A4 vs M6

Reply Subscribe

Thread Tools

Search this Thread

Jan 9, 2008 | 07:50 PM

NC98Z

Thread Starter

TECH Fanatic

iTrader: (1)

Joined: Sep 2003

Posts: 1,306

Likes: 0

A4 vs M6

If you took the same motor out of a M6 car after it dynoed and put it in a stalled A4 car how much loss would I see on its dyno? Same rear gears.

Jan 9, 2008 | 08:08 PM

MattIROC

TECH Resident

iTrader: (19)

Joined: Apr 2004

Posts: 790

Likes: 0

From: San Antonio, Tx

With the setup in your sig, I would guess 20-30 rwhp. Just a guess, maybe others can chime in.

Jan 10, 2008 | 02:21 AM

ExceSSive

12 Second Club

iTrader: (13)

Joined: Feb 2005

Posts: 1,575

Likes: 1

From: Gateway International Raceway

That is probably pretty close

Jan 10, 2008 | 02:25 AM

440 rwhp trans am

Teching In

iTrader: (3)

Joined: Jul 2007

Posts: 37

Likes: 0

From: houston

depends on the size stall. a guy i know had 430rwhp 390rwt and put a vig 3600 in it and got 403rwhp and 420rwt. and if ask me ill take the stalled option! torque wins races!!

Jan 10, 2008 | 02:56 AM

dab2pds

Staging Lane

Joined: Mar 2007

Posts: 72

Likes: 0

From: gpt,ms

since it is the exact same motor, the question should be who is quicker in the quarter. that is all that matters, right?
Dave

Jan 10, 2008 | 04:58 AM

junior28570

10 Second Club

iTrader: (22)

Joined: Feb 2006

Posts: 536

Likes: 0

From: coastal N.C.

A loss of about 20 to 30rwhp is about right and the loss in rwtq is even worse for an unlocked 3200/3600 stall, from what I've seen.

Jan 10, 2008 | 08:34 PM

LS1crazy01

12 Second Club

iTrader: (14)

Joined: Sep 2005

Posts: 1,193

Likes: 0

From: ILLINOIS

I believe that an M6 has 15% loss from flywheel hp to rwhp and a A4 is about18%.

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Verdad Gallardo

6 Common C5 Corvette Failures and What's Involved In Repairing Them

Pouria Savadkouei

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Verdad Gallardo

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Verdad Gallardo

10 Camaros You Should Never Buy

10 LS Engine Myths That Refuse to Die

Verdad Gallardo

Jan 11, 2008 | 10:46 AM

Midnight02

TECH Fanatic

iTrader: (8)

Joined: Feb 2007

Posts: 1,620

Likes: 6

From: Atlanta, GA

Quote:

Originally Posted by LS1crazy01

I believe that an M6 has 15% loss from flywheel hp to rwhp and a A4 is about18%.

.

While there are a number of variables and it's tough to pin an exact amount to one particular car, I think this is a pretty good estimate. I've always heard that there's roughly a 3-5% difference in the drivetrain loss between an A4 and a M6.

Jan 15, 2008 | 02:51 PM

#10

NC98Z

Thread Starter

TECH Fanatic

iTrader: (1)

Joined: Sep 2003

Posts: 1,306

Likes: 0

Thats about what I thought!

Quote:

Originally Posted by Midnight02

3-5% is about what I thought too. We were having one of our everybody know everything conferences at the local bar the other nite when this question came up. I also agree that a Dyno is a tuning tool and the only #s that really matter are thoses time slips. But until I get a reliable rearend in the Z28 I really don't want to turn her loose at the track yet. I actually was very happy with the dyno #s on my pulls though.

Attachment 116134

Last edited by NC98Z; Nov 12, 2010 at 01:15 PM.

Jan 15, 2008 | 03:56 PM

#11

02NBMWS6

10 Second Club

iTrader: (22)

Joined: Mar 2006

Posts: 1,366

Likes: 1

Quote:

Originally Posted by NC98Z

your car dyno'd the exact same as mine. My SS has a MS4, PRC 2.5s, and a 4000 stall. It made 417/385. I thought it was pretty low myself.. This changes my opinion. Guess im used to the M6 numbers

Jan 18, 2008 | 12:27 AM

#12

'Trust'

10 Second Club

iTrader: (24)

Joined: Aug 2004

Posts: 7,972

Likes: 4

From: Eternity

Quote:

Originally Posted by 02NBMWS6

your car dyno'd the exact same as mine. My SS has a MS4, PRC 2.5s, and a 4000 stall. It made 417/385. I thought it was pretty low myself.. This changes my opinion. Guess im used to the M6 numbers

It looks like we are all in the same ball park H/C, mine did 431/382 with a 238/242 cam, less lift than an MS4 though. I was disappointed as well, but I think I was looking at it with M6 expectations.

Jan 18, 2008 | 09:10 AM

#13

PewterScreaminMach

TECH Addict

iTrader: (7)

Joined: Sep 2006

Posts: 2,628

Likes: 2

From: Austin, TX

20-30rw, give or take sounds accurate for what I've seen on these threads. Lots of variables, though.

Jan 19, 2008 | 02:21 AM

#14

dab2pds

Staging Lane

Joined: Mar 2007

Posts: 72

Likes: 0

From: gpt,ms

i did 416/360 with a 232/234 cam thru a 3600 vigilante. wasn't disappointed so much with the number as the fact that there was really nothing to be picked up on wot from my mail order tune, it was dead nuts on the wot. guess i can't complain as i'm miling 120, i'll just have to add a little juice

Dave

Jan 19, 2008 | 02:47 AM

#15

corvetteandsilverado

TECH Regular

iTrader: (3)

Joined: Jun 2007

Posts: 442

Likes: 0

From: Lincoln, DE

i always thought that with a stall you dyno less horsepower then if you didn't add the stall in a A4.. i have a stock 2001 C5 corvette coupe with B&B bullets volant CAI and i made 309/320 and my buddy with a 02 SS SLP M6 made 326/330 with TSP true duals. and from what ive seen and read there is a big dyno number difference between a mustange dyno and a dynojet