Chevrolet Nova/ChevyII 1962-1979

Transmission

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REMOVAL & INSTALLATION



Powerglide
  1. Disconnect the negative battery cable.
  2.  
  3. Raise and safely support the vehicle, then drain the engine oil into a suitable container.
  4.  
  5. Disconnect the oil cooler and vacuum modulator lines and the speedometer drive cable from the transmission. Fasten the lines out of the way.
  6.  
  7. Detach the manual and throttle valve control level rods from the transmission.
  8.  
  9. Disconnect the driveshaft.
  10.  
  11. Install a suitable transmission lifting device.
  12.  
  13. Disconnect the engine rear mount from the transmission extension, then remove the transmission support crossmember.
  14.  
  15. Remove the converter underpan, then scribe the flywheel-to-converter position for assembly purposes. Remove the converter-to-flywheel attaching bolts.
  16.  
  17. Support the engine at the oil pan rail with a jack or other suitable brace capable of supporting the engine weight when the transmission is removed.
  18.  
  19. Lower the rear of the transmission slightly so that the upper transmission housing-to-engine attaching bolts can be reached by using a universal socket and a long extension. Remove the upper bolts.
  20.  

Make sure the distributor does not hit the firewall when lowering the transmission.

  1. Remove the remaining transmission-to-housing bolts.
  2.  

Watch the converter when moving the transmission rearward. If it does not follow the transmission, pry it free of the flywheel before proceeding.

  1. Separate the transmission from the vehicle by moving it slightly to the rear and downward, then remove it from beneath the car and transfer it to a workbench.
  2.  


WARNING
Use some sort of holding strap to keep the converter from falling out of the transmission during transmission removal and handling.

  1. Installation is the reverse of the removal procedure.
  2.  

Turbo Hydra-Matic 250
  1. Disconnect the negative battery cable.
  2.  
  3. Disconnect the detent downshift cable from the carburetor.
  4.  
  5. Make sure the parking brake is off. Raise and safely support the vehicle.
  6.  
  7. Remove the drive shaft from the vehicle.
  8.  
  9. Disconnect the following components from the transmission:
  10.  
    1. Speedometer cable
    2.  
    3. Detent downshift cable
    4.  
    5. Modulator vacuum line
    6.  
    7. Fluid cooler lines
    8.  

  11. Unfasten the shift control linkage from the transmission.
  12.  
  13. Place a transmission jack underneath the transmission.
  14.  
  15. Unfasten the rear transmission mounting pads at the rear frame crossmember.
  16.  
  17. Remove the two bolts at either end of the crossmember, then remove the crossmember.
  18.  
  19. Remove the converter access plate.
  20.  
  21. Unfasten and remove the bolts securing the converter to the flexplate.
  22.  
  23. Carefully lower the transmission, so that the jack just barely supports it.
  24.  
  25. Remove the bolts which secure the bell housing to the engine.
  26.  
  27. Remove the oil filler tube from the transmission.
  28.  
  29. Bring the transmission back up to its normal position and then support the engine with a jack.
  30.  


WARNING
While the transmission is being lowered, either use a tool to retain the converter in the housing or keep the rear of the transmission below the front. Do NOT allow the converter to fall out.

  1. Slide the transmission toward the rear of the car and away from the eingine. Carefully lower, then remove the transmission.
  2.  
  3. Installation is the reverse of the removal procedure. Make sure to keep the following points in mind:
  4.  
    1. Before installing the flexplate-to-converter bolts, be sure that the attaching lugs on the converter are flush with the flexplate. Try rotating the converter by hand; it should turn freely.
    2.  
    3. Hand-start all 3 stud bolts and finger-tighten them. Then, final-tighten all bolts.
    4.  
    5. After installation, adjust the linkage and check the fluid level.
    6.  


Turbo Hydra-Matic 350 and 400
  1. Disconnect the negative battery cable.
  2.  
  3. Make sure the parking brake is off.
  4.  
  5. Raise and safely support the vehicle, then drain the engine oil into a suitable container.
  6.  
  7. Remove the drive shaft from the vehicle.
  8.  
  9. Disconnect the following components from the transmission:
  10.  
    1. Speedometer cable
    2.  
    3. Detent downshift cable (Turbo Hydra-Matic 350)
    4.  
    5. Electrical lead-to-case connector (Turbo HydraMatic 400)
    6.  
    7. Modulator vacuum line
    8.  
    9. Fluid cooler lines
    10.  

  11. Unfasten the shift control linkage from the transmission.
  12.  
  13. Place a transmission jack underneath the transmission.
  14.  
  15. Remove the following components:
  16.  
    1. Crossmember
    2.  
    3. Converter underpan
    4.  
    5. Converter-to-flywheel bolts
    6.  

  17. Loosen the exhaust pipe-to-manifold bolts.
  18.  
  19. Lower the transmission until the jack is barely supporting it. Be careful that the distributor on the V8 engine is not forced against the firewall.
  20.  
  21. Remove the transmission-to-engine mounting bolts and the oil filler tube.
  22.  
  23. Raise the transmission to its normal position. Support the engine with a jack. Slide the transmission rearward and then down. Use a strap to hold the converter to the transmission or keep the rear of the transmission down to avoid losing the converter.
  24.  
  25. Installation is the reverse of the removal procedure.
  26.  

 
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