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    #1

    Cobra 4v heads

    Ford Racing #397-M-6049(99)-GT

    What problems are there to dropping these onto my 08 4.slow?

    I have been told the blocks in the Cobras were different.
    2008 Mercury Grand Marquis GS Bone Stock

    The modern definition of "racist" is "someone who is arguing with a Liberal".--updated Peter Brimelow quote.
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    #2
    Originally posted by RugerP97DC View Post
    Ford Racing #397-M-6049(99)-GT

    What problems are there to dropping these onto my 08 4.slow?

    I have been told the blocks in the Cobras were different.
    good question for ryan
    89 townie, mild exhuast up grades, soon to have loud ass stereo....

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      #3
      TFS TW heads for the 4.6 would be much simpler, you'd have more room, and they'd also probably make more power with a decent set of cams.
      **2012 Ford Mustang Boss 302: 5.0/ 6 spd/ 3.73s, 20K Cruiser
      **2006 MGM,"Ultimate": 4.6/ 2.73/ Dark Tint, Magnaflows, 19s, 115K Daily Driver
      **2012 Harley Davidson Wide Glide (FXDWG):103/ Cobra Speedsters/ Cosmetics, 9K Poseur HD Rider
      **1976 Ford F-150 4WD: 360, 4 spd, 3.50s, factory A/C, 4" lift, Bilsteins, US Indy Mags, 35s Truck Duties

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        #4
        Yeah, TFS heads and cams would be the way to go.
        Can you put 4v heads on? Yes. Is it going to be an absolute pain in the ass? You bet your ass.
        You will have clearance issues with the wiper cowl.
        BUT!!!.....
        Since you have an 08, they have the revised front suspension, including the cross member. Which means, you'd be better off saving up money and getting a 4.6 (or 5.0) DOHC motor. Those will swap right in. That way, you can have the motor that you want built. And it would be certifiably BAD-ASS.
        just my 2 cents...

        -ryan s.
        08 Lincoln Navigator L - 233k
        03 Mercury Marauder- 63k
        97 Ford Crown Victoria HPP "Tank of Justice III" (TOJ3) - 194k -->578.9 miles on ONE tank of gas<--
        94 BMW 325i Convertible - 135k
        73 VW Super Beetle "Bunky" <----- Wifey's
        12 Mini Cooper S - 90k <---- Wifey's
        Originally posted by pantera77
        Well my buddy tells him he knows exactly who loves buying shitboxes.

        Comment

          #5
          ive heard that swapping the 4v heads on a 2v motor will drastically drop the compression
          -1999 P71 Crown vic X LAPD..
          -1966 mustang, 5.0 roller crate motor, t5 etc
          -1972 maverick 5.0 roller crate motor with EFI and a Lentech AOD

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