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TXGOOD
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MAY 17, 06:57 AM
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I`m thinking of swapping my 3-speed auto to a 4-speed Muncie.
The 88 coupe I have was once a manual car but was converted when it got a 4.9 and remained an auto
when the PO installed a 3.4.
I have looked and the manual pedal assembly was replaced with an auto assembly.
Considering the pedal ,assembly will have to be replaced what other parts will I need besides the obvious
shifter assembly, shifter cables and clutch related parts.
Thanks
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olejoedad
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MAY 17, 08:23 AM
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Some wiring changes under the dash and in the engine compartment related to the clutch start switch, solenoid signal and backup lights.
ECU programming.[This message has been edited by olejoedad (edited 05-17-2019).]
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TXGOOD
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MAY 17, 08:30 AM
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| quote | Originally posted by olejoedad:
Some wiring changes under the dash and in the engine compartment related to the clutch start switch, solenoid signal and backup lights.
ECU programming.
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I wondered about that.
Do you really need the clutch start switch.
I had cars years ago that had no switch for that.
You just didn`t try to start it in gear.
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Raydar
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MAY 18, 07:35 AM
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I have converted two cars to manual. I decided to forego the the clutch switch in both of them.
The most difficult aspects of the swap are hanging the pedals, and getting the clutch line into the front compartment. It's a chore to snake it past the front suspension/cradle, even with the tub removed.
Let's see... shifter, cables, pedal assembly, master/slave cylinders (I would recommend Rodney's) and clutch hydraulic line. Flywheel for your specific engine. (A manual flywheel for a 3.1 Cavalier will work.) Clutch assembly.
I have installed two of Rodney's master cylinders. Had to extend the adjustable banjo/pushrod on both of them. YMMV.
The manual trans starter wire is in a different place from the automatic, on C500. Hard to tell where it will be on your car, since a lot has been done to it.
I also still have the automatic column in my present car. (The manual column has a key release lever. You just have to be careful if you ever have to "key off" while moving. You don't want to lock the wheel.  )
Edit - 88 coupe to 4 speed? You'll need to run wires for the reverse light switch. The 4 speed had the switch on the shifter. The 5 speed and the automatic had it on the tranny.[This message has been edited by Raydar (edited 05-18-2019).]
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pmbrunelle
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MAY 18, 08:41 AM
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| quote | Originally posted by Raydar:
Edit - 88 coupe to 4 speed? You'll need to run wires for the reverse light switch. The 4 speed had the switch on the shifter. The 5 speed and the automatic had it on the tranny.
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To elaborate, the reverse lamps are powered by a wire that originates from the fuse box in front, then goes in the main wire bundle below the skeleton. Then, the wire goes out to the engine harness (where the wire is interrupted) via C500, and back into the body through C500, towards the taillights.
When I converted my automashit Fiero to Muncie 4-speed, I just cut the wire underneath the skeleton, and inserted the switch there. No need to run additional wiring. It's there already, almost.
From the known endpoints, I injected an AC current into the reversing lamps wire. Then, using a clamp-on ammeter, I identified the wire to splice into from the bundle of wires. Here are pics:
https://www.fieromontreal.c...86.msg34177#msg34177[This message has been edited by pmbrunelle (edited 05-18-2019).]
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Raydar
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MAY 18, 09:42 AM
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| quote | Originally posted by pmbrunelle:
To elaborate, the reverse lamps are powered by a wire that originates from the fuse box in front, then goes in the main wire bundle below the skeleton. Then, the wire goes out to the engine harness (where the wire is interrupted) via C500, and back into the body through C500, towards the taillights.
When I converted my automashit Fiero to Muncie 4-speed, I just cut the wire underneath the skeleton, and inserted the switch there. No need to run additional wiring. It's there already, almost.
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Great info! Thanks.
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TXGOOD
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MAY 18, 11:39 AM
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Thanks guys.
I`m thinking my car may still have the manual steering column because even with the key off the car will still
shift into any gear.
Isn`t there a rod on the auto column that keeps the car from going out of park when the key is turned off?[This message has been edited by TXGOOD (edited 05-18-2019).]
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olejoedad
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MAY 18, 12:28 PM
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There is a cable from the auto shifter that engages the ignition switch on the top of the column under the dash when the shifter is in PARK.
The manual column has a lever that prevents locking the column rotation and releasing the key, until the lever is depressed and the key turned to the OFF position.
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fierofool
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JUL 04, 11:23 AM
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A little late into this but something else that will be needed that I didn't see mentioned. Maybe I overlooked it, but while ordering from Rodney, order his 4-speed slave bracket.
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Dave E Bouy
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JUL 04, 07:49 PM
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x 2 on the Rodney shift cable bracket. Great product!
DV
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