Difference in 355 2.7, 5.2 & f1 heads? | FerrariChat
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Difference in 355 2.7, 5.2 & f1 heads?

Discussion in '348/355' started by plugzit, Jan 3, 2011.

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  1. plugzit

    plugzit F1 Veteran
    Silver Subscribed

    Dec 1, 2004
    7,789
    Redondo Beach, CA
    Full Name:
    Bruce Bogart
    #1 plugzit, Jan 3, 2011
    Any difference in these basic heads? Will they interchange? Difference in valve covers? Will they interchange?
     
  2. Ricambi America

    Ricambi America F1 World Champ
    Sponsor Owner

    Dec 7, 2003
    16,465
    Winston Salem, NC
    #2 Ricambi America, Jan 3, 2011
    After motor 38150, they were all the same. I think (but cannot confirm) even the early ones will work, but the spark plug cover bolt alignment is different.
     
  3. SKUSA

    SKUSA Formula Junior

    Dec 6, 2009
    476
    Norcal
    #3 SKUSA, Jan 3, 2011
    Where can I find the motor number on my 355?
     
  4. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
    37,288
    Cowboy Capitol of the World
    Full Name:
    Brian Crall
    #4 Rifledriver, Jan 4, 2011
    Valve covers are machined to the head and should never be seperated. If you do you will never get it oil tite again.
     
  5. SKUSA

    SKUSA Formula Junior

    Dec 6, 2009
    476
    Norcal
    #5 SKUSA, Jan 4, 2011
    Brian is it true that the 2.7 have a better air flow (esp early 2.7) than the 5.2 which were redesigned because the air flow was large enough on the early heads that they had failures with the oil channels.
     
  6. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
    37,288
    Cowboy Capitol of the World
    Full Name:
    Brian Crall
    #6 Rifledriver, Jan 4, 2011
    Early 95 heads had a very slight edge in flow. It was changed mid year.

    Your car should have those heads.
     
  7. fatbillybob

    fatbillybob Two Time F1 World Champ
    Consultant Owner

    Aug 10, 2002
    29,224
    socal
    #7 fatbillybob, Jan 4, 2011
    There was a rumor that some early 95 heads were "bad" and replaced under warrantee and found there way into a few challenge cars somehow.
     
  8. GerryD

    GerryD Formula 3

    May 5, 2010
    2,444
    North of TO
    Full Name:
    Guido
    #8 GerryD, Jan 4, 2011
    not far from the oil filer mount.
     

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