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VIN 9 Trans Identification

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  • VIN 9 Trans Identification

    1983 - OZ, blue tag
    1984 - OZ, yellow tag
    1985 - OZ, pink tag
    1986 - KZF, blue tag
    1987 - KZF, yellow tag


    VIN 9 cars use a 4 speed overdrive TH-2004r with different shift points due to different governors and also have a higher 2400RPM stall D5 converter (GM# 8653400 with CBBF on the paper tag, 2050RPM stall with 14 blade stator) than the stock VIN Y TH-2004r transmission.
    D5 Torque converter PN's
    '83-'85 OZ & BQ: 8634993
    '86-87 KZF: 8642965 (BRF 8656903)
    There were two different Transmissions offerered for VIN 9 vehicles
    1983-85 has code OZ on the trans tag while '86-'87 reads KZF. These transmissions have a wide open throttle shift point (WOT) of 4800rpm than the VIN Y TH2004R which has a WOT shift point of 3000rpm.

    The gear ratios: 1st: 2.74, 2nd: 1.57, 3rd: 1.00 and 4th (OD): 0.67

    Governor:
    BRF, BQ and CZF GN/Monte SS TH2004Rs have WOT 1st gear 5200 rpm upshift governor, part#8655976, WOT 1st gear upshift on OZ and KZF Hurst/442 is 4800 rpm part# 8634982 vs. 3000 rpm stock.

    Shift points:
    BRF, BQ and CZF:
    1-2: 5200 rpm
    2-3: 4900 rpm
    3-4: 4400 rpm
    OZ and KZF:
    1-2: 4800 rpm
    2-3: 4500 rpm
    3-4: 4000 rpm

    Valve Body:
    1983 OZ: GM# 8639918
    1984 OZ: GM# 8639131
    1985 OZ: GM# 8639493
    1986 & 87 KZF: GM# 8657286
    Lightning Rods repair service:CLICK HERE
    Seller Feedback:CLICK HERE
    1988 H/OCA Advisor
    88 H/O #1 of 4
    88 CSC White/Claret - T-tops
    88 H/O Triple Black
    87 442 Black/Gray - T-tops
    85 442 White/Blue - T-tops
    85 442 White/Blue - T-tops
    85 442 White/Claret - T-tops
    85 442 White/Sage
    84 H/O Aero Commemorative #2199 - Sunroof
    83 H/O #2400 Sand Gray - Sunroof
    83 H/O #1607 Sand Gray - T-tops
    83 H/O #727 Maple
    "Keep them Rockets lit!"

  • #2
    I am attempting to identify which transmission I have but do not understand this post...

    Comment


    • #3
      Tag at the back of the trans on the passengers side by the tail shaft has this information.
      Unless you have a 442 or Hurst these do not apply.
      VIN Y cars had OG, OM or KCF.

      BQ (86-87 GN), OZ (83-85 VIN9), CZF (Monte SS), KZF (86-87 VIN9) and BRF(84-85 GN) are the good ones.
      Lightning Rods repair service:CLICK HERE
      Seller Feedback:CLICK HERE
      1988 H/OCA Advisor
      88 H/O #1 of 4
      88 CSC White/Claret - T-tops
      88 H/O Triple Black
      87 442 Black/Gray - T-tops
      85 442 White/Blue - T-tops
      85 442 White/Blue - T-tops
      85 442 White/Claret - T-tops
      85 442 White/Sage
      84 H/O Aero Commemorative #2199 - Sunroof
      83 H/O #2400 Sand Gray - Sunroof
      83 H/O #1607 Sand Gray - T-tops
      83 H/O #727 Maple
      "Keep them Rockets lit!"

      Comment

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