09-03-2018, 10:48 PM | #113 | |
Drives: 13 Camaro SS Join Date: Oct 2012
Location: Texas
Posts: 256
|
Quote:
|
|
09-04-2018, 06:56 AM | #114 | |||
Drives: 2016 Challenger Hellcat, 2018 ZL1LE Join Date: Dec 2009
Location: Northern NJ
Posts: 3,003
|
Quote:
From a dig the zl1 will probably win because of the traction advantage. This discussion is in reference to the video which is from a roll. Quote:
I still believe that an automatic Hellcat vs. a stock Zl1 will be faster from a roll, especially a manual Zl1. Both of mine are manuals so my experience is limited with automatic Hellcats. But an automatic Hellcat is obviously going to be faster than mine. I hadn’t considered the drag factor on my Zl1 1LE. That may be the reason why the Hellcat as been faster when matching both of my cars against each other. Quote:
I’ll leave it at “Hellcat is faster”.
__________________
2016 Challenger Hellcat /B5 blue/Sepia interior/Brass Monkey Wheels/
2018 ZL1 1LE/Red hot 2019 Shellby GT 350R/ Oxford white/ Matte Black Stripes/ Carbon Fiber Dash/ Electronics Package #413 |
|||
09-04-2018, 05:10 PM | #115 | |
Drives: GM Join Date: Sep 2010
Location: Marydel, DE
Posts: 1,321
|
Quote:
__________________
Roto- Fab Cai, SLP 1 3/4" headers, 3"X pipe, LM2 cat back, Comp Cam & AI Heads, SLP UP, RPM Tuned, GPI Intake, Vmax TB, ADM Air Scoop, 3.91 Gears, Gforce driveshaft, Braille 21#, Elite Catch Can, Pfadt Tie Rods, Diff Bushings and Trailing arms, Eibach spings & sways, BMR cradle bushings, Nt555r's.
Last edited by 96MrBass; 09-04-2018 at 05:11 PM. Reason: . |
|
09-04-2018, 05:41 PM | #116 | |
Drives: Love the one you're with Join Date: Sep 2009
Location: Downtown Charlie Brown
Posts: 11,850
|
Quote:
There is no mathematical way of backwards rating a motor based on chassis dyno numbers. It's all guess. |
|
09-04-2018, 05:56 PM | #117 |
Drives: GM Join Date: Sep 2010
Location: Marydel, DE
Posts: 1,321
|
Been hearing the underatted thing since the first hellcat was released and hit a dyno.
__________________
Roto- Fab Cai, SLP 1 3/4" headers, 3"X pipe, LM2 cat back, Comp Cam & AI Heads, SLP UP, RPM Tuned, GPI Intake, Vmax TB, ADM Air Scoop, 3.91 Gears, Gforce driveshaft, Braille 21#, Elite Catch Can, Pfadt Tie Rods, Diff Bushings and Trailing arms, Eibach spings & sways, BMR cradle bushings, Nt555r's.
|
09-04-2018, 06:29 PM | #118 |
Drives: Love the one you're with Join Date: Sep 2009
Location: Downtown Charlie Brown
Posts: 11,850
|
|
09-04-2018, 07:20 PM | #119 | |
Drives: 2021 LT1 10 speed auto Join Date: May 2013
Location: Connecticut
Posts: 2,343
|
Quote:
Thats pure bull, there have been so many stock hellcats on a chassis dyno and they all put down more rear wheel horse than they should be. You can come very close when you take many, many samplings of dyno #s for the stock hellcat and do the math. Everyone higher than the approx 615 realistic rear wheel horse to represent 707 flywheel horsepower. The 1/4 trap speed of many stock hellcats also indicate more than 707 horse in a 44 - 4500 lb car. The 707 hp is truly underated. Gm is the only manufacturer that footnotes there HP ratings with the SAE certified notation. |
|
09-04-2018, 07:32 PM | #120 | |
Drives: Love the one you're with Join Date: Sep 2009
Location: Downtown Charlie Brown
Posts: 11,850
|
Quote:
It's not hard to find the certification. I had it posted and deleted it because I'm not sure if I'm allowed to post it as there is a charge to purchase them. |
|
09-04-2018, 07:41 PM | #121 |
Drives: 2008 Pontiac G8 GT, Shelby GT500 Join Date: Mar 2011
Location: Long Island, New York
Posts: 1,376
|
I have to second the bull notion. Something is definitely fishy. A stock, 707 horsepower Hellcat dynos around the same, if not a tiny bit more than what we've been seeing the new LT5 ZR1's dynoing at, which are rated at 755 hp. How do you explain that? I find it hard to believe there is that much less parasitic loss on the Hellcats than there are the new ZR1's. Especially since one of the numbers I'm referencing is a manual ZR1.
|
09-04-2018, 07:45 PM | #122 | |
Drives: Fast Join Date: Mar 2015
Location: Michigan
Posts: 3,696
|
Quote:
Worth noting that true 707 BHP - 20% for Autos should result in 565 RWHP. I'd guess the average Hellcat stock dyno is 620-640 RWHP, and I've seen some as high as 670-680 RWHP. Bolt on levels for the LT4. For a true 707 BHP engine to put down 620-640 RWHP, it would need to make 770-800 HP. So either Dodge has figured out the most efficient drivetrain ever made. Or it's underrated...aaaaand I'm going to go ahead and agree with SRT guys, stock dyno numbers from hellcat.org, and what I've seen - the engine is underrated. |
|
09-04-2018, 07:46 PM | #123 |
Drives: 2013 ZL1 Join Date: Dec 2012
Location: Illinois
Posts: 807
|
__________________
'13 ZL1
'06 TBSS '98 TJ '87 GN |
09-04-2018, 07:46 PM | #124 | ||
Drives: 2016 Challenger Hellcat, 2018 ZL1LE Join Date: Dec 2009
Location: Northern NJ
Posts: 3,003
|
Quote:
Quote:
__________________
2016 Challenger Hellcat /B5 blue/Sepia interior/Brass Monkey Wheels/
2018 ZL1 1LE/Red hot 2019 Shellby GT 350R/ Oxford white/ Matte Black Stripes/ Carbon Fiber Dash/ Electronics Package #413 |
||
09-04-2018, 07:49 PM | #125 | |
Drives: 2013 ZL1 Join Date: Dec 2012
Location: Illinois
Posts: 807
|
Quote:
Just like the RedEye 797 rating is actually the same motor as the 808 Demon, they just don't want to alienate the Demon
__________________
'13 ZL1
'06 TBSS '98 TJ '87 GN |
|
09-04-2018, 07:56 PM | #126 | |
Drives: Love the one you're with Join Date: Sep 2009
Location: Downtown Charlie Brown
Posts: 11,850
|
Quote:
Good one. So, I guess from what all you folks are saying about this motor having hidden power is that SAE is no longer a third party organization that has any meaning or value whatsoever? How we know the HP numbers on any car are real then? Guess we have to believe the chassis dyno and all the backwards math wizards we have running around. This reminds me of guys in my field thinking that HVAC systems can be sized accurately based on square footage alone. Whatever bs quick calculation they think works doesn't much of the time. |
|
|
|
Post Reply
|
|
|