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Old May 15, 2013 | 10:33 PM
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Default automatic to Manual

how difficult is it to switch my automatic 84 c4 to a 5 speed manual transmission?
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Old May 15, 2013 | 10:40 PM
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its not terribly difficult if you have experience working on cars. you will need the following parts, but may not be limited to. this is just from memory:

-manual transmission
-clutch kit with pilot bearing
-clutch master and slave cylinders
-clutch hard line and hose
-manual transmission brake and clutch pedal set
-manual trans shifter and linkage
-manual trans driveshaft
-correct flywheel
-floor section for the shifter form a manual transmission Corvette
-shift **** and center console plate with shift boot from a manual trans equipped Corvette

one of the most difficult parts to the install is cutting out the floor section under the shifter and grafting in the section from a manual transmission equipped Corvette. the mounting and linkages are different and therefore the floor section must be grafted in with SMC.
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Old May 15, 2013 | 10:52 PM
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Originally Posted by mazdaverx7
its not terribly difficult if you have experience working on cars. you will need the following parts, but may not be limited to. this is just from memory:

-manual transmission
-clutch kit with pilot bearing
-clutch master and slave cylinders
-clutch hard line and hose
-manual transmission brake and clutch pedal set
-manual trans shifter and linkage
-manual trans driveshaft
-correct flywheel
-floor section for the shifter form a manual transmission Corvette
-shift **** and center console plate with shift boot from a manual trans equipped Corvette

one of the most difficult parts to the install is cutting out the floor section under the shifter and grafting in the section from a manual transmission equipped Corvette. the mounting and linkages are different and therefore the floor section must be grafted in with SMC.
doesnt seem to bad what type of trans did you put in yours?
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Old May 15, 2013 | 11:17 PM
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Honestly? Change titles. Much easier. Sell it and buy the car you really want.
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Old May 15, 2013 | 11:41 PM
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helped build and convert an 84 Z51 auto road car into an autocross machine with a 383 and a 4+3. the dough nash T10 is a really solid transmission.
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Old May 15, 2013 | 11:42 PM
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Originally Posted by Frizlefrak
Honestly? Change titles. Much easier. Sell it and buy the car you really want.
im really considering that.
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Old May 16, 2013 | 12:01 AM
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Originally Posted by Frizlefrak
Honestly? Change titles. Much easier. Sell it and buy the car you really want.
And a lot cheaper.
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Old May 16, 2013 | 01:17 AM
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The C-beam needs to be changed. It might be possible to drill the old one -- I'm not sure about that. The distance from the trans tailshaft to the rear axle is different.

I think the driveshaft also needs to be shortened.

As a side note, automatics have a Dana 36 and manual trans cars have a Dana 44 rear axle.
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Old May 16, 2013 | 03:56 AM
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Originally Posted by 84VetteMan205hp
how difficult is it to switch my automatic 84 c4 to a 5 speed manual transmission?
http://members.cisdi.com/~anesthes/f-car-t5/

Originally Posted by Cliff Harris
The C-beam needs to be changed.
The distance from the trans tailshaft to the rear axle is different.
Not if swapping in a C4 trans like the 4+3 ; the C-Beam and driveshaft only change if doing a diff swap

Originally Posted by Cliff Harris
As a side note, automatics have a Dana 36 and manual trans cars have a Dana 44 rear axle.
Except in the OP's 1984 where the D36 was the only available diff
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Old May 16, 2013 | 04:05 AM
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Originally Posted by Frizlefrak
Honestly? Change titles. Much easier. Sell it and buy the car you really want.


I've done Mustangs, RX7's, several others - the C4 is a bit more work for sure.

This is a case where it is indeed easier to change titles than transmissions. Unless you are emotionally attached to your car rounding up all the parts (both major and minor) just doesn't seem worth it both in terms of time and money.
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Old May 16, 2013 | 07:17 AM
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Originally Posted by Frizlefrak
Honestly? Change titles. Much easier. Sell it and buy the car you really want.
Been discussed at leangth. Bottom line easier and less costly to sell what you have and buy what you want.
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Old May 16, 2013 | 09:36 AM
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Originally Posted by 84VetteMan205hp
im really considering that.
Do it. Driving is much more fun than wrenching. OR....find someone who has a manual car and wants and auto and work out a trade.
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Old May 17, 2013 | 09:50 PM
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will a zf6-speed from an 89 fit?
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Old May 17, 2013 | 11:21 PM
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Yeah it will fit. Here's something local... http://phoenix.craigslist.org/nph/cto/3807022575.html

You should be able to buy an 89-95 6spd for between $5k and $10k with a little looking, most on the lower side, they aren't as popular as you might think. Remember, if you have trouble with a 4+3 or especially a ZF6, you have BIG trouble ($$$$$) the cost of converting to a
ZF6 would be between $3500-$5000 not counting the Dana 44 (add about $1600)

Last edited by zr1fred; May 17, 2013 at 11:25 PM.
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Old May 18, 2013 | 12:27 AM
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Originally Posted by zr1fred
Yeah it will fit. Here's something local... http://phoenix.craigslist.org/nph/cto/3807022575.html

You should be able to buy an 89-95 6spd for between $5k and $10k with a little looking, most on the lower side, they aren't as popular as you might think. Remember, if you have trouble with a 4+3 or especially a ZF6, you have BIG trouble ($$$$$) the cost of converting to a
ZF6 would be between $3500-$5000 not counting the Dana 44 (add about $1600)
so basicaly what your saying is converting my original automatic 1984 with the Dana36 (i think) to a manual zf6 would be between $3500-5k?
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Old May 18, 2013 | 12:28 AM
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and whats so good about the Dana 44? why does everybody hate the Dana 36?
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Old May 18, 2013 | 12:32 AM
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Originally Posted by Frizlefrak
Honestly? Change titles. Much easier. Sell it and buy the car you really want.
now i think about it, i probably wouldn't get much for this car it has some fiberglass damage and i don't know whats hiding under the paint.
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Old May 18, 2013 | 01:06 AM
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Originally Posted by 84VetteMan205hp
now i think about it, i probably wouldn't get much for this car it has some fiberglass damage and i don't know whats hiding under the paint.
Right. So if you put another $2000 into swapping the transmission over to a manual, guess what? You'll be $2K poorer, and still won't get a penny more when (not if) you sell it.

Unload it, and buy the car you really want.
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Old May 18, 2013 | 01:07 AM
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Originally Posted by 84VetteMan205hp
and whats so good about the Dana 44? why does everybody hate the Dana 36?
There's nothing wrong with the Dana 36. The Dana 44 will withstand more torque.
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Old May 18, 2013 | 01:27 AM
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Originally Posted by Frizlefrak
There's nothing wrong with the Dana 36. The Dana 44 will withstand more torque.
Not hating, just pointing out that if you buy a factory ZF6 car you get the Dana 44. For normal applications the Dana 36 will work just fine. Whatever you get for your car now will be more than you'll get for it with a manual trans conversion.

Last edited by zr1fred; May 18, 2013 at 01:30 AM.
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