530 RW HP Hennessey Camaro SS Supercharged Video - Page 8 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Matt TuneTime · 05-19-2009, 08:17 AM

Quote:

Originally Posted by THE EVIL TW1N

Maybe on a mustang dyno those %'s will hold up, but not on a Dynojet. For reference, look at all the SAE Certified engines and see what they dyno at the wheels. You will see that the typical set up loses ~12% for a manual, ~15% for the auto on a dynojet.

To be losing 20+% at the wheels, you must be running a 9" rear end + an inefficient transmission, such as a C6 or maybe even a TH400.

Quote:

Originally Posted by THE EVIL TW1N

Those are a little on the low side, but either way, your math is wrong. To correctly find the HP would be to DIVIDE 422 by .8x to find the loss. EXA) 422 / .85 (15% loss) would be ~497 hp.

Ok so based on that we will say your 12% and my 18% where of . So it seems that 15% is correct for a solid axle stick car , so 18% for IRS would be normal loss for stick car , 20-21 % for auto IRS [ assuming 4l60e and one piece drive shaft ] and we are back to my original 23-24% for 2 piece drive shaft and 6l80e . You can add drivetrain componants and not add to the loss .

BlownChevy · 05-19-2009, 12:45 PM

My god men......All this math is shrinking my brain.

Are we really arguing about percentages +/- ?

Crowley · 05-19-2009, 01:03 PM

The accepted values should be around 12% loss for the manual and around 15% loss for an auto on a dynojet .. these are what are the norm for most newer cars even with IRS (ex 03/04 cobras).

Crowley

Sales@Hennessey · 05-19-2009, 01:38 PM

Quote:

Originally Posted by Crowley

The accepted values should be around 12% loss for the manual and around 15% loss for an auto on a dynojet .. these are what are the norm for most newer cars even with IRS (ex 03/04 cobras).

Crowley

Accepted Values are always best to do a base line on the car on your dyno of choice before upgrading. We offer this service to our customers. On avg we are seeing between a 15%-18% on our DynoJet Dyno with the new camaros.

DynoJet is an inertia dyno and SHOULD read higher then a Mustang/Superflow/Dyno Dynamics (aka Load Based Dynos). However, if the load based dyno you are on is being overriden by the operator, it can produce a higher number then a dyno jet. Most Dyno numbers you see out there are on a DYNOJET. Load Based dynos are GREAT for tuning.

Thanks
James

Crowley · 05-19-2009, 01:41 PM

Wow .. that really surprises me that there are that much loss in the new camaro drivetrain ... it is disappointing for sure. I would have thought they could do better than the 03/04 cobras with the T56 and IRS but I guess not ..

So we should really only expect 350 to 360 at the wheels for a dynojet ... That just sounds low .. I would expect the one I saw at just over 370 to be the norm which would put it right around the 12% loss ..

Crowley

Sales@Hennessey · 05-19-2009, 01:46 PM

Quote:

Originally Posted by Crowley

Wow .. that really surprises me that there are that much loss in the new camaro drivetrain ... it is disappointing for sure. I would have thought they could do better than the 03/04 cobras with the T56 and IRS but I guess not ..

So we should really only expect 350 to 360 at the wheels for a dynojet ... That just sounds low .. I would expect the one I saw at just over 370 to be the norm which would put it right around the 12% loss ..

Crowley

THis is why I mention, dont assume off other cars... Use your own car and the dyno you perfer and base those calculations at that time. Dynos should be used as a tool for tuning and displaying increases in power over a base...

Obviously with a comparable car, the Dodge Challenger, we were seeing cars dyno from 345hp to 370hp (which is 18% to 12% DTL). Every car is different and you cannot assume your car has a loss of 12% and it may be 18%! Right now since there has not been alot of Camaros on Dynos, most people are assuming a 15%. Again this is on a Dynojet... and remember... motors arent broken in yet so dont blame the drivetrain yet!

Crowley · 05-19-2009, 01:52 PM

Quote:

Originally Posted by Sales@Hennessey

THis is why I mention, dont assume off other cars... Use your own car and the dyno you perfer and base those calculations at that time. Dynos should be used as a tool for tuning and displaying increases in power over a base...

