Question: If you swap from a t5 to a t56...
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Joined: Apr 2009
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From: Spokane, Wa.
Car: 88 Camaro
Engine: 416 Stroker LS
Transmission: Magnum F
Axle/Gears: 4.11
Question: If you swap from a t5 to a t56...
Lets say someone in a 88 base camaro swaps his t5 for a t56.
A. Just to get the new trany into the car, I assume all I will need is the right clutch. Am I right, is this all that's needed? And, if so, could anyone point me to a link of a good clutch to get?
B. Is there anything I have to do other than that to get the car to run with the new t56? Any required ECM adjustments or anything like that?
C. Is there anything I SHOULD PROBABLY do to get the best use out of the new t56? Like, optional ECM tweeks or anything like that?
Thanks a mill for any info.
A. Just to get the new trany into the car, I assume all I will need is the right clutch. Am I right, is this all that's needed? And, if so, could anyone point me to a link of a good clutch to get?
B. Is there anything I have to do other than that to get the car to run with the new t56? Any required ECM adjustments or anything like that?
C. Is there anything I SHOULD PROBABLY do to get the best use out of the new t56? Like, optional ECM tweeks or anything like that?
Thanks a mill for any info.
Joined: Aug 2006
Posts: 12,807
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From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: Question: If you swap from a t5 to a t56...
read the sticky at the top of the page...
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Joined: Apr 2009
Posts: 265
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From: Spokane, Wa.
Car: 88 Camaro
Engine: 416 Stroker LS
Transmission: Magnum F
Axle/Gears: 4.11
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From: Charleston, SC
Car: '85 TA
Engine: 350 turbo
Transmission: T56
Axle/Gears: 3.70 posi 9bolt
Thread Starter
Member

Joined: Apr 2009
Posts: 265
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From: Spokane, Wa.
Car: 88 Camaro
Engine: 416 Stroker LS
Transmission: Magnum F
Axle/Gears: 4.11
Re: Question: If you swap from a t5 to a t56...
Senior Member
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From: Charleston, SC
Car: '85 TA
Engine: 350 turbo
Transmission: T56
Axle/Gears: 3.70 posi 9bolt
Re: Question: If you swap from a t5 to a t56...
Since your engine is an '88, I believe it is 1pc rms, so you would need the LT1 flywheel.
By 'speedo', I mean how are you going to make your speedometer functional with the signal from the T56?
I think you can reuse the 3rd gen clutch hydraulics, but I am not sure. I bought new 4th gen hydraulics.
By 'speedo', I mean how are you going to make your speedometer functional with the signal from the T56?
I think you can reuse the 3rd gen clutch hydraulics, but I am not sure. I bought new 4th gen hydraulics.
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Joined: Jul 2006
Posts: 615
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From: Warrenton, VA
Car: 1987 Camaro IROC-Z
Engine: LS1
Transmission: LS1 T56
Axle/Gears: Richmond 3.73
Re: Question: If you swap from a t5 to a t56...
im actually curious on what flywheel I need with a 2 piece rms because im getting ready to do the swap myself
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Joined: Oct 2004
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From: Charleston, SC
Car: '85 TA
Engine: 350 turbo
Transmission: T56
Axle/Gears: 3.70 posi 9bolt
Thread Starter
Member

Joined: Apr 2009
Posts: 265
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From: Spokane, Wa.
Car: 88 Camaro
Engine: 416 Stroker LS
Transmission: Magnum F
Axle/Gears: 4.11
Re: Question: If you swap from a t5 to a t56...
Since your engine is an '88, I believe it is 1pc rms, so you would need the LT1 flywheel.
By 'speedo', I mean how are you going to make your speedometer functional with the signal from the T56?
I think you can reuse the 3rd gen clutch hydraulics, but I am not sure. I bought new 4th gen hydraulics.
By 'speedo', I mean how are you going to make your speedometer functional with the signal from the T56?
I think you can reuse the 3rd gen clutch hydraulics, but I am not sure. I bought new 4th gen hydraulics.
As for the speedo issue, I didn't know there would be a problem. (hell, before a few days ago, I didn't even know that speedos got their info from the tranny, I figured it would be from the wheels or something) Are you saying the the old speedo box wont fit the t56? Or that the old speedo box will give faulty readings with the t56s, and that I either need a different speedo box, or a different speedometer?
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From: Mississauga,Ont,Canada
Car: 89 IROC
Engine: LSX 6.0 370, TU2 Cam, Fast intake
Transmission: T56 w/ lots of goodies
Axle/Gears: 8.8, Posi, 4.10, 31 Spline
Re: Question: If you swap from a t5 to a t56...
