96-98 cobra cam swap mach 1

Discussion in '96-04 - 4V Specific' started by copmagnet, Dec 22, 2013.

  1. copmagnet

    copmagnet Active Member

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    So next weekend when my cams Arrive I will be swapping them(97 cobra cams) into my 04' mach 1. has anybody here done this before?
     
  2. MustangChris

    MustangChris Legend SN95 Supporter Retired Staff

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    not personally, but I hope to do it when my engine comes out.

    what kind of research did you put in before purchase?
     
  3. copmagnet

    copmagnet Active Member

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    Way more then enough. I've also spent alot of time talking to NAZ.
     
  4. MustangChris

    MustangChris Legend SN95 Supporter Retired Staff

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    nice.


    what kinda info can you pass along? Is the lift different? or just duration? or both?

    why did they change the cams out if the B head cams are better performers? All i know is that a guy on here told me to do the B-head cam swap while my motor is out. lol.
     
  5. copmagnet

    copmagnet Active Member

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    Ford redesigned the cams for the 99/01 cobra because of the new motor. kinda like the NPI to PI changes. BUT the mach 1 uses truck cams to get alot of torque (thus why it is rated at 305 unlike the 01 cobra). the factory mach cams are 184degrees at .050/.397, the 96/97/98 are 204degrees at .050/397. basically its like adding a tiny comp cam. Usually the gains seen by dropping them in Dot to dot (not degreeing) nets about 15-20 HP, advancing them 4 degrees (via cloyes secondary timing gears, so easy I figured them out) shifts the power curve so instead of getting all the torque in the mid/upper rpm range(what they were dsigned for) it shifts it to the lower/mid range, and continues to make power into the upper 6k range. people who advance them 4 degrees are seeing gains of up to 30hp. This is were a short runner comes in hand, as people are making power to the redline with this combo netting numbers from the 350-380 HP range. consider me sold.

    especially since I got the cams and cam gears for under 250$. assuming I only make 20HP, thats $12.50 per HP on top of the added benefit of getting that torque down low where the 4v needs it.
     
  6. MustangChris

    MustangChris Legend SN95 Supporter Retired Staff

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    Thanks for the information, brotha! i've never seen teh adjustable cam gears on 4vs. I'm excited to see your build! :-D
     
  7. copmagnet

    copmagnet Active Member

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    [​IMG]


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    All In all it was a very easy swap. so easy I couldn't believe it. once you figure out how to get the booster and master cylinder out (6 bolts, one clip and a book of cuss words later) the drivers side cover slips right out.


    I actually had to do it twice, one last night and one today, because I was a tooth off. Woops. luckily to valve damage in my case.


    My only complaint is I didn;t get to use my adjustable gears. one of them cracked upon torquing the cam bolt. how? who knows. bad heat treating/forging..dunno. after I got it back together and test drove it I immediately felt the power increase. I was honestly amazed. it feels like going from a stock NPI to a geared and PI 2v.. it's kinda shocking. TOTALLY worth the 8 hours to swap them out (if your slow) If your really interested in doing the swap I'll give you my number and walk you through it, Very easy. I was honestly a little intimidated by the timing but after reading through the ford manual a couple times I couldn't believe how idiot proof these motors are!
     
  8. hottwheels04

    hottwheels04 Well-Known Member

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    nice sounds like a good bang for the $ , now if you had to pay for the labor and new cams I hear its not worth it, alot of guys buy aftermarket cams and they cost $1,500+ for them (esp being there are 4 cams) and then labor is usually $1,000+ so spending like $2-$4K+ to net 20-40hp isnt usually worth it..
     
  9. alex302

    alex302 Active Member

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    so did you swap all 4 cams or just intake or exhaust?
     
  10. copmagnet

    copmagnet Active Member

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    You only swap intake cams. all the 4v exhaust cams are the same. doesn't matter what 4v it is, they are all the same. the 96-98 just happen to have the largest intake, and machs......the smallest....
     
  11. g36 monkey

    g36 monkey Moderator Staff SN95 Supporter

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    good info in here, I like it
     
  12. copmagnet

    copmagnet Active Member

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    So uh....does this mean I have a cobra motor now?! OMG< IM GOING TO THROW COBRA BADGES ALL OVER MY CAR. spring perches!
     
  13. alex302

    alex302 Active Member

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    im going to have to look into this and do some research.
     
  14. copmagnet

    copmagnet Active Member

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    What is there to research? Its an easy 20 HP if you drop them in dot to dot. 25-30 with no loss of torque if you advance them 4 degrees with cloyes secondary timing gears. If you have any questions i'll give you my numbers. completely worth it.
     
  15. copmagnet

    copmagnet Active Member

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