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250 GTO Cam Specification

Discussion in 'Vintage (thru 365 GTC4)' started by pma1010, Jan 17, 2004.

  1. pma1010

    pma1010 F1 Rookie

    Jul 21, 2002
    2,559
    Chicago
    Full Name:
    Philip
    I wonder if one of you knows this. I've just read a review from the early 60s of a road test of a 250 GTO. They comment on the 6 Webers (Tanner says 38s, article says 42s), 9.8:1 CR and an engine that is soggy below 3000, and goes like a missle above 5000 rpm. Does anyone know the cam timing and durations on this car? Just curious
    Philip
     
  2. pma1010

    pma1010 F1 Rookie

    Jul 21, 2002
    2,559
    Chicago
    Full Name:
    Philip
    As a reference, I believe the 250 LM Berlinetta has cam timing as follows:
    Intake Op 46 BTDC, Cl 75 ABDC
    Exhaust Op 70 BBDC, Cl 40 ATDC
    Philip
     
  3. snj5

    snj5 F1 World Champ

    Feb 22, 2003
    10,213
    San Antonio
    Full Name:
    Russ Turner
    the cam timing info I have for a 250 gto is:

    intake o/c : 42 btdc/72 abdc duration 294

    exhaust o/c : 70 bbdc/40 atdc duration 290

    overlap 82

    My specs for a 250 GT SWB have longer durations:

    intake: 44/75 duration 299
    exhaust: 74/43 duration 297
    overlap 83

    hth
    rt
     

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