How to Make a 6.1 Compete with a 6.4 HEMI

Discussion in 'Challenger SRT8 Engine & Performance Modifications' started by SRT-Tom, Dec 1, 2025.

  1. Dec 1, 2025 at 5:35 AM #1
    SRT-Tom

    SRT-Tom Well-Known Member Staff Member Super Moderator Article Writer

    Posts:
    8,015
    Likes Received:
    2,730
    Joined:
    Oct 2, 2011
    Location:
    southern New Jersey
    This video shows how to make a 6.1 compete with a 6.4 HEMI. Basically, there are four easy mods:

    1. Long tube headers
    2. Catless exhaust
    3. Tune
    4. 180 degree thermostat