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Old 01-12-2009, 10:31 PM   #1
CodyK 79
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T56 swap

Ok guys and gals im posting this b4 i hit the hay so i can have plenty of post before i go to school (if they dont call it off due to snow).

Anywho dad mentioed to me the other night about finding a 5spd tranny and putting in the vette. (1979, 350, 350trubo)

I got to looking around on here and seen more people had swapped the t56 from a lt1 camaro. This leaves dad and me with plenty of questions

1. Whats the best transmission to use?
2. 5 or 6 spd?
3. Do i have to have any kind of adapters?
4. What about clutch and break pedal assebly?
5. Hyrdaulic or mechanical clutch?
6. Do I have to make a new console?
7. Do I have to shorten the drive shaft?

Thanks ahead of time and pray for snow for me so I can sleep in.


oh and I did search and couldnt find exactly what I was looking for so dont dog me
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Old 01-12-2009, 10:49 PM   #2
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I have done an LT1 T56 swap into my 85 Camaro and an LS T56 into my 82 Corvette. So to the best of my abilities I will answer.

1. Whats the best transmission to use? LT1 style T56, get a 94 and newer one from a Camaro or TA.
2. 5 or 6 spd? See above
3. Do i have to have any kind of adapters? No
4. What about clutch and break pedal assebly? Find one from a manual transmission corvette. It will bolt right in.
5. Hydraulic or mechanical clutch? Hydraulic
6. Do I have to make a new console? Nope
7. Do I have to shorten the drive shaft? maybe not really a big deal though. Only costs around $75-$150

Here is some additional info. The T56 is the same length as the F-body style 700R4. Bowtie overdrives has a crossmember that will work for this application if you don't want to modify your crossmember. You can modify the stock shifter to come through the console in the stock location and you can get a 6 speed shift plate from Keisler. And lastly, if you pull back your carpet you will see a spot where you can drill a hole for the camaro style Hydraulic master cylinder. You will need to make an adapter so that the LT1 master cylinder is at the correct angle to the pedal.

Hope this helps.

Modified shifter



master cylinder drill location. (bottom left)

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Old 01-13-2009, 03:35 AM   #3
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You may find this useful:

http://temp.corvetteforum.net/c3/gwhite75/index.htm
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Old 01-13-2009, 07:04 AM   #4
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this may help also:

http://corvettec3.ca/tko.htm
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Old 01-13-2009, 07:34 AM   #5
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I like both of those installs, never seen the T56 bolted up with the different bellhousing. However, there are a bunch more parts to buy to do those, Bellhousing, manual linkage, tailshaft etc. If you get a drop out from an F-body all you need to do is modify or acquire a crossmember and get a set of pedals. And personally I like the Hydraulic clutch vs. the linkage. I guess I would try to minimize costs, but that is me.

rcracing1174, now you have three options. No matter what do the 6 speed, they are an absolute blast to drive!

oh and Ecklers sells the old school shifter handle that will work with the T56.

http://www.ecklers.com/product.asp?p...3&dept_id=1888
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Old 01-13-2009, 09:41 PM   #6
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Sorry about that guys I had to work

Okay I like the tko500/600 idea but frankley I work at a restaraunt (remember im 17) and I dont make that much money.

My idea is to find a wrecked lt1 fbody which I can take the tranny out of. After looking at prices I belive I would come out cheaper this way. My sis has a v6 camaro that needs some work so I could use some of the parts off of it on her car also.

I stoped in at a used car dealership today that a couple guys i know own it, theyre Vette guys (Im talkin 1000rwhp C5 and a lsx t56 c3). On their crossmember they just welded a small bar that comes off the crossmember for the tranny.

The pedals are what stump me, a new set with all the linkages is like 500 bucks, thas what I make in a month!!! Anyway i can find a set cheaper?? Anybody wanna donate lol????
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Old 01-13-2009, 11:20 PM   #7
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I got a whole pedal pack from a 69 for $100. And then transferred the pedals from the heavy cast iron housing of the 69 to my stamped steel housing on my 82. Just do some digging.

