 415 from GM, 11 diff. looks like camaro did even better..

-bobby

65355 says the below which I kind of agree with.
I'm thinking intake/exhaust bottleneck OR which I fear..........driveline lose maybe due to the irs design?

Wish there were a way to test the amount of loss through the drivetrain.

1) Either Chevy's numbers are overstated for crank hp
2) Or Dodge's numbers are understated
3) Or there is a large difference in driveline loss between the two cars. (doubt it since it's an identical trans...)
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Old 03-21-2009, 02:12 PM   #41
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seems kinda weak. Only time will tell.
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Old 03-21-2009, 02:23 PM   #42
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Just to clear some things up.

The car is a manual trans LS3 with roughy 1,000 miles. The correction factor used was SAE.

We have been told in the past that our Dyno Jet is somewhat conservative, but we have it calibrated at least twice a year. For reference, a stock LS7 Z06 and stock Shelby GT-500 makes 440 RWHP, a stock LS2 manual trans vette makes about 340 RWHP.

Hope this helps.

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