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Old 01-28-2001, 09:06 AM
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cth350 cth350 is offline
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Join Date: Dec 2000
Location: Long Island, NY
Posts: 3,651
Armed with the following from a junk yard...

- An automatic transmission from the same motor type.
If possible, the same model year
- The torque converter
- The drive shaft (from same body type w/motor-type)
- The rear transmission support
- Flex plate and ring gear
- Brake pedal assembly
- All the old bolts (Torque cvtr to flywheel & tranny to motor)
- The shift linkage, including the gear selector
- Any/all wires that connect the tranny to the rest of the car.

With the TDM, ETM, chassis & engine manuals for your car at your finger tips. The job isn't too difficult.

1. Take your old tranny out (remove starter & drive shaft too).
2. Remove the old flywheel and ring gear & pilot bearing.
3. Have A/T starting ring gear balanced to the old flywheel.
4. Attach starting ring gear to your motor.
5. Attach the new tranny.
6. Bolt torque converter to the motor.
7. Attach linkages.
8. Attach drive shaft.
9. Wire in the electrical connections.
10. Put back the starter & the exhaust.
11. Switch over the brake pedal assembly.

The big pitfalls, are steps 3, 5, 8 & 9.

- The engine was balanced as a unit. A good shop should be able to maintain the balance. The whole engine may need balancing again.

- To attach the new tranny, you are levitating a 100 pound block of alloy steel over your head. This is not a driveway operation.

- The drive shaft lengths vary. Cross your fingers that this will go fine. If not, you will have to have the shaft lengthened or shortened and then balanced.

- The neutral saftey switch wiring is critical. Also it controls your backup lights. If you're real lucky, it's the same wire connection harness as the one in your car now. I doubt you'll be that lucky.

BTW, how is the clutch cylinder fed fluid?

While you're doing this, lots of parts can/should be replaced.

- New bolts for the flex-plate. You MUST not reuse the old ones.
- Check the starter's pinion & the new ring gear. Are they worn? Should they be replaced?
- Have the transmission resealed. If it's a junkyard unit, have it pressure tested too.
- Replace the shift linkage bushings. They're cheap.
- Consider a new torque converter rather than a high milage junkyard one. Ask a tranny specialist.

Above all else, research the job. Read the service books. The Technical data book has all sorts of tables that compare things. Find something that doesn't match between your donor car(s) and your own.

Test fit as many components as possible as soon as possible. If you can swap out the shifter before removing the transmission, do so. It just helps verify that you've got the right part.

Two last words of wisdom. Most likely, you are going to want to swap out the differential too. The gear ratio will be wrong. Also, watch your speedometer and odometer. Either they will be fine with the tranny swap or they will only be fine when you swap the tranny & the rear. Have the junkyard one be made available.


PS. All of the parts removed from your car should be put aside so that you can sell somebody (like me) an auto-manual swap kit.
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