Los Angeles Built underbody color

Discussion in 'Body Restoration' started by Racytracy, Apr 28, 2020.

  1. Racytracy

    Racytracy Member

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    I know this subject has been covered over and over...
    My turn to look into it. This 1971 Z28 is built in LA
    Definitely not a burnt brown/ reddish primer. It looks to be flat or flattish black for sure.
    My question comes from witnessing the tear down and find what appears to be the Nevada Silver body color on the frame rails under the rear sway bar mounts.
    Paint process records I've read say the bodies were sprayed at the factory in those days, not dunked in LA.
    I believe the flat black primer was known to be the color in LA built cars.
    so steps were to paint the primer, paint the body and then spray undercoat? Any experts can confirm this?
    If so why is body color under these areas of the car?
    The underside of this Z is pretty spotless and was parked for almost 40 years.
    Pic attached is the floors
    Reddish color is natural rust, not red primer
    I’ll post a pic of silver color under the rear brackets next
     

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  2. badazz81z28

    badazz81z28 Veteran Member

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    My 70 LA car appears to be black underneath. A lot of undercoating so it’s hard to tell. I don’t believe it’s red oxide like the Norwood cars. Your pic is surface rust. Based on my interior, I think they may have put nothing under the car.
     
  3. x77-69z28

    x77-69z28 Veteran Member

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    Van Nuys cars were black. Norwood had a dip tank that the bodies went through. It was a red oxide rust inhibitor.
     
  4. l16pilot

    l16pilot Veteran Member Lifetime Gold Member

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    In addition, if the car is an original code 13 paint, then the Nevada Silver overspray is normal. After the body color went on, the wheel well areas were shot with undercoating, but did not necessarily cover up the body-color overspray.
     
  5. badazz81z28

    badazz81z28 Veteran Member

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    Did the entire car get dipped? That would probably mean Norwood cars would be preferred for rust prevention not only on the bottom, but nooks and crannies inside the cab?
     
  6. x77-69z28

    x77-69z28 Veteran Member

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    Yes. There is video somewhere of them going through the tank
     
  7. Ihada70Z28B4

    Ihada70Z28B4 Veteran Member

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    At some point Van Nuys started using a dip tank, because my '80 was black not red oxide and definitely dipped. I know because I stripped every inch inside and out to metal. I know this is after the time period being discussed,but I wanted to add this info anyways.
     

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