Im in the middle of a T56 swap and was wondering what the trans mount part number would be as I cant find one on the energy suspension web site. I got a stock one with the tranny but its seen better days. Thanks
Joined: May 2008
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From: pawtucket RI
Car: 1986 iroc
Engine: alum. head 350 supercharged
Transmission: 6speed
Axle/Gears: ford 9in 3.90 35 spline moser axles
Re: Question: If you swap from a t5 to a t56...
i reused the one from my auto
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From: Mississauga,Ont,Canada
Car: 89 IROC
Engine: LSX 6.0 370, TU2 Cam, Fast intake
Transmission: T56 w/ lots of goodies
Axle/Gears: 8.8, Posi, 4.10, 31 Spline
Re: Question: If you swap from a t5 to a t56...
I would but its pretty much toast so im just looking to see what other people used as like i said energy suspensions doesnt have a part number for a T56. Dont know why they dont as they have every other bushing listed for the car accept that one. Its odd
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From: White Hall, Ar
Car: '88 Iroc
Engine: 305
Transmission: T56
Axle/Gears: 3.45
Re: Question: If you swap from a t5 to a t56...
Okay, as others have mentioned, there is good info out there on this swap. However, I ran into a couple of issues because of the direction I decided to go.
First, I have an '88 Iroc and recently did the t5 to t56 swap. With respect to hydraulics: you can reuse your pedals but must use 4th gen style slave cylinder. For me, this was the toughest part of the swap physically because messing around behind the master cylinder is a total pain in the @$$. Of course, it may have been easier if I knew some trick but, alas, I didn't and it sucked.
Second, your car uses a mechanical speedo but the t-56 has an electrical vss (vehicle speed sensor) output. Choosing how to go about solving this was my dilemma. You have a few choices:
1. Have the tailhousing of your t56 modified for an additional vss that’s cable driven. This will run you $300 - $400. (There’s a board member who was doing this… I believe ‘alloy’ is his nick on here).
2. Add a converter box that converts the electrical signal from the t56 and has a cable driven output to drive your stock speedo. Some common complaints are that it has a bit of a sluggish response and is also in the $300+ range.
3. Install a new speedo that takes an electronic input. This is the most expensive and most complicated. It happens to be what I chose to do… (go figure). I searched for an oem solution from another model but didn’t get far. Also, if you go this route and you want your cruise control to work, you also need a converter box (sgi-5 dakota digital) like the 90-92 guys so that you can convert the pulses per mile back down to what the ecm and cruise control module are looking for. And, if you want it to look right, you will also be replacing the other five gauges in the cluster so they all match… more wires! Finally, if you’re really a sadist and choose this option, you need a custom bezel to mount everything in which is fine until you realize you need to tackle the indicators (turn signals, high-beam, service engine light, etc.) If you’re the least bit **** and doing this yourself, I recommend the tailhousing mod. Problem solved.
Third hang-up I had was a source for the t56 pressure plate bolts. I started a thread with Fastenal part numbers for grade 9 bolts that are rated high enough to be safe.
I'll be glad to answer any question that I can... Good Luck!!
First, I have an '88 Iroc and recently did the t5 to t56 swap. With respect to hydraulics: you can reuse your pedals but must use 4th gen style slave cylinder. For me, this was the toughest part of the swap physically because messing around behind the master cylinder is a total pain in the @$$. Of course, it may have been easier if I knew some trick but, alas, I didn't and it sucked.
Second, your car uses a mechanical speedo but the t-56 has an electrical vss (vehicle speed sensor) output. Choosing how to go about solving this was my dilemma. You have a few choices:
1. Have the tailhousing of your t56 modified for an additional vss that’s cable driven. This will run you $300 - $400. (There’s a board member who was doing this… I believe ‘alloy’ is his nick on here).
2. Add a converter box that converts the electrical signal from the t56 and has a cable driven output to drive your stock speedo. Some common complaints are that it has a bit of a sluggish response and is also in the $300+ range.
3. Install a new speedo that takes an electronic input. This is the most expensive and most complicated. It happens to be what I chose to do… (go figure). I searched for an oem solution from another model but didn’t get far. Also, if you go this route and you want your cruise control to work, you also need a converter box (sgi-5 dakota digital) like the 90-92 guys so that you can convert the pulses per mile back down to what the ecm and cruise control module are looking for. And, if you want it to look right, you will also be replacing the other five gauges in the cluster so they all match… more wires! Finally, if you’re really a sadist and choose this option, you need a custom bezel to mount everything in which is fine until you realize you need to tackle the indicators (turn signals, high-beam, service engine light, etc.) If you’re the least bit **** and doing this yourself, I recommend the tailhousing mod. Problem solved.
