Difference between 355 cylinder heads (ABS and F1)) | FerrariChat
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Difference between 355 cylinder heads (ABS and F1))

Discussion in '348/355' started by johan6504, Aug 20, 2010.

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  1. johan6504

    johan6504 Formula 3

    Jun 28, 2005
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    #1 johan6504, Aug 20, 2010
    fond cylinder heads for a 355 but it is from a manual car and when looking at Eurospares parts catalog it seems to be two different heads. One for ABS and F1 cars end one for non ABS F1 cars. Can anyone shed any light on this?
     
  2. brian.s

    brian.s F1 Rookie
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    Nov 3, 2003
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    #2 brian.s, Aug 20, 2010
    I've only noticed the different camshaft, thought the castings are interchangeable. i still have a pair of used, need refresh, from an 98 F1 here.
     
  3. johan6504

    johan6504 Formula 3

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    #3 johan6504, Aug 20, 2010
    I was thinking about having an extra set to port and remap after next major, but need to understand what the differences are before buying a set...
     
  4. enginefxr

    enginefxr Formula 3

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    #4 enginefxr, Aug 20, 2010
    The ABS/F1 heads have a vacuum pump driven off the intake cam on the left cylinder head.
    The castings are the same.
     
  5. johan6504

    johan6504 Formula 3

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    #5 johan6504, Aug 20, 2010
    So does that mean they are interchangeable?
     
  6. enginefxr

    enginefxr Formula 3

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    #6 enginefxr, Aug 20, 2010
    Yes. The difference is in the bolt-on vac. pump and the intake cam has a lever on the back to drive the pump. Non ABS heads just have a block off plate.
    Do you need them ported? ;)
     
  7. johan6504

    johan6504 Formula 3

    Jun 28, 2005
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    #7 johan6504, Aug 20, 2010
    Ported, probably... Not sure yet :) Long winter in Sweden so I need something to do...
     

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