I found these in less than 2 min. here you go. BUY THESE

http://cgi.ebay.com/ebaymotors/68-69...Q5fAccessories

in case the mods are pissed about the ebay link here is the auction number. 290288742402

here is one more

http://cgi.ebay.com/ebaymotors/CORVE...Q5fAccessories

Item number: 120362412142

oh and if you don't want to cut up your crossmember, get one of these.

http://www.bowtieoverdrives.com/cata...php?ITEMID=679
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Old 01-14-2009, 12:29 AM   #8
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also, go to page 8 & 9 for the clutch master bracket.

http://www.hotrodlane.cc/PDFFILES/LS...toryscreen.pdf
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Old 01-14-2009, 11:42 AM   #9
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Ok you solved my pedal problem, thanks.

Now the big problem is finding a car, I guess Im juss gonna have to look around the junk yards to see what i can find.

Other then the tranny what all would I need from the donor fbody?
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Old 01-14-2009, 11:59 AM   #10
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Oh and for the shifter Im gonna find a hurst handle, not the shifter juss the handle and use it.

The bracket you made looks pretty simple and do you get through all 6 gears and reverse within the stock bezel?
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Old 01-14-2009, 02:20 PM   #11
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make sure that you get the clutch master/slave assembly from the donor, those things are spendy. The only thing that I don't know about are the electronics on the T56. There is the CAGS, Reverse lockout, backup lights, neutral safety and speed sensor. Your cars harness can handle the backup lights but I don't know what happens if you leave the rest of the sensors not connected.

I get everything through the stock bezel. Just set the handle up after everything is installed. Mine is pretty sloppy looking, my welder was on the fritz. I am going to redo it with a thicker piece of metal at some point.
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Old 01-14-2009, 03:04 PM   #12
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Quote:
Originally Posted by superpowers View Post
I have done an LT1 T56 swap into my 85 Camaro and an LS T56 into my 82 Corvette. So to the best of my abilities I will answer.

1. Whats the best transmission to use? LT1 style T56, get a 94 and newer one from a Camaro or TA.
2. 5 or 6 spd? See above
3. Do i have to have any kind of adapters? No
4. What about clutch and break pedal assebly? Find one from a manual transmission corvette. It will bolt right in.
5. Hydraulic or mechanical clutch? Hydraulic
6. Do I have to make a new console? Nope
7. Do I have to shorten the drive shaft? maybe not really a big deal though. Only costs around $75-$150

Here is some additional info. The T56 is the same length as the F-body style 700R4. Bowtie overdrives has a crossmember that will work for this application if you don't want to modify your crossmember. You can modify the stock shifter to come through the console in the stock location and you can get a 6 speed shift plate from Keisler. And lastly, if you pull back your carpet you will see a spot where you can drill a hole for the camaro style Hydraulic master cylinder. You will need to make an adapter so that the LT1 master cylinder is at the correct angle to the pedal.
Good info, just out of curiousity why the LT1 VS. the LS T56?

Also does anyone know if the 305 makes this swap more difficult?
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Old 01-14-2009, 03:51 PM   #13
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The discussion here so far has been generally about the mechanics of making the T56 swap. If the engine that will be in the car made 100HP, would it be prudent to be thinking about other parameters? Rear gearing, nature of the engine, amount of overdrive, tire diameters. Superpowers, I've seen your videos and write-ups. Your car doesn't lack for power or a modern flat torque curve. Will the rcracing engine be up to snuff to take advantage of 2 overdrive gears?

This isn't a knock on the T56, just a reminder that the whole system has to work well together and a lot of things need to be considered.

Good luck with the project. As I wrote elsewhere recently, putting in an OD tranny was the best thing I ever did to the car.
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Old 01-14-2009, 04:38 PM   #14
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I'm starting to change my mind on the t56, to expensive for my budget at what ive found. Im still looking though.

Has anybody done a 5spd swap, not the tk500 though thas way to expensive for my blood. I seen sombody had done a t5 swap but cant find it now. All i want is a manual transmission with OD.

I would settle with a 4spd if I could find one though as I dont drive the car that much, even though thas the reason I want an od so i can.
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Old 01-14-2009, 07:46 PM   #15
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Quote:
Originally Posted by rcracing1174 View Post
I would settle with a 4spd if I could find one though as I dont drive the car that much, even though thas the reason I want an od so i can.
Last fall I bought everything I needed for a M20 swap (all new parts) for less than $2k. Unfortunately life and then the weather got in the way. All the parts are taking up space in the basement until it gets warm enough to work in an unheated garage. The muncie is the easiest swap and is much more robust than the T5. The only down side is no overdrive.
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Corvettes are like fake tits, there is no point in paying big bucks if youre just going to stare at them.

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