C7 vs C6 dyno comparison
Thread Starter
Instructor
Joined: Mar 2006
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From: Orlando FL
C7 vs C6 dyno comparison
I scaled and overlayed my 2009 C6 LS3 dyno graph that was done at Superchips over the C7 one shown today by Lingenfelter. My car was stock with the NPP at the time of the dyno run using 93 octane.
Dyno comparisons across vehicles are never scientific but it's a rough idea for comparison.
Dyno comparisons across vehicles are never scientific but it's a rough idea for comparison.
Le Mans Master
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From: Austin Texas
The torque graph shows the C7 above the C6 all the way,
BUT
the HP graph shows the C7 under the C6 until 65 MPH,
Thus somebody screwed up one of the axes; it can't work that way.
HP[rpm] = TQ[rpm]*rpm/5252
BUT
the HP graph shows the C7 under the C6 until 65 MPH,
Thus somebody screwed up one of the axes; it can't work that way.
HP[rpm] = TQ[rpm]*rpm/5252
Instructor
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Agreed. If the torque graph is right though, that's a pretty nice improvement.
Le Mans Master
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Here's one from my stock 2013 GS that is scaled to match:
Last edited by EvanZR1; Sep 25, 2013 at 02:36 PM.
Le Mans Master
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I did the C6 in red, but it's still not the easiest to make out. The upper end is very similar, but the C7 has a big TQ/HP bump down low.
Last edited by EvanZR1; Sep 25, 2013 at 02:36 PM.
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Burning Brakes
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From: Paragould Arkansas
The C7 power increase over the C6 is minimal. Although the weight increase in the C7 is substantial when compared to a base C6. I am a corvette lover and I really like the C7, but the power could have been better.
Melting Slicks
Joined: Oct 2002
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From: Smithfield VA
Yeah I realized after I did it. That one's easy though, the C6 is the lower of the two. I also did one vs my C6 with just Z06 exhaust manifolds & H-pipe (stock tune & filter):
I did the C6 in red, but it's still not the easiest to make out. The upper end is very similar, but the C7 has a big TQ/HP bump down low.
I did the C6 in red, but it's still not the easiest to make out. The upper end is very similar, but the C7 has a big TQ/HP bump down low.
I would recommend taking your charts down since they will just confuse people.
Last edited by racerns; Sep 25, 2013 at 01:11 PM.
Le Mans Master
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From: Los Angeles
Especially since the graph is displayed in MPH instead of RPM.
Scraping the splitter.
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St. Jude Donor '13-'14-'15
You are comparing STD correction to SAE correction. This is not a valid comaprison. STD correction is always going to give you much higher numbers than SAE. You peak stock 401 hp STD = 382 hp SAE and your modded 414 hp STD = 395 hp SAE. You would see a much bigger difference in the graphs if you were comaparing apples to apples.
I would recommend taking your charts down since they will just confuse people.
I would recommend taking your charts down since they will just confuse people.
I 'thought' the difference when corrected to STD was about 2.6%, but either way, the LS3 is not making close to the same power as the LT1 stock vs. stock. Lingenfelter posted overlays of an LT1, LS3 and LS7 here...
http://forums.corvetteforum.com/1584989050-post54.html
Scaled the same, same smoothing, all SAE.
S.
Safety Car
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Good catch.
I 'thought' the difference when corrected to STD was about 2.6%, but either way, the LS3 is not making close to the same power as the LT1 stock vs. stock. Lingenfelter posted overlays of an LT1, LS3 and LS7 here...
http://forums.corvetteforum.com/1584989050-post54.html
Scaled the same, same smoothing, all SAE.
S.
I 'thought' the difference when corrected to STD was about 2.6%, but either way, the LS3 is not making close to the same power as the LT1 stock vs. stock. Lingenfelter posted overlays of an LT1, LS3 and LS7 here...
http://forums.corvetteforum.com/1584989050-post54.html
Scaled the same, same smoothing, all SAE.
S.
Le Mans Master
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2020 Corvette of the Year Finalist (performance mods)
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Stupid Dynojet software (I had it at SAE, not sure why it changed) I'll reset it to SAE and repost later.
Scraping the splitter.
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St. Jude Donor '13-'14-'15
Race Director
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Leveling to SAE won't make a ton of difference here. The numbers on the first graph are right where they should be for the respective engines. Peak power of 388 for the LS3 and 416 for the LT1.
Scraping the splitter.
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St. Jude Donor '13-'14-'15
Originally Posted by TTRotary
Leveling to SAE won't make a ton of difference here. The numbers on the first graph are right where they should be for the respective engines. Peak power of 388 for the LS3 and 416 for the LT1.
S.
Safety Car
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LT1 > LS3 by 31.1HP at peak
But you are right... if you look at the torque increase of the LT1 across the RPM range and the extra area under the HP curve vs. the LS3, the differences are meaningful... very meaningful. What impresses me most is the LS7 and LT1 graphs to 5,000RPM... effectively identical. After 5,000RPM, the LS7 walks away (and it weighs less) but until then, the LT1 is impressive!!
Last edited by gthal; Sep 25, 2013 at 02:22 PM.
Scraping the splitter.
Joined: Jun 2005
Posts: 8,111
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St. Jude Donor '13-'14-'15
LS7 > LT1 by 36.6HP at peak
LT1 > LS3 by 31.1HP at peak
But you are right... if you look at the torque increase of the LT1 across the RPM range and the extra area under the HP curve vs. the LS3, the differences are meaningful... very meaningful. What impresses me most is the LS7 and LT1 graphs to 5,000RPM... effectively identical.
LT1 > LS3 by 31.1HP at peak
But you are right... if you look at the torque increase of the LT1 across the RPM range and the extra area under the HP curve vs. the LS3, the differences are meaningful... very meaningful. What impresses me most is the LS7 and LT1 graphs to 5,000RPM... effectively identical.
S.
Last edited by Snorman; Sep 25, 2013 at 02:26 PM.