Obviously with a comparable car, the Dodge Challenger, we were seeing cars dyno from 345hp to 370hp (which is 18% to 12% DTL). Every car is different and you cannot assume your car has a loss of 12% and it may be 18%! Right now since there has not been alot of Camaros on Dynos, most people are assuming a 15%. Again this is on a Dynojet... and remember... motors arent broken in yet so dont blame the drivetrain yet!

Thanks for the info .. That is normally what I use them for.... can't wait to get the car and get a baseline and then go from there ... either way ... the LS3 has much potential and it is very exciting ..

Crowley

*radz28* · 05-19-2009, 03:25 PM

Thanks for the info' James. It looks like we just need some more break-in miles to see what's going to be a good average baseline. Still, 350+ RWHP is nothing to sneeze at. I think it's easy to forget that's going to be a lot of power for many people.

faSStcars · 05-20-2009, 09:47 PM

The Hennessey Camro looks awesome......I would have thought a little faster with the charger but still a good package.

RLHMARINES · 05-20-2009, 10:52 PM

can someone please show me where the corsa exhaust is in the drag video, cause i see factory mufflers in the video.

ironpeddler · 05-21-2009, 02:38 PM

Was the 0-60 time 3.6? Or am i seeing things

Sales@Hennessey · 05-21-2009, 02:44 PM

Also for those who were asking about the Weight, We scaled the car this morning with a full tank of gas, 3,965lbs!

Camarofan123 · 05-21-2009, 05:00 PM

Wow that's pretty heavy! :O

13F20 · 05-21-2009, 07:53 PM

guys dont get to ramped up over this car. I called a whaile back to get a quote on ordering one and I was quoted over $100k for the order.

05-19-2009, 01:03 PM	#101
Crowley Okie doke Drives: 2012 GT500 Join Date: Sep 2008 Location: McKinney Texas Posts: 3,568 View My Garage	The accepted values should be around 12% loss for the manual and around 15% loss for an auto on a dynojet .. these are what are the norm for most newer cars even with IRS (ex 03/04 cobras). Crowley __________________

05-19-2009, 01:41 PM	#103
Crowley Okie doke Drives: 2012 GT500 Join Date: Sep 2008 Location: McKinney Texas Posts: 3,568 View My Garage	Wow .. that really surprises me that there are that much loss in the new camaro drivetrain ... it is disappointing for sure. I would have thought they could do better than the 03/04 cobras with the T56 and IRS but I guess not .. So we should really only expect 350 to 360 at the wheels for a dynojet ... That just sounds low .. I would expect the one I saw at just over 370 to be the norm which would put it right around the 12% loss .. Crowley __________________

05-19-2009, 03:25 PM	#106
radz28 Petro-sexual Drives: Ultra-Grin Join Date: Oct 2006 Location: Crazy Coast Posts: 15,198 View My Garage	Thanks for the info' James. It looks like we just need some more break-in miles to see what's going to be a good average baseline. Still, 350+ RWHP is nothing to sneeze at. I think it's easy to forget that's going to be a lot of power for many people. __________________ '20 ZL1 Black "Fury" A10, PDR, Exposed CF Extractor Magnuson Magnum DI TVS2650R // RFBG // Soler 103 // TooHighPSI Port Injection // THPSI Billet Lid // FF // Katech Drop-In // PLM Heat Exchanger // ZLE Cradle bushings // BMR Chassis-Suspension Stuff // aFe Bars // Diode Dynamics LEDs // ACS Composites Guards // CF Dash // Aeroforce // tint // other stuffs

05-20-2009, 09:47 PM	#107
faSStcars Drives: 1995 Camaro Z28 M6 Convert Join Date: Nov 2008 Location: Raleigh NC Posts: 61	The Hennessey Camro looks awesome......I would have thought a little faster with the charger but still a good package. __________________ 1995 Camaro Z28 M6 convertable: Callies 396, Vortech s-trim, 9" rear 4.30. 11.04 @ 127.8 http://www.myspace.com/steve192837465

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