Low end torque 5.7 quad cab

Discussion in 'Engine & Performance' started by schwarz, Jan 9, 2017.

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  1. schwarz

    schwarz Senior Member

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    I have a good list of bolt-ons (LTH, Magnaflow exhaust, free flow cats, y - pipe, 87mm throttle body, 4.56 rear gears, custom hemifever tune, cold air intake) but I'm lacking low end torque. I think the Magnaflow cans and y-pipe might be letting too much air out, not enough back pressure. I mainly use my truck for city driving but I need more low end power, truck feels dead below 3k, barely moves unless I really step on it...Any suggestions on mods that will improve low end engine response?

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  2. hemi_loredo03

    hemi_loredo03 Member

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    You need a cam. One that is designed for more torque then topend. I used to have a Comp Cam that was a torque monster. I could definitely feel the torque increase and was way fun around town. Not to mention it would lope hard af :). You could hit up Jay Greene for a custom grind or go out and get the cam I had directly from Comp Cam.
    This is a video of my truck with that cam. Doesn't do it any justice but you can definitely here the lope when the cutouts are open in this video.
    https://youtu.be/7yTlfJC1hZk

    This is the cam card on that torquey cam, it was a 210x cam by KRC
    [​IMG]
     
  3. MADDOG

    MADDOG CTD Driver Staff Member

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    A good cam will do it.

    Or, you could put a reducer in your exhaust at the inlet of each muffler.
     
  4. Bigdaddycodes

    Bigdaddycodes Senior Member

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    Get a decent cam and a 3000 stall torque converter, you wont be able to take the smile off your face
     
  5. chrisp2493

    chrisp2493 Senior Member

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    How much work goes into new cams? On the hemi, are you buying 4 new camshafts? Pulling the front end off the engine?


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  6. schwarz

    schwarz Senior Member

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    Thanks for all the feedback guys! Looks like I'm going to be in the market for a cam, I recently had my trans rebuilt and don't want to make any major changes (TQ) until I need to. Does switching cams have any long term negative effects on the block, any need to replace lifters or springs to 6.3 version?

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  7. hemi_loredo03

    hemi_loredo03 Member

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    It is one cam for the hemi. Whole front end of the engine comes off. Springs on the heads will need to be replaced as well, welp I guess that could depend on the cam. Pushrods will need to be replaced.
     
  8. schwarz

    schwarz Senior Member

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    Damn sounds intense, don't think I could do that myself. Any idea what a shop would charge for the work? Where can I buy springs and rods? Does anyone have dyno results pre-post cam?

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  9. Hemi450hp

    Hemi450hp Preferred Vendor

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    I would put a higher stall tq converter in there before looking into a bigger cam. There is no question that a proper cam will make more tq, but it will not show as much of a gain in off the line power as a 2800-3000 stall tq converter.
     
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  10. shane1981

    shane1981 Senior Member

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    I'm with Matt on the stall first. it would be cheaper and easier to install also

    tuned by Jay Greene
     

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