Rwhp through A6?
Le Mans Master
Joined: Oct 2012
Posts: 8,434
Likes: 411
From: Texas
My stock '08 LS3 manual only did 372 rwhp stock.
Those numbers quoted above seem high to me.
Does the dry sump on the C6GS reduce crank oil parasitic loss or something that increases hp? If yes, how much?
Those numbers quoted above seem high to me.
Does the dry sump on the C6GS reduce crank oil parasitic loss or something that increases hp? If yes, how much?
Racer
Joined: Dec 2015
Posts: 488
Likes: 59
From: New Melle, Missouri
2018 C6 of Year Finalist
Well keep in mind everything is relative, not all dynos are the same, corrections are not all the same, and even stock tune / miles on engine, ECM OS version, etc have a factor. This is why its "general" for sure.
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
I've been on 4 different dynos in the last 8 years. My first dyno pull showed 306 stock and then tuned to 320. My last one was 394. The highest was 411 and the other one peaked at 386.
My 1/4 mile times went from a best 12.41 stock to 10.80 modded.
The only number that you can trust that has controls for repeatability are the industry standards used on engine dynos. However, they generally advertise round numbers that occur at 100 RPM intervals.
Dynos are a tuning tool. The only result that means anything is the difference between the first and last pull of the same session.
If all you want is a sheet to put on your dash at car shows, it's a lot cheaper to download one with the HP you like and photoshop in your name.
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Drifting
Joined: May 2012
Posts: 1,623
Likes: 51
From: Gastonia North Carolina
I've been on 4 different dynos in the last 8 years. My first dyno pull showed 306 stock and then tuned to 320. My last one was 394. The highest was 411 and the other one peaked at 386.
My 1/4 mile times went from a best 12.41 stock to 10.80 modded.
The only number that you can trust that has controls for repeatability are the industry standards used on engine dynos. However, they generally advertise round numbers that occur at 100 RPM intervals.
Dynos are a tuning tool. The only result that means anything is the difference between the first and last pull of the same session.
If all you want is a sheet to put on your dash at car shows, it's a lot cheaper to download one with the HP you like and photoshop in your name.
Spot on and love the last bold statement!
My LS2 A6 car put down 420/427 on a Vengence dyno, no modifications and went to PCMofNC and put down 400/400.
The funny part is it felt better after Alvin tuned the car!
Last edited by z06scentair; Nov 6, 2016 at 05:15 PM.
Burning Brakes
Joined: Jul 2014
Posts: 757
Likes: 47
From: Tracy CA
Id say 350-370 should be the norm for ls3 through an a6. And of course there are cars that dyno on either end of those numbers. Don't get too caught up in the end hp numbers. I was kinda bummed when my car only dyno'd 417whp after spending a bunch of money coming up from 408whp. But once I saw the new 10.7x timeslip from the old 11.3x with all other factors essentially the same I stopped caring about the horsepower number.
Burning Brakes
Joined: Aug 2010
Posts: 1,222
Likes: 52
From: Honolulu Hawaii
Dynoed bone stock through an A6@376rwhp sae corrected back then.goin back this sat. to redyno for a base line pull before I install my A&A kit.usual bolt ons-intake,long tube headers no cats,borla stingers catback and a stage2 blower cam from Arun@CCP.
Race Director
Joined: Mar 2011
Posts: 13,262
Likes: 3,151
From: SW Florida
2021 C6 of the Year Finalist - Modified
The C6 with the A6 transmission will lose 15% HP through the drivetrain:
Advertised 436 SAE Net HP - 15% = 371 RWHP corrected (DynoJet)
____________________________
BTW ... The M6 will lose 13% HP through the drivetrain
Advertised 436 SAE Net HP - 15% = 371 RWHP corrected (DynoJet)
____________________________
BTW ... The M6 will lose 13% HP through the drivetrain
Melting Slicks
Joined: Jan 2002
Posts: 2,132
Likes: 71
From: SOUTH SHORE Massachusetts
My 2008 A6 did 376 and 378, I have not done my 2012. But from what I can remember back then...that was the average for automatics, the stick cars did better but not by too much
CF Community Team
Joined: Apr 2016
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From: Pittsburgh
2025 C6 of the Year Finalist - Unmodified
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2021 C6 of the Year Finalist - Unmodified
Race Director
Joined: Mar 2011
Posts: 13,262
Likes: 3,151
From: SW Florida
2021 C6 of the Year Finalist - Modified