*Official* L99 Dyno Thread - Page 11 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Whorable MPG1975 · 07-09-2010, 08:35 AM

Quote:

what is the best way to Dyno a L/99 Tap shift on 4th gear or automatic 6th?
thanks

4th of course, or whatever is closest to 1:1 driveline ratio.

Isn't this one of the reasons the L99's read a bit lower than the LS3's when on the rollers? The M6 has a true 1:1 ratio 4th but the A6 is like a 1.12:1 (can't remember) so it reads a little lower than than the manual cars regardless of the mods (that, and there is of course more driveline loss through the automatic).

Saw an article where they did some cam swaps and the L99 was besting the LS3's down in the low and mid range on torque. It would be nice to see a comparison of the two motors on an engine dyno with the same mods (cam, headers and even FI). Oh well, can't wait to pick mine up once I get back to the states.

Way jealous of you guys!

Chuckyx1 · 07-12-2010, 08:55 PM

535 whp Jannetty tuned

kaler · 08-01-2010, 06:11 PM

HP 365
TQ 372

Kook LT
CAI.inc
JRE 91octane Mail order tune..Thanks Ted 350 + ft-lbs from 3k to 5.5k
How does the AFR look to you guys?

Alec · 08-01-2010, 06:15 PM

^^^Looks pretty lean

94guy · 08-01-2010, 06:24 PM

yea too lean.

kaler · 08-01-2010, 07:16 PM

Thats what I thought also,thanks guys.

cybercoaster · 08-01-2010, 09:01 PM

I never posted mine. Matches some and lower then others. What would a LS3 get with my same mods (see sig) this is with a dyno tune? I didnt get a baseline before my mods. Seems like more then what I thought is lost through the powertrain. What would this HP rating be at the flywheel?

StlRomAniaN · 08-01-2010, 11:02 PM

That's very low. An LS3 would be putting out close to ~410 rwhp. L99's usually get around 375 rwhp with 385 being the highest I've seen. Torque should be around 10 higher than your hp.

cybercoaster · 08-02-2010, 10:30 AM

Think it was the guy that tuned it or something else wrong?

StlRomAniaN · 08-02-2010, 05:17 PM

Could be a number of things: Weather conditions, tuner (air fuel ratio could be off), and/or the dyno (some read low).

cybercoaster · 08-02-2010, 05:30 PM

He did say his dyno reads a little low, I wouldnt think that low. I been looking for what a L99 dynos at stock. I expected 400hp to read about this with no mods are rear wheel. As soon as it cools off, going to have someone else dyno for me.

StlRomAniaN · 08-02-2010, 05:34 PM

Quote:

Originally Posted by cybercoaster

He did say his dyno reads a little low, I wouldnt think that low. I been looking for what a L99 dynos at stock. I expected 400hp to read about this with no mods are rear wheel. As soon as it cools off, going to have someone else dyno for me.

I've seen a L99 dyno as high as 345 rwhp and 360 rwtq stock. It was Jannetty, I believe. But, this was after about 6-8 pulls. Something most of us can't really afford. lol

fieldgoal00 · 08-02-2010, 05:38 PM

Just with a Vararam intake w/ no tune on my wife's LS3 it put down 386whp/389tq

SGOS252382 · 08-02-2010, 05:53 PM

Quote:

Originally Posted by StlRomAniaN

I've seen a L99 dyno as high as 345 rwhp and 360 rwtq stock. It was Jannetty, I believe. But, this was after about 6-8 pulls. Something most of us can't really afford. lol

Jannetty's dyno consistantly produces good stock numbers (LS3s and L99s).

Some dynos are not so generous. We have two local dynos and L99s only make around 315 - 320 rwhp (stock). I've even seen some lower that that.

But these are strong running L99s. One L99 that made 318 rwhp ran 13.3 @ 106 mph in summer heat. Corrected it would have run 13.1 @ 108 mph.

So you really need to look at each dyno individually. And like I always say, the track is the real test.

07-12-2010, 08:55 PM	#142
Chuckyx1 Drives: 2011 Fasties Maxies Join Date: Jun 2010 Location: Fishkill, NY Posts: 116	L99 535 whp Jannetty tuned __________________

08-01-2010, 09:01 PM	#147
cybercoaster Drives: 2017 2SS 50th Anv, 1972 RS Join Date: Mar 2009 Location: Oklahoma City Posts: 1,588 View My Garage	I never posted mine. Matches some and lower then others. What would a LS3 get with my same mods (see sig) this is with a dyno tune? I didnt get a baseline before my mods. Seems like more then what I thought is lost through the powertrain. What would this HP rating be at the flywheel? Attached Images

08-01-2010, 11:02 PM	#148
StlRomAniaN Drives: IOM 2010 Camaro 2SS/RS Join Date: Mar 2009 Location: St. Louis Posts: 1,782 View My Garage	That's very low. An LS3 would be putting out close to ~410 rwhp. L99's usually get around 375 rwhp with 385 being the highest I've seen. Torque should be around 10 higher than your hp. __________________

08-02-2010, 05:17 PM	#150
StlRomAniaN Drives: IOM 2010 Camaro 2SS/RS Join Date: Mar 2009 Location: St. Louis Posts: 1,782 View My Garage	Could be a number of things: Weather conditions, tuner (air fuel ratio could be off), and/or the dyno (some read low). __________________

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08-01-2010, 06:11 PM	#143
kaler Drives: 2011 Dodge 3500 dually Mega Cab Join Date: Jul 2009 Location: discovery bay,ca Posts: 667	HP 365 TQ 372 Kook LT CAI.inc JRE 91octane Mail order tune..Thanks Ted 350 + ft-lbs from 3k to 5.5k How does the AFR look to you guys?

08-01-2010, 06:15 PM	#144
Alec Account Suspended Drives: Toyota Supra Turbo Join Date: Mar 2010 Location: Illinois Posts: 27	^^^Looks pretty lean

08-01-2010, 06:24 PM	#145
94guy Drives: 99 Camaro; 2010 Camaro 2SS/RS Join Date: Nov 2009 Location: louisiana Posts: 1,967	yea too lean.

08-01-2010, 07:16 PM	#146
kaler Drives: 2011 Dodge 3500 dually Mega Cab Join Date: Jul 2009 Location: discovery bay,ca Posts: 667	Thats what I thought also,thanks guys.

08-02-2010, 10:30 AM	#149
cybercoaster Drives: 2017 2SS 50th Anv, 1972 RS Join Date: Mar 2009 Location: Oklahoma City Posts: 1,588 View My Garage	Think it was the guy that tuned it or something else wrong?

08-02-2010, 05:30 PM	#151
cybercoaster Drives: 2017 2SS 50th Anv, 1972 RS Join Date: Mar 2009 Location: Oklahoma City Posts: 1,588 View My Garage	He did say his dyno reads a little low, I wouldnt think that low. I been looking for what a L99 dynos at stock. I expected 400hp to read about this with no mods are rear wheel. As soon as it cools off, going to have someone else dyno for me.

08-02-2010, 05:38 PM	#153
fieldgoal00 Account Suspended Drives: 2010 Chevy Camaro 2SS/RS Join Date: Dec 2008 Location: New Orleans Posts: 769	Just with a Vararam intake w/ no tune on my wife's LS3 it put down 386whp/389tq