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engine parts interchangability

Discussion in '1994-2004 V6 Mustang Tech' started by parentevan, Sep 9, 2002.

  1. parentevan

    parentevan New Member

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    I have a 3.8 out of an 89 t-bird and I understand that it is the exact same engine as the 3.8 mustang 94-? is this true? and what year mustangs have this engine? Also, what internal parts are interchangable in the 4.6 to the 3.8 I think the pistons are. Set me straight here! I gots to know!
     
  2. parentevan

    parentevan New Member

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    anyone want to help?
     
  3. musclestang721

    musclestang721 Senior Member

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    I dont know for sure but will try to help, the 89 3.8 is basically the same as the 94-98 and shares some simularities to the 99+. they were upgraded in 99. I dont think much from a 4.6 will fit the 3.8
     
  4. SteveC

    SteveC Well-Known Member

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    The older 3.8's are very similar, but have slight differences in rod and piston measurements. But the block is basically the same.

    No parts from the 4.6 rolling assembly will work in a 3.8. Total different style/ class of engine.
     
  5. rick0636

    rick0636 New Member

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    The heads changed in 96, went with a smaller stem valve with a conical spring, thats where their 5 hp came from I hear.
     
  6. RGR...

    RGR... New Member

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    Wants a V6!!!
    your main source of parts interchange will be 5.0 style stuff
    (valve train) and 351 W and Cleveland rods, etc. Pistons
    are 3.81" standard bore, unique to the 90* V6 family.
     
  7. parentevan

    parentevan New Member

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    so, I could use 351w and cleveland connecting rods and 5.0 valves and such?
     
  8. RGR...

    RGR... New Member

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    Wants a V6!!!
    but U can probably get that stuff from me cheaper
    than U can buy it, and I know exactly what works.

    E-mail me if interested.
    [email protected]
    Plus I have lots of DIY free info :)
     
  9. Flex

    Flex Kicker of Arrogant Asses

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    It is the 4.2, not the 4.6, that shares the same family as the 3.8. All injected 3.8's from 89-98 are the same exept for minor differences. Try this link:

    http://www.babcox.com/editorial/ar/ar90134.htm


    Good for info on parts interchange etc.