1974z28

Discussion in '1974 Specific' started by vernonwright, Sep 25, 2013.

  1. vernonwright

    vernonwright Veteran Member

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    What makes this car so spical. Do they have big valve heads what is it
     
  2. ronzz572

    ronzz572 Veteran Member Lifetime Gold Member

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    Yes the 74 z28 has the big valve heads, It was the last year for it ending the z28 muscle car engine era in the early 70s. Also it had a big change in the exterior body styling and adding the big bumpers while retaining the unique 1970 to 74 back window.
     
  3. vernonwright

    vernonwright Veteran Member

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    This guy says because mine has ac it is not a real z28 every thing on mine matches and comes
    Back. To +

    Z28. If I get the info again will some one check it for me thank you vernon
     
  4. gregh

    gregh Moderator Staff Member Lifetime Gold Member

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    I thought it was because of the small back window??
     
  5. Kamikaze

    Kamikaze Veteran Member Lifetime Gold Member

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    Air conditioning became an option beginning in 1973 when the engines were built with hydraulic lifters instead of solids from previous years.
     
  6. Jet

    Jet Veteran Member Lifetime Gold Member

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    Yes, it had the big-valve heads, but the casting was the 882, not the greatest by any means. I sold the heads off of my car back in the mid-1990s, and they had 2.02/1.60s.
     
  7. Z28PILOT

    Z28PILOT Veteran Member Lifetime Gold Member

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    See Sean's thread

    1974 Camaro uniqueness

    Your vin should have a " T" in it , if it was a factory Z28 optioned car......pretty easy to check :)
     
  8. Z28PILOT

    Z28PILOT Veteran Member Lifetime Gold Member

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    fYI..The early 882 heads ...used in 1974 ....were still the same good casting , the exhaust webbing passages were the same thick ones as previously. These didn't crack , compression was still same 9:1 as in 72 , they were fine for the technology of the day.

    The latter 70's corvette L82 heads were the poor ones ....casting changed many cracked
     
  9. twozs

    twozs Veteran Member

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    The 74 " special preformance engine Z28 " had 4 bolt mains , forged crank and pink rods and( I think) forged aluminum pistons . It only lacked adequate compression . It was a really stout foundation . BTW my 73 Z28 has A/C and it's real
     
    Last edited: Sep 26, 2013
  10. Jet

    Jet Veteran Member Lifetime Gold Member

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    Talking performance-wise, not casting-wise.
     

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