Fox Blown Head Gasket-upgrade Ideas

Discussion in '1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-' started by stang89bidges, Mar 30, 2014.

  1. Well said, I think those are great points also :nice: money into them is the key.
  2. Is that a trick question? I'm not exactly sure what you're asking me here?
  3. No trick question. My bad. I guess I skipped right over you said GT40X... And I even quoted you!! :bang:

    I have been tearing my car apart and finding a butt load of little crap that needed to be fixed for 2 days straight. It's been keeping me up nights thinking about what I need to do and how much friggin money it's costing me. Brain malfunctioning...

    Someone please :uzi: me...
  4. The bloody knuckles and sleepless nights will be worth it in the end, the first time it sparks to life. Be patient man, we have all had to endure the frustration at some point.....and some of us just keep coming back for more!!!
    stang89bidges likes this.
  5. They're Ford heads. You see them on their crate motors and I think they can still be had from their catalog (not 100% sure about that). GB is right though, they are pretty nice heads for the money and I wouldn't mind getting my hands on a set if the price were right.
  6. Its all about highs and lows.. For me the highs are high and the lows are low. There really isn't a middle ground. I have plenty of sleepless nights fwiw.
    stang89bidges and Gearbanger 101 like this.
  7. Some time has passed and I'm just now ripping my car apart to replace the head gaskets. If I were to go ahead and buy the GT40X heads, do I need to do anything else or can I just simply replace the heads and be ok with stock injectors, MAF, throttle body, intake?

    Thinking of these:
  8. You can just replace the heads if you wish, but the amount of additional power you make will be determined by the supporting parts involved.

    Heads alone probably won't net you more than about 20-30hp without a good intake and other induction components to back them up. This goes for any aftermarket cylinder head.
  9. I'm going to strongly recommend you at the very least pick yourself up an Explorer intake for the swap (get one off of a '96 as it still has the correct EGR passages). The other items you listed can be pulled on and off with minimal fuss, but the intake as you now know is quite involved and makes a real mess. They can be had for around $100 in most cases are a big improvement over your current stock intake. Heck, the cost of replacing the intake gaskets a second time is half the cost of the heads. It'll cost you more money and effort not to run them.....DO IT!!!

    You can find one in your area, or nearby with this

    Also, make sure to get the M-9439-A50 intake gasket kit, or the Fel-pro equivalent. The GT40X's have the intake ports located slightly higher than most and a set of standard 1250 intake gaskets won't cut it. Also, didtch the corked ends that come with the gasket kit and use "The Right Stuff" sealant. Lay it on thick and you'll never have to worry about a leak with it.
  10. excellent info thank you. If my heads end up ok and not cracked or damaged I'm keeping them for now. Would it still be wise to upgrade to the explorer intake with stock heads?
  11. Since you've already got the intake off, sure....every little bit helps. You might pick up another 10hp or so in the upper regions. Probably not much in the SOTP feeling, but noticeable. It's really up to you.

    Going one mod at a time generally doesn't produce large increases in power. You're not going to feel 10hp that an intake will give you like you will the 75hp a H/C/I set up will. I've always found it best to do them as a consorted effort to get that big "hit" we all love, but it's up to you.
  12. and were talking both upper and lower intake together yes?
  13. I wouldnt waste the time and effort to simply swap intakes. At best you are talking about 10-20hp. Wait untill you do the heads and do it all at once. The explorer intakes do not come with the #5 intake runner tapped for the IAT or the passenger rear boss tapped for the coolant line. No big deal- just start off with small drills and work your way up and then tap them. If you pull the explorer hard coolant line you won't need to tap the lower rear intake as the coolant tube attaches to it, vs on the mustang it goes into the intake. Most guys end up just capping off the EGR coolant lines anyway.

    Get a 93-96 upper and lower, as they have the hole in the middle of the intake for the EGR.
    Gearbanger 101 and stykthyn like this.
  14. I may wait like you mention mike. I would like to get the car back up and running sooner than later. I would need to do some serious research to figure out all the tools and methods on these explorer intakes. And not to mention research methods on drilling and tapping properly. I have tapped existing stripped threads before but never drilled and tapped new holes. I don't quite know how all the intake/vacume/egr/water lines work either just yet. I need a diagram/white paper to explain it all. Or at least research threads and sites on it. Without understanding the flow of things I wouldn't want to start drilling and tapping and get it wrong.

    Basically the heads will take me a while. I'm a do it yourselfer, not a professional. Gonna take me a bit to figure it all out ;-)

    Gearbanger thanks for all your help, Mike you as well, I think I have made my decision to stay with stock for now(unless the heads end up cracked...). If they end up cracked I will return here for help maybe finding documentation on the methods and diagrams for the intake swap.