Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
TireRack
Go Back   Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com > Engine | Drivetrain | Powertrain Technical Discussions > Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons


Reply
 
Thread Tools
Old 10-08-2013, 06:52 PM   #15
LS3 SS


 
LS3 SS's Avatar
 
Drives: 2010 Cyber Grey Camaro SS (LS3)
Join Date: Mar 2010
Location: Clarksville TN
Posts: 2,275
Quote:
Originally Posted by litle88 View Post
Then you are clueless sir, a mustang dyno gets its results by two constants for the dyno’s algorithms. One being the vehicle weight, the other being what’s called “Horsepower At 50mph”. This is a number that represents how much horsepower it takes for the vehicle to push the air to maintain 50mph. This is used as the aerodynamic force. Mustang dyno’s are also equipped with a eddy currant load cell. Think of a magnetic brake from a freight train. This magnetic brake can apply enough resistance to stall a big rig. Off one side of the eddy currant load cell, there is a cantilever with a 5volt reference load sensor (strain gage). As the rollers are spinning this load sensor is measuring the actual torque being applied. So as the rollers spin, the load sensor is measuring the force being applied, sending that information to the dyno computer, taking into account the two constants entered earlier, computing the amount of resistance needed to be applied to the rollers to load the car so that the force of the rollers resistance is as close to the force the car sees on the street. The dyno is then able to calculate the total force being applied to the rollers in torque, and then taking the derivative of that torque curve to arrive at the horsepower curve. Since torque is an actual force of nature, like gravity and electricity, it can be directly measured. Horsepower is an idea that was thought up by man, and cannot be directly measured, only calculated.


LOL that's what I just did to my brain.
__________________
GPI SS3 Cam / PRC 255 heads / Forged 376ci bottom / Fore level 2 fuel system / D1SC ProCharger on 12lbs / Alky control dual nozzle / 770 whp / 649 wtq tuned by Ryan Stevens at GPI
LS3 SS is offline   Reply With Quote
Old 10-08-2013, 07:32 PM   #16
Steve@SNL/Monster Clutch
Account Suspended
 
Drives: 2014 SS
Join Date: Jan 2011
Location: Haslet, TX
Posts: 744
I'm not sure if that C6 was tuned or not, but they seam to have a more generous dyno based on what I've seen with C7 baselines...
http://forums.corvetteforum.com/c7-t...mes-begin.html
Steve@SNL/Monster Clutch is offline   Reply With Quote
Old 10-08-2013, 07:56 PM   #17
toNspahreP
Account Suspended
 
Drives: SS
Join Date: Aug 2013
Location: jawja
Posts: 128
Grand sport dry sump is worth 15hp on its own
toNspahreP is offline   Reply With Quote
Old 10-08-2013, 07:59 PM   #18
litle88
V8 Lounge member #2
 
litle88's Avatar
 
Drives: 2001 Ws6
Join Date: Sep 2009
Location: Burbank,IL
Posts: 6,373
Quote:
Originally Posted by LS3 SS View Post


LOL that's what I just did to my brain.
Sorry sir.
__________________
2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
litle88 is offline   Reply With Quote
Old 10-08-2013, 08:11 PM   #19
Quick

 
Quick's Avatar
 
Drives: 2012 Camaro SS 45th
Join Date: Oct 2011
Location: Union City,Tn.
Posts: 858
I thought Chevy used an engine dyno to get their numbers...hence flywheel hp.
__________________
OBX 1 7/8 LT's w/high flow cats. Doug Thorley catback w/x pipe. Cold air intake by CAI w/apex scoop.V-max ported throttle body.DynoSpeed tuned by Forest.369 rwhp/385 rwtq

Something wicked this way cometh...
Quick is offline   Reply With Quote
Old 10-09-2013, 11:01 AM   #20
3rdgen3
10-bolt Destroyer
 
3rdgen3's Avatar
 
Drives: 2012 Camaro 2SS/RS - AGM, LS3/6M
Join Date: Jun 2012
Location: Canukistan
Posts: 860
Quote:
Originally Posted by litle88 View Post
Then you are clueless sir, a mustang dyno gets its results by two constants for the dyno’s algorithms. One being the vehicle weight, the other being what’s called “Horsepower At 50mph”. This is a number that represents how much horsepower it takes for the vehicle to push the air to maintain 50mph. This is used as the aerodynamic force. Mustang dyno’s are also equipped with a eddy currant load cell. Think of a magnetic brake from a freight train. This magnetic brake can apply enough resistance to stall a big rig. Off one side of the eddy currant load cell, there is a cantilever with a 5volt reference load sensor (strain gage). As the rollers are spinning this load sensor is measuring the actual torque being applied. So as the rollers spin, the load sensor is measuring the force being applied, sending that information to the dyno computer, taking into account the two constants entered earlier, computing the amount of resistance needed to be applied to the rollers to load the car so that the force of the rollers resistance is as close to the force the car sees on the street. The dyno is then able to calculate the total force being applied to the rollers in torque, and then taking the derivative of that torque curve to arrive at the horsepower curve. Since torque is an actual force of nature, like gravity and electricity, it can be directly measured. Horsepower is an idea that was thought up by man, and cannot be directly measured, only calculated.
I assure you, Im far from clueless...if what i wrote in my last post was anything it would give you some insight that I know a little about what im talking about.

Im aware how a mustang dyno works...but a DYNO in general (no matter WHAT type, brand, etc) can NOT and will not give a real accurate measure just based on weight..it cant take into account the amount of drag the air provides on the car when it's going down the interstate WOT in 4th gear, can it?

The weight of the vehicle does not impact the RWHP results NEARLY as much as the weight of the extra rotational mass that a 5th gen has versus a c6 vette. Why would you even try and dispute that? LoL
__________________

2012 Camaro 2SS/RS - LS3/TR6060: Cam, Headers, Exhaust, Intake, Gears, Twin Disk, Suspension, Tuned - 475rwhp, 443rwtq
3rdgen3 is offline   Reply With Quote
Old 10-15-2013, 05:37 PM   #21
Steve@SNL/Monster Clutch
Account Suspended
 
Drives: 2014 SS
Join Date: Jan 2011
Location: Haslet, TX
Posts: 744
Quote:
Originally Posted by toNspahreP View Post
Grand sport dry sump is worth 15hp on its own
Curious where you came up with that?
Much better systems on 800hp+ NASCAR engines are only worth ~25... http://www.enginebuildermag.com/Arti...g_systems.aspx
Steve@SNL/Monster Clutch is offline   Reply With Quote
 
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 06:59 PM.


Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.