For those that have done a T56 Magnum - I'm getting conflicting info

Strikeking10

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Real quick...

Stock bell housing works

Need 31 spline yolk (i run a billet yold) and need to be shortened 1-1.5". I shortened mine 1.25"

Floor board massaging is required with a BFH as well as some shifter hole trimming.

Ovaling out the trans mount holes a little is also required.

You are going to need to get a mechanical speedo block off plug. It doesn't come with the trans.

This is exactly what I did to install mine
 

2003 Venomous

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This was a confusing topic when I had trans issues. I ended up getting a hybrid T-56 built by Texas Drivetrain and Performance. They helped me out and installed 6060 guts in my case and checked my yoke...used a forged strange 31 spline.....cant remember the PN. Best part, all my old parts fit like a glove and I didn't have to mess with DS lengths, shifter locations, etc..... Customer Service was top notch, they will make it right for you. PM me if you have questions.
 

MalcolmV8

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Where did you get the yoke from?

The factory sensor did not fit my Magnum. You just blocked off the opening? Doesn't the speedo get signal from that?

TremicT56Magnum5_zpsbf528434.jpg


When I spoke to D&D Performance they indicated that the Magnum comes with both the electrical VSS speed sensor hook up and the old school mechanical cable hookup. So what I believe you do is plug the old cable hole and re-use the VSS sensor in the appropriate spot. They say it does fit and you do not loose the VSS.

This was a confusing topic when I had trans issues. I ended up getting a hybrid T-56 built by Texas Drivetrain and Performance. They helped me out and installed 6060 guts in my case and checked my yoke...used a forged strange 31 spline.....cant remember the PN. Best part, all my old parts fit like a glove and I didn't have to mess with DS lengths, shifter locations, etc..... Customer Service was top notch, they will make it right for you. PM me if you have questions.

I'd be interested to know what you got. The T56 Magnum from what I understand is basically a TR-6060 inside or based on it and darn close. That's why it shifts different and apparently is so much stronger. If all that could just drop into the stock T56 case we have I'm sure everyone would be doing that. No doubt they built you something nice and strong but I do wonder what exactly all the guts are.
 

2003 Venomous

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The case was machined in certain locations and the all the internals were upgraded with all the major parts, syncros, keys, etc... The input shaft and throwout bearing sleeve need machining as well. I spoke with Jason and he assured me that my power potential was no problem, building a motor and should be close to 1k in the motor. I did not want to buy parts I didn't need and don't like beating or cutting the car to make something fit when there are alternative solutions. Either way, its personal preference and go with what you feel comfortable with.
 

MalcolmV8

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The case was machined in certain locations and the all the internals were upgraded with all the major parts, syncros, keys, etc... The input shaft and throwout bearing sleeve need machining as well. I spoke with Jason and he assured me that my power potential was no problem, building a motor and should be close to 1k in the motor. I did not want to buy parts I didn't need and don't like beating or cutting the car to make something fit when there are alternative solutions. Either way, its personal preference and go with what you feel comfortable with.

That's cool. Sounds like he built you something nice and strong. What was his pricing compare to the Magnum? Just curious. I'm leaning towards the Magnum just because it's a proven platform.
 

SVT Hess

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I just recently ordered my Magnum from D&D (2.66 first), just waiting for them to install the internal oil pump and swap out 5th and 6th gear for the .74 and .50 ratios. I've been doing a lot of reading on the Magnum install, I'm hoping its a pretty easy install, biggest thing I'm waiting on is getting the trans installed and measuring so Driveshaft shop can make me a shaft. D&D told me that I would need to change out the yoke for the 31 spline and that I could use my stock bellhousing or the quicktime bellhousing, I opted for the quicktime.
 
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2003 Venomous

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That's cool. Sounds like he built you something nice and strong. What was his pricing compare to the Magnum? Just curious. I'm leaning towards the Magnum just because it's a proven platform.

