4v heads on a 2v

Discussion in 'SVT Tech Forum' started by carbed 85 gt, Dec 8, 2003.


  1. carbed 85 gt

    carbed 85 gt New Member

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    Ive got a 02 gt and will have some money for mods i wa thinking blower but would like to convert to cobra na way could 4v heads bolt on to a 2v and wht extra parts would be needeeed
     
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  2. TripleBlakSnake

    TripleBlakSnake New Member

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    Dont waste your time, buy a 4V motor
     
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  3. carbed 85 gt

    carbed 85 gt New Member

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    how about NOOOOO. I already have a block to work with if it fits Im not spending 3k on a used cobra engine. Your post didnt help one bit I asked if it could be done.. read my post :mad:
     
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  4. Solid Snake

    Solid Snake Banned

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    THat kind of attitude won't get you far, I'll tell you that. He is right anyway. You would have to machine the block for the heads to work. That, plus a bunch of other things would run you MUCH MUCH MUCH more than simply dropping in the complete 4V motor.
     
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  5. RedGTvert

    RedGTvert Founding Member

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    He would not have to machine the block to make 4V heads work on an Iron block. The '03 Cobra basically uses a 2V block.

    There are numerous things that will be needed to make it work, but I agree with one poster above, it will be easier and cheaper to buy a used 4V. Have you looked at the cost of 4V heads? They are not cheap.
     
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  6. svtguy

    svtguy Founding Member

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    Sell your GT motor & buy a Cobra motor. They share nothing in common except displacement. Also if your looking to build up a motor 400hp+ the 4v Cobra motor is much more robust, with it's forged crank & high quality AL block.
     
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  7. sinisterblack98

    sinisterblack98 Sometimes I just lay on my garage floor and look u Founding Member

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    Totally possible, no machining required if you don't mind a blower friendly 7.85:1 (or 8:1?) compression ratio. Worth it...not IMO...by the time you get heads, intake, computer or re-flash, and ancillary parts not to mention you should do a forged crank (the factory did).

    If I would have had access to cheap parts, I was going to do this same project with a blower to my GT. Kar Kraft sells whole 4V crate motors for around $4500 bucks and you gain an aluminum block.

    Or do what I did...just buy a Cobra!
     
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  8. AikiRonin

    AikiRonin Founding Member

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    Maybe if you were starting from scratch it might be more cost effective to just buy a cobra motor...but what if you are already forged....and have the same cobra accessories....say like my Bullitt?....:O) you can extend your stock harness and have a chip burned for the PCM...or I suppose you could buy a Cobra PCM and harness.

    John
     
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  9. Hissmann

    Hissmann Founding Member

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    If you were to use the heads from a 96-01 Cobra you could have seriouse problems. Aluminum Heads/Iron Block. Under heat and stress the two different metals react differently.
     
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  10. AikiRonin

    AikiRonin Founding Member

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    Ok...so what about 03' heads? Or Navi heads....or maybe even Mach heads?
     
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  11. Hissmann

    Hissmann Founding Member

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    03/04 heads would be your best bet.
     
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  12. 5.0's 4 ever

    5.0's 4 ever The #1 Stunna Founding Member

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    Aluminum heads on an iron block have been a proven reliable combo for a while now. The 4.6 SOHC, 03 Cobra, 5.4 SOHC, 5.4 DOHC, and with the pushrod motors.
     
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  13. Solid Snake

    Solid Snake Banned

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    The 2V SOHC utilizes aluminum heads and iron blocks. 03 Cobra utilizes aluminum heads and iron blocks :scratch:
     
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  14. 97cobra281

    97cobra281 Founding Member

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    Look in the Ford racing catalog for 2004, they're getting rid of complete brand new mach 1 and cobra motors for fairly cheap.
     
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  15. AikiRonin

    AikiRonin Founding Member

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    Anyone think of anything else?

    03' Cylinder Head ASSY W/Valves LH P/N: 2C5Z-6049-FA
    03' Cylinder Head W/Valves Assy RH P/N: 2C5Z-6049-GA
    03' Lower Intake Assy P/N: 2R3Z 9424-BB
    03' Upper Intake Assy P/N: 3R3Z 9424-DA
    Throttle Cable P/N: 1R3Z9A758CA
    Cruise Cable P/N: XR3Z9A825BA
    Over flow hose P/N: F8ZZ8C350AA
    Stat Housing P/N: F6ZZ8592BB
    Stat housing P/N: XR3Z8K528AA.
    Lower Hose (Rad-Housing) P/N: 7ZZ8K576AB
    Lower Hose (block-Housing) P/N: F7ZZ8K576AB
    Upper Rad Hose P/N: F7ZZ8260AA.
    Bypass hose P/N: F7ZZ8A593AB.
    Timing Chain Cover P/N: 2R3Z-6019-BA

    John
     
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