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  1. #1
    Member supernatural400's Avatar
    Join Date
    Feb 2001
    1993 SuperNatural 400 #5 /99 LS1 Z28 N2O equipped


    Can anybody point me to any tech articles that explain this RPO code and what included in it

  2. #2
    Member ohsobad's Avatar
    Join Date
    Jan 2004
    chicago, Il
    1994, artic white, zo7, coupe, with a six speed.

    Default Rpo Zo7

    Seeing that your post was from 2001, and I don't know if you have ascertained the information that you were seeking, I'll go ahead and respond. The ZO7 code was introduced in 1991 when it was introduced with the adjustable suspension. What Set it apart was the stiffer springs, thicker sway bars, and I understand that the wheels are the same deminsions at all corners; 17x9.5. I have a 1994, so that is the set up on my car. The ZO7 cars were built to go racing, and GM wanted those with a Pro Solo License to obtain these cars so they would be used appropriatly. I don't know if many of them were used in the specific races, but Im glad that I lucked up and found one, as they are responsive cars. I did forget to mention that the ZO7 cars also have a quicker ratio steering box.

  3. #3
    Join Date
    Nov 2002
    New Jersey
    '94 blk/blk, Z07 6spd coupe


    Also, the Z07 option included the J55 brake package - larger/thicker front rotors (13" vs 12") and calipers specific for the rotors.

    "I enjoy working on it (almost) as much as driving it"

    '94 blk/blk Z07 6spd coupe

  4. #4
    Tuna's Avatar
    Join Date
    Mar 2003
    Mustang, OK
    '13 427 60th


    And the FX3 selective ride control shock system
    NCM Lifer - NCM Fighter Squadron
    2014 Caravan Captain - OK/TX Panhandle
    Central OK CC - Lone Star CC

  5. #5
    Join Date
    May 2002
    O'Fallon, MO USA
    1991 Bright Red Coupe Z-07 Automatic


    Z07 combined the z51, Fx3, J55 13" brakes, and oil cooler into a pakage called Adjustable Performance for $2550. Go to this link in the Action Center for a chart on all the suspensions in the C4;
    The 1991 was the stiffest of them all, as they softened it up in subsequent years. Its basically the same setup as the Corvette Callenge racing series cars sold in previous years.
    :s Bob

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