My dyno results for a stock LS3...discuss - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Huggerorange73 · 03-31-2010, 08:41 AM

Okay, so I drove down the Straightline Performance to get a baseline dyno pull. I pulled the Roto-Fab CAI induction off the car for the pull. Once I got home, I put it back on along with the SLP LM II.

Are these numbers out of line? Seems that alot of people think there results are "off".

ULTRAZLS1 · 03-31-2010, 10:14 AM

Dont I know you from ls1tech?

Probably just differences in dyno. But that is a solid pull especially for a mustang dyno. The most common number for the new camaro is 36x to 37x. I have seen some 38x and 39x but those are usually dynapack or dynojet dynos. I havent seen a mustang dyno read out as high as yours for a stock car yet.

One possibility is that your car may have slightly adjusted its computer for when you had the rotofab on...and then when you took it off and went to the dyno it could have still been running different parameters and effected the numbers.

See if you can get another 6 speed car to pull on the same day as you and see what happens.

Also...doesnt your car have a couple thousand miles on it? A lot of motors are known to pick up about 10-15 hp after break in...this could be part of the equation also. A lot of dynos I have seen around here are on cars with less than 500 miles on them.

Meister@Torq · 03-31-2010, 10:20 AM

I think the HP@50 number is a bit on the low side. I would have them use something like 13.5-13.75, which is a pretty good guess and this will change the numbers some.

J-Rod6410 · 03-31-2010, 10:22 AM

Your dyno graph reads out at 369 max horsepower.

Your text on the sheet reads 391 max horsepower.

There is a misprint somewhere. 369 sounds perfect for this dyno.

Huggerorange73 · 03-31-2010, 10:59 AM

Quote:

Originally Posted by ULTRAZLS1

Dont I know you from ls1tech?

Probably just differences in dyno. But that is a solid pull especially for a mustang dyno. The most common number for the new camaro is 36x to 37x. I have seen some 38x and 39x but those are usually dynapack or dynojet dynos. I havent seen a mustang dyno read out as high as yours for a stock car yet.

One possibility is that your car may have slightly adjusted its computer for when you had the rotofab on...and then when you took it off and went to the dyno it could have still been running different parameters and effected the numbers.

See if you can get another 6 speed car to pull on the same day as you and see what happens.

Also...doesnt your car have a couple thousand miles on it? A lot of motors are known to pick up about 10-15 hp after break in...this could be part of the equation also. A lot of dynos I have seen around here are on cars with less than 500 miles on them.

Yup, I'm on tech as well....All of your logic sounds reasonable to me. Car does have over 2K on it.

Quote:

Originally Posted by Meister@Torq

I think the HP@50 number is a bit on the low side. I would have them use something like 13.5-13.75, which is a pretty good guess and this will change the numbers some.

I'll relay the message, thanks!

Quote:

Originally Posted by jrrod6410

Your dyno graph reads out at 369 max horsepower.

Your text on the sheet reads 391 max horsepower.

There is a misprint somewhere. 369 sounds perfect for this dyno.

Good catch...how the hell did I miss that?!?!

v6sonoma · 03-31-2010, 11:44 AM

I think the numbers on the lower sheet are the adjusted ones. I would say thats about what most ls3's put out stock.

4xchamp · 03-31-2010, 07:07 PM

Here's mine on the mustang dyno .
Higher #s were with the airbox open , air filter only ( taped to housing )

Huggerorange73 · 04-01-2010, 01:57 PM

Okay, I have confirmed that the dyno was in fact accurate...several other cars went on after mine that day with nuts on readings.

With regards to the graph results off from the cover sheet...the cover sheet is usually always a little higher because it uses SAE standards for correction, where as the graph uses raw data.

MadMav · 04-01-2010, 10:31 PM

Sorry, but the bottom graph is the accurate numbers. No stock LS3 makes 390hp to the wheels. Yours is 369hp/359tq.

Mav

DaveT · 04-01-2010, 10:44 PM

Same that mine laid down stock.

RBC2010SSRS · 04-02-2010, 01:06 AM

Here is slighltly more than stock DYNO results.... Lots of ppl say they are no good bc they are STD readings....

g-townmach · 04-02-2010, 07:05 AM

Mustang dynos always produce lower #'s than a dynojet.

They are just #'s. A dyno is just a tuning tool... How does your car FEEL??

Jason L · 04-02-2010, 02:24 PM

There is our's stock. I like to tell people not to get too wrapped up in numbers, it only show's what the car makes that day. Most of the time its pretty accurate but a dyno is just a tool.

Slowhawk · 04-02-2010, 04:03 PM

Your #'s look right for the Mustang dyno.The power@50 is close and wouldn't change the output. By the graph I see KR which is typical on these cars.

03-31-2010, 08:41 AM	#1
Huggerorange73 Banned Drives: The REAL C5 Join Date: Nov 2007 Location: Norridge, IL Posts: 1,830	My dyno results for a stock LS3...discuss Okay, so I drove down the Straightline Performance to get a baseline dyno pull. I pulled the Roto-Fab CAI induction off the car for the pull. Once I got home, I put it back on along with the SLP LM II. Are these numbers out of line? Seems that alot of people think there results are "off".

