A few interesting differences between the Hellcat and SRT392

Discussion in 'Dodge Challenger SRT Hellcat' started by SRT_HC_707, Mar 20, 2015.

  1. SRT_HC_707

    SRT_HC_707 SRT_HC_707 Staff Member

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    When I think of the Hellcat vs. the SRT392 I primarily thing that the engine and trans (both A8 and M6 are beefed up in various ways for Hellcat) are the primary differences.

    It's always interesting when you start looking at the details because there tends to be many more small differences. The obvious like the splitters, vents etc. etc. The sway bars are different.

    According to the following information I was reading on Allpar I was suprised that the Hellcat has hydraulic rack (steering) and the SRT392 is electric. If this is true I wonder what the reasoning was. There are some other interesting differences too. I highlighted the items that I didn't know and thought were interesting in red.

    Does anyone know why the difference in steering (hydraulic vs. electric). Even the turning radius is different which is interesting (rack must be a bit different internally I would guess).

    Hellcat is also less aerodynamic than the SRT392.


    2015 Dodge Challenger SRT  the muscle cars return with Hellcat engines.png
     
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  2. Hubbs

    Hubbs Silver Member

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    The pwer steering thing has been talked about quite a bit. I believe they said they went with hydraulic to improve steering feel. The aero is worse on the HC becasue it's making more downforce. The suspension is supposedly firmed up a little bit over the 392, so that accounts for the sway bar differences. The width is probably due to the bigger tires (275s vs 245s). The length is due to the larger splitter and wing.

    Not sure about the turning circle. Must be related to the wheel/tire selection I would guess.
     
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  3. SRT_HC_707

    SRT_HC_707 SRT_HC_707 Staff Member

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    I guess I missed the steering discussions (or forgot).

    I just find all the little things interesting. There is always more little differences than most people are aware of.
     
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  4. Carnage

    Carnage SRT Hellcat Supercharged Moderator Staff Member Hellcat Car Club Gold Supporting Member HCC Charter Member

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    Cool share and info guys
     
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  5. butterscotch71

    butterscotch71 Hellcat Member

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    I believe 275 tires are standard on both the Hellcat and the 392 SRT
     
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  6. owenspackman

    owenspackman BritishCat

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    good info. but SRT 392's have same rims and 275's as the Hellcat. Both ride on 275's
     
  7. owenspackman

    owenspackman BritishCat

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    you are correct, i was too slow!
     
  8. SRT_HC_707

    SRT_HC_707 SRT_HC_707 Staff Member

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    Yes, that is correct. Scat Pack has 9.0 (instead of 9.5) rims and 245 tires.

    I love looking at all the little differences. I really dig a bare bones Scat Pack but if you option it out well I believe the SRT392 becomes the better buy. All three are awesome cars!
     
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  9. SRT_HC_707

    SRT_HC_707 SRT_HC_707 Staff Member

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    I wonder what the diameter of the fuel supply line is on the SRT392 and ScatPack. Hellcat is 1/2" (that is huge). I don't know what the other two are...
     
  10. owenspackman

    owenspackman BritishCat

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    That's why i went with the 392 originally. Has a little more class than the Scat Pack in my opinion (SP is still a great car though!).

    But nothing compares to the Hellcat, hence the upgrade.

    the 275's on the 392 can't keep traction, so no wonder people need to upgrade on the Hellcat. I may not have mine yet (D1 currently) but I do have NT555R's 305's waiting for her when she comes home!

    The subtle differences between 392 & Scat Pack, make the SRT the better buy.
    The subtle (and not so subtle) differences between the 392 & Hellcat, make the Hellcat the better buy!!
     
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  11. tsc

    tsc SRT Hellcat Enthusiast

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    Likely used a hydraulic power steering system rather than electric due to better feel and better compatibility with the Hellcat setup and pulleys. Completely different steering racks, so hence the different turning radius. As far as aerodynamics, the taller rear spoiler is creating more downforce, which creates drag. Also, all of the open air in the front fascia is nice looking and great for cooling, especially the inner lamp air inlet, but all of that adds drag, too.

    Other differences I can think of, for the Challenger.. some obvious, some not so obvious:

    1) Engine, duh.
    2) No red key on SRT 392, black keys only AFAIK.
    3) 180 MPH speedometer on SRT 392 instead of 200 MPH speedometer.
    4) Different front fascia and hood.
    5) Body color spoiler and chrome fuel filler door instead of satin for both on the Hellcat.
    6) Different gear ratios for M6 transmission (A8 gear ratios are the same for both). Different final gear ratio on A8 between 6.2 and 6.4 engines.
    7) SRT 392 has the 'missing' Technology Group features that the Hellcat doesn't have -- Forward Collision Warning and Adaptive Cruise Control.
    8) Hyper black finish for SRT 'slingshot' wheels only available (currently) on SRT 392.
    9) Stripe option available on SRT 392.

    I'm sure there's more that I'm missing....
     
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  12. AvsBest

    AvsBest Silver Member

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    Red speedo and RPM cluster
     
  13. MuscleGarageLA

    MuscleGarageLA SRT Hellcat Supporter Gold Supporting Member

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    707bhp vs 485 bhp....i would have highlighted that at the top. Everything else (in my humble opinion) is academic. I know some others have mentioned Engine/trans differences but when you highlight the huge HP difference it makes more impact..:D:)

    Even the black key with the modest 500bhp restriction, unleashes more horses than the SRT.
     
    Last edited: Mar 20, 2015
  14. SRT_HC_707

    SRT_HC_707 SRT_HC_707 Staff Member

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    I hear you but it's all the little things I find interesting. It's amazing how many 'little' differences there are between the HC and SRT392. Not even better sometimes just different. I find it interesting. It's the dork in me.
     
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  15. GTA Hellcat

    GTA Hellcat Senior Hellcat Member

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    Electric steering system weights less than hydraulic and doesn't directly take power away from the engine, but it doesn't offer the same steering feel.

    I believe they choose hydraulic for the Hellcat because:

    1) It already has 707HP++, so if a relatively small amount goes to assist steering it doesn't really make any difference.
    2) It is already heavy so what is a few extra pounds in exchange for better steering feel for a front heavy car that can benefit the most from it.
     

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