Third hang-up I had was a source for the t56 pressure plate bolts. I started a thread with Fastenal part numbers for grade 9 bolts that are rated high enough to be safe.
I'll be glad to answer any question that I can... Good Luck!!
Joined: Jun 2002
Posts: 1,296
Likes: 6
From: Vancouver, WA
Car: 87 IROC-Z28
Engine: 305 TPI-New 355 on the engine stand
Transmission: T56
Axle/Gears: 3.73 Eaton posi-Soon a 9" Ford!
Re: Question: If you swap from a t5 to a t56...
Yes I'[m the one that does the T56 cable drive speedometer conversion. The prices is $300 plus shipping. If you need any additional info please PM me. I've done a number of conversions for people on here and all seem to be pretty happy with my services.
Vexter is correct about the lag in the Cable-X box. The last converison I did was for a member that was tired of the problems and lag time with his Cable-X box.
Vexter is correct about the lag in the Cable-X box. The last converison I did was for a member that was tired of the problems and lag time with his Cable-X box.
Joined: Aug 1999
Posts: 858
Likes: 6
From: Elkton MD, USA
Car: 1985 Camaro Z28, VIN F
Engine: 427 sbc, HSR
Transmission: T-56, self rebuilt 700+ hp
Axle/Gears: Moser 12bolt, 3.42 trutrac
Re: Question: If you swap from a t5 to a t56...
3. Install a new speedo that takes an electronic input. This is the most expensive and most complicated. It happens to be what I chose to do… (go figure). I searched for an oem solution from another model but didn’t get far. Also, if you go this route and you want your cruise control to work, you also need a converter box (sgi-5 dakota digital) like the 90-92 guys so that you can convert the pulses per mile back down to what the ecm and cruise control module are looking for. And, if you want it to look right, you will also be replacing the other five gauges in the cluster so they all match… more wires! Finally, if you’re really a sadist and choose this option, you need a custom bezel to mount everything in which is fine until you realize you need to tackle the indicators (turn signals, high-beam, service engine light, etc.) If you’re the least bit **** and doing this yourself, I recommend the tailhousing mod. Problem solved.
http://www.eecis.udel.edu/~davis/z28...s/DCP_3504.jpg
http://www.eecis.udel.edu/~davis/z28...xh_speedo_web/
Anyone with an OEM speedo will tell you it's as accurate as an OEM tach.. At least the Autometer will get you a better reading.
'90-'92 ECMs only need a dakota box if they can't reprogram their ECM. The input constant and the speedo divisor code is well documented. I wholeheartedly recommend any TPI car to upgrade to the '90-'92 ECM also. (It's documented also.. ;-) )
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From: White Hall, Ar
Car: '88 Iroc
Engine: 305
Transmission: T56
Axle/Gears: 3.45
Re: Question: If you swap from a t5 to a t56...
I'm not sure that's the complete picture... I didn't find much problem/aesthetics putting an Autometer Electronic Speedo in my '85 dash.
http://www.eecis.udel.edu/~davis/z28...s/DCP_3504.jpg
http://www.eecis.udel.edu/~davis/z28...xh_speedo_web/
Anyone with an OEM speedo will tell you it's as accurate as an OEM tach.. At least the Autometer will get you a better reading.
'90-'92 ECMs only need a dakota box if they can't reprogram their ECM. The input constant and the speedo divisor code is well documented. I wholeheartedly recommend any TPI car to upgrade to the '90-'92 ECM also. (It's documented also.. ;-) )
http://www.eecis.udel.edu/~davis/z28...s/DCP_3504.jpg
http://www.eecis.udel.edu/~davis/z28...xh_speedo_web/
Anyone with an OEM speedo will tell you it's as accurate as an OEM tach.. At least the Autometer will get you a better reading.
'90-'92 ECMs only need a dakota box if they can't reprogram their ECM. The input constant and the speedo divisor code is well documented. I wholeheartedly recommend any TPI car to upgrade to the '90-'92 ECM also. (It's documented also.. ;-) )
I guess how easy or how hard this ultimately is depends on the OP's expectations with the finished product and thus my reference to being ****.
I may be wrong, but based on reading the OP's posts, I'm guessing he's not doing any diy prom editing. That doesn't diminish the value of the information you posted, I'm not trying to say that at all. I'm just stating the issues I ran into and what I did to solve them.
kthx.
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Apr 5, 2015 04:10 AM
1987, cable, change, electrical, ford, gen, housing, iroc, mechanical, modification, output, picture, speedometer, swap, t5, t56, tail







