Challenger SRT8 Engine & Performance Modifications

Discuss the 425HP/420lb-ft 6.1L HEMI V8(2008-2010) and 470HP/470lb-ft 6.4L HEMI V8(2011-) engines and performance mods.

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  1. BIRDMAN

    6.4L V8 Challenger SRT8 Thread Prefix Example

    BIRDMAN, Sep 19, 2011
    Replies:
    3
    Views:
    5,821
    Shaggy
    Nov 30, 2011
  1. SRT-Tom

    First SRT Challenger

    SRT-Tom, May 9, 2026
    Replies:
    0
    Views:
    204
    SRT-Tom
    May 9, 2026
  2. jamesckelley

    Dodge Attitude 2015–2021 Workshop and Service Manual PDF Request

    jamesckelley, Apr 21, 2026
    Replies:
    5
    Views:
    614
    HellKitten
    Apr 25, 2026
  3. SRT-Tom

    Charger Demon?

    SRT-Tom, Feb 23, 2026
    Replies:
    0
    Views:
    304
    SRT-Tom
    Feb 23, 2026
  4. SRT-Tom

    6.4 vs. 6.1 HEMI Comparison

    SRT-Tom, Feb 22, 2026
    Replies:
    0
    Views:
    235
    SRT-Tom
    Feb 22, 2026
  5. SRT-Tom

    SRT Engines

    SRT-Tom, Feb 16, 2026
    Replies:
    0
    Views:
    187
    SRT-Tom
    Feb 16, 2026
  6. SRT-Tom

    Updated Thoughts

    SRT-Tom, Feb 8, 2026
    Replies:
    0
    Views:
    122
    SRT-Tom
    Feb 8, 2026
  7. SRT-Tom

    Rarest Modern HEMI

    SRT-Tom, Jan 26, 2026
    Replies:
    1
    Views:
    220
    Cloverdale
    Jan 28, 2026
  8. SRT-Tom

    How to Make a 6.1 Compete with a 6.4 HEMI

    SRT-Tom, Dec 1, 2025
    Replies:
    0
    Views:
    246
    SRT-Tom
    Dec 1, 2025
  9. SRT-Tom

    Old School Muscle Car

    SRT-Tom, Nov 13, 2025
    Replies:
    3
    Views:
    302
    SRT-Tom
    Nov 22, 2025
  10. SRT-Tom

    SRT V10 Challenger

    SRT-Tom, Oct 1, 2023
    Replies:
    8
    Views:
    1,223
    baccaruda
    Nov 21, 2025
  11. SRT-Tom

    6.1 Performance Mods- 450 RWH

    SRT-Tom, Nov 10, 2025
    Replies:
    0
    Views:
    207
    SRT-Tom
    Nov 10, 2025
  12. SRT-Tom

    6.1 Engine Production

    SRT-Tom, Nov 10, 2025
    Replies:
    0
    Views:
    186
    SRT-Tom
    Nov 10, 2025
  13. SRT-Tom

    6.1 Engine Specifications

    SRT-Tom, Nov 10, 2025
    Replies:
    0
    Views:
    256
    SRT-Tom
    Nov 10, 2025
  14. SRT-Tom

    Hellcat in the UK

    SRT-Tom, Aug 30, 2025
    Replies:
    2
    Views:
    302
    baccaruda
    Oct 2, 2025
  15. SRT-Tom

    Scatpack Performance Mods

    SRT-Tom, Sep 14, 2025
    Replies:
    1
    Views:
    379
    baccaruda
    Sep 19, 2025
  16. SRT-Tom

    2009 Salvage Challenger

    SRT-Tom, Aug 30, 2025
    Replies:
    2
    Views:
    361
    Niles
    Sep 8, 2025
  17. SRT-Tom

    6.1L 2008 SRT for Sale

    SRT-Tom, Jul 20, 2025
    Replies:
    4
    Views:
    480
    baccaruda
    Jul 20, 2025
  18. SRT-Tom

    Racer X's Races his Demon 170

    SRT-Tom, Jan 8, 2025 ... 3 4 5
    Replies:
    48
    Views:
    3,438
    Moparisto
    May 27, 2025
  19. SRT-Tom

    SRTs Being Auctioned at Mecum

    SRT-Tom, Jan 1, 2025 ... 2
    Replies:
    11
    Views:
    1,210
    bobbymac
    Apr 14, 2025
  20. SRT-Tom

    Scat Pack

    SRT-Tom, Mar 24, 2025 ... 2
    Replies:
    10
    Views:
    1,148
    Sexy Blue
    Mar 25, 2025
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