C7 Z51 Dyno'd by Edmunds
08-22-2013, 02:30 AM
#1
Racer
Thread Starter
C7 Z51 Dyno'd by Edmunds
Last edited by G35c6MT; 08-22-2013 at 02:34 AM.
08-22-2013, 02:58 AM
#2
Le Mans Master
Nice find. Thanks for posting.
Michael
Michael
08-22-2013, 03:01 AM
#3
Team Owner
Why compare the Ls-3 in the Camaro. 
The real story is the ls-3 is much closer than the comparo.
Looks like the Corvette Ls-3 just needs some light mods like headers to
hang with the C-7. Mine made 420plus with headers!
The real story is the ls-3 is much closer than the comparo.
Looks like the Corvette Ls-3 just needs some light mods like headers to
hang with the C-7. Mine made 420plus with headers!
Last edited by 3 Z06ZR1; 08-22-2013 at 04:18 AM.
08-22-2013, 03:07 AM
#6
Pretty sweet numbers. Car sounds great. They had it in track mode and you could hear the exhaust valves open. I wonder if that's what causes the jump in torque around 3800 RPM. Would be nice if you could do something to keep that higher level of torque in the lower RPM rangers as well.
Here's their dyno run:
And a comparison to the Camaro SS:
-T
Here's their dyno run:
And a comparison to the Camaro SS:
-T
08-22-2013, 03:18 AM
#7
Le Mans Master
nice #'s
08-22-2013, 03:33 AM
#9
Le Mans Master
08-22-2013, 04:25 AM
#10
Maybe, but would imagine the variable valve timing would be a steady transition over RPM range in order to keep the torque as constant and as high as possible. This reminds me more of V-tec, rather than a well controlled variable valve setup. You definitely could be right, though.
One other thing: it looks like this engine really needs some air at the top end. Compare with how flat the torque is on Edmunds test of the Ford Boss 302 motor:
I wonder if/when GM will have a set of hot cams for this engine.
-T
One other thing: it looks like this engine really needs some air at the top end. Compare with how flat the torque is on Edmunds test of the Ford Boss 302 motor:
I wonder if/when GM will have a set of hot cams for this engine.
-T
Last edited by Trackaholic; 08-22-2013 at 04:29 AM.
08-22-2013, 06:01 AM
#11
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Pretty sweet numbers. Car sounds great. They had it in track mode and you could hear the exhaust valves open. I wonder if that's what causes the jump in torque around 3800 RPM. Would be nice if you could do something to keep that higher level of torque in the lower RPM rangers as well.
Here's their dyno run:
And a comparison to the Camaro SS:
-T
Here's their dyno run:
And a comparison to the Camaro SS:
-T
The article said it was due to the exhaust valves. Can't wait for more results !
08-22-2013, 06:54 AM
#13
Le Mans Master
Nice numbers. The torque at low rpms is amazing.
08-22-2013, 07:32 AM
#14
Team Owner
13 percent has not been the number since GM started using the SAE certified system. Look at the thread a couple of weeks ago asking for guesses. I guessed 410 for that reason. My LS3 was just under 11 percent.
Last edited by jschindler; 08-22-2013 at 07:34 AM.
08-22-2013, 09:08 AM
#16
Team Owner
I guessed 405rwhp based on the 11.9% loss on my Z06..
But, as most of us understand, you cannot take a chassis dyno reading and then calculate the engine's horsepower from it. To many uncontrolled variables. The 460 horsepower is SAE certified, and a 472 horsepower guess at the flywheel derived from the rear wheel horsepower reading is a false belief.
Last edited by JoesC5; 08-22-2013 at 09:15 AM.
08-22-2013, 09:11 AM
#17
Banned Scam/Spammer
Those numbers are very close to what my LS3 did with long tubes and a mild tune. That car was a rocket. It will be interesting to see what the tuners can do with these new motors.
