Spinning up a 4.6 to 7500rpm

Discussion in '2005+ Mustang GT 4.6L Tech' started by ESP41, Sep 17, 2022.

  1. Badd GT

    Badd GT forum member

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    674ABBEF-5CCA-48BA-9334-2DF931B58DBA.jpeg
    This motor I Dyno’d after doing various bolt-ons until there was nothing left to do.
    Then I bolted a 2014 Gt500 tvs supercharger on it and make 610 rwhp.
    Wish I’d have skipped all the bolt ons except the cams and just went straight to the supercharger
     
  2. Dino Dino Bambino

    Dino Dino Bambino I have a red car

    Age:
    59
    3,441
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    @ESP41 BaddGT is right.
    His NA build was awesome with a torque curve to be proud of. However if you tried to replicate it today, the collective cost of CNC ported heads plus SPR cams, phaser limiters, new phaser bolts, and head changing kit would be ~$4000. He kept the stock intake manifold with CMCV delete but if you wanted to bolt on the Ford Performance intake manifold with 62mm throttle body, that would add another ~$1300. Don't forget the CAI, underdrive pulleys, LT headers, and tune that are also required to get to ~380rwhp. A supercharger or turbo kit would give you far more bang for practically the same buck.
    At this point you might be even more tempted to do a Coyote swap but ask yourself this. Would you be happy to spend over $10k and settle for "only" ~420rwhp, or would you be looking for a further $10k to boost the Coyote 'cause the itch would be too intense not to scratch?
     
  3. ESP41

    ESP41 Junior Member

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    Heh. You might think I’m nuts, but more power is not always a good thing. I have to put it down in less than ideal situations. Bumps, crappy asphalt, in the middle of high g curves, etc. I need great control of the power over the entire rpm range. Too much power means I only have my little toe barely pressing the pedal at all, other wise I just spin them. The right amount of power has me using full pedal range at the limit of traction. A fast AX car is one you can trust, and trust comes from knowing you have great control.
    If I was thinking road course or track days, that extra power would be useable and good. This car has no cage, so no track days.
    On a side note I have a track day friend with an S197 and a Gen1 Coyote w/3.55s. It’s a beast on the track. IIRC, he hits 155mph at VIR. That setup is a great itch scratcher.
     
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