03-31-2010, 10:14 AM	#2
ULTRAZLS1 Drives: 14 Silverado LTZ Z71, 16 Camaro SS Join Date: Nov 2009 Location: Jackson, Michigan Posts: 4,407	Dont I know you from ls1tech? Probably just differences in dyno. But that is a solid pull especially for a mustang dyno. The most common number for the new camaro is 36x to 37x. I have seen some 38x and 39x but those are usually dynapack or dynojet dynos. I havent seen a mustang dyno read out as high as yours for a stock car yet. One possibility is that your car may have slightly adjusted its computer for when you had the rotofab on...and then when you took it off and went to the dyno it could have still been running different parameters and effected the numbers. See if you can get another 6 speed car to pull on the same day as you and see what happens. Also...doesnt your car have a couple thousand miles on it? A lot of motors are known to pick up about 10-15 hp after break in...this could be part of the equation also. A lot of dynos I have seen around here are on cars with less than 500 miles on them. Last edited by ULTRAZLS1; 03-31-2010 at 10:25 AM.

03-31-2010, 10:22 AM	#4
J-Rod6410 M6 9 second club Drives: A 4000 Lb BeaSSt Join Date: Jul 2009 Location: Crackin Azz on a hi-way near you Posts: 1,033 View My Garage	Your dyno graph reads out at 369 max horsepower. Your text on the sheet reads 391 max horsepower. There is a misprint somewhere. 369 sounds perfect for this dyno. __________________ TEAM LS3 Best pass: 9.61 @ 146 with M6 TBDRWHP TBDRWTQ ECS S/C 408, YSi, m6, Mantic Triple, ZL1 diff #BuiltByJRod.... J-Rod's Speed Shop.... Tuned by: Matt Sorian @ MS Tuning Check out my youtube channel: http://www.youtube.com/user/6410Jrod Follow me on Instagram: @J_Rod6410

03-31-2010, 11:44 AM	#6
v6sonoma Drives: 2010 SS RS Join Date: Jun 2009 Location: Providence, RI Posts: 8,108 View My Garage	I think the numbers on the lower sheet are the adjusted ones. I would say thats about what most ls3's put out stock. __________________ Mods: BBK Intake, BBK LT's and High Flow Cats, Corsa Cat-back exhaust, Hurst short throw shifter, SLP skip-shift eliminator. 7/1/09 Placed order for IOM/IO int/ SS/RS 6M 9/26/09 Took delivery!

03-31-2010, 07:07 PM	#7
4xchamp MURC 666 Drives: 69 Pace Car 68 Camaro Restomod 81 Z Join Date: Jan 2010 Location: New England , U.S.A. Posts: 480	Here's mine on the mustang dyno . Higher #s were with the airbox open , air filter only ( taped to housing ) Attached Images __________________ Guys hoarding their Camaros are depriving some youngster the opportunity to restore it 25 years from now . Drive it like you stole it , let the next guy baby it !

03-31-2010, 10:20 AM	#3
Meister@Torq Drives: 2001 Crown Vic Join Date: Oct 2009 Location: Miami Posts: 974	I think the HP@50 number is a bit on the low side. I would have them use something like 13.5-13.75, which is a pretty good guess and this will change the numbers some.

04-01-2010, 01:57 PM	#8
Huggerorange73 Banned Drives: The REAL C5 Join Date: Nov 2007 Location: Norridge, IL Posts: 1,830	Okay, I have confirmed that the dyno was in fact accurate...several other cars went on after mine that day with nuts on readings. With regards to the graph results off from the cover sheet...the cover sheet is usually always a little higher because it uses SAE standards for correction, where as the graph uses raw data.

04-01-2010, 10:31 PM	#9
MadMav Drives: 2010 SS/RS M6 Join Date: Nov 2009 Location: Falcon, CO Posts: 661	Sorry, but the bottom graph is the accurate numbers. No stock LS3 makes 390hp to the wheels. Yours is 369hp/359tq. Mav __________________ SS/RS M6, SIM, CGM stripes, Barton S/T, BMR trailing arms, ADM Race intake(no scoop), Texas Speed 1 7/8" headers and full 3" exhaust, RMCR custom tune.

04-01-2010, 10:44 PM	#10
DaveT Drives: 2010 2SS CGM LS3 Join Date: Jan 2010 Location: SF Bay Area Posts: 236	Same that mine laid down stock.

04-02-2010, 01:06 AM	#11
RBC2010SSRS Drives: 2010 SS RS 6spd. 402 rwhp Join Date: Nov 2009 Location: Ft Worth TX Posts: 70	Here is slighltly more than stock DYNO results.... Lots of ppl say they are no good bc they are STD readings.... __________________ LS3 dreamin

04-02-2010, 07:05 AM	#12
g-townmach I FARTED Drives: 2010 2SS/RS Join Date: Nov 2009 Location: cen-tex Posts: 870	Mustang dynos always produce lower #'s than a dynojet. They are just #'s. A dyno is just a tuning tool... How does your car FEEL?? __________________

04-02-2010, 02:24 PM	#13
Jason L Drives: 2004 Pontiac GTO Join Date: Feb 2010 Location: Tempe AZ Posts: 65	There is our's stock. I like to tell people not to get too wrapped up in numbers, it only show's what the car makes that day. Most of the time its pretty accurate but a dyno is just a tool.

04-02-2010, 04:03 PM	#14
Slowhawk Drives: 1999 Trans Am Join Date: Jul 2009 Location: Bridgewater,Ma Posts: 2,017	Your #'s look right for the Mustang dyno.The power@50 is close and wouldn't change the output. By the graph I see KR which is typical on these cars.

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