He rated the trans better than a stock Magnum (he has my same trans in customers cars pushing 1200HP and they are still together) and it uses the same gears while upgrading the rest of the internals. The price was far better than a Magnum and the shipping was only $100 instead of a crate fee and off loading at some dock. I saved a considerable amount and it shifts smooth as butter, damn near jumps into gear. In the end, go with what you feel is the best decision....just trying to give options to others as they are big in the Chevy T56 world, not so much the Fords.
 

MalcolmV8

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He rated the trans better than a stock Magnum (he has my same trans in customers cars pushing 1200HP and they are still together) and it uses the same gears while upgrading the rest of the internals. The price was far better than a Magnum and the shipping was only $100 instead of a crate fee and off loading at some dock. I saved a considerable amount and it shifts smooth as butter, damn near jumps into gear. In the end, go with what you feel is the best decision....just trying to give options to others as they are big in the Chevy T56 world, not so much the Fords.

That's awesome :beer: Can you post contact info? I'd like to look into it before buying a Magnum.
 

black-plasma

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For the guys that have or considering upgraded trans, did you break something in the original T56 (besides factory input shaft)? I was in the same boat last year and decided to try an upgrade kit first. So far it's been holding at the track just fine. I'm running a 2.9 and making ~750rwhp.
 

Tractionless1

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This was a confusing topic when I had trans issues. I ended up getting a hybrid T-56 built by Texas Drivetrain and Performance. They helped me out and installed 6060 guts in my case and checked my yoke...used a forged strange 31 spline.....cant remember the PN. Best part, all my old parts fit like a glove and I didn't have to mess with DS lengths, shifter locations, etc..... Customer Service was top notch, they will make it right for you. PM me if you have questions.

Nice info. seems like the best option.
 

TonyG2

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I have a Quicktime bellhousing NIB, part number RM-8080 if you're interested. I bought it for my T56, only to find out that it wouldn't fit between my BBK longtubes. They go for $550 shipped, I'll sell mine for $450 shipped, if you're interested.
 

MalcolmV8

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For the guys that have or considering upgraded trans, did you break something in the original T56 (besides factory input shaft)? I was in the same boat last year and decided to try an upgrade kit first. So far it's been holding at the track just fine. I'm running a 2.9 and making ~750rwhp.

I have not broken the stock unit. I just decided to upgrade because I want a stronger unit that won't break in the future with engine upgrades and because it is said to shift like butter compare to the stock transmissions.
 

SlowSVT

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MalcolmV8

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OK

I emailed Tremec. They said the yoke on the Magnum is slightly different then the C6 so the Strange Engineering yoke won't work. I called D&D and the 2 yokes they have available for the Magnum are p/n: D70 for a 1330 U joint and p/n: D93 for a heavier duty 1350 U joint. Both yokes have forged caps.

http://www.ddperformance.com/d93-hd-31t-slipyoke/

http://www.ddperformance.com/d70-hd-31t-slipyoke/

From what I understand our cars have the 1350 u joint not the 1330 so you need the D93 yoke.
 

SlowSVT

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Yes correct. I'll probably get this ordered next week and get rolling on it.

Malcolm

D&D stated this is a forging, looks cast to me. Maybe not a big deal but I would rather have billet or a forged yoke. I'm going to poke around a bit more to see what I can come up with.

Possible source, I sent an email inquiry.

http://www.sonnax.com/landing_pages/slip_yokes
 
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MalcolmV8

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Malcolm

D&D stated this is a forging, looks cast to me. Maybe not a big deal but I would rather have billet or a forged yoke. I'm going to poke around a bit more to see what I can come up with.

Possible source, I sent an email inquiry.

http://www.sonnax.com/landing_pages/slip_yokes

D&D makes/sells really good stuff in general. If that's what their customers are using I have faith in it :) but if you find something better for the same price or darn close I'd be interested.
 

usmc320

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For the guys that have or considering upgraded trans, did you break something in the original T56 (besides factory input shaft)? I was in the same boat last year and decided to try an upgrade kit first. So far it's been holding at the track just fine. I'm running a 2.9 and making ~750rwhp.

Mine sheared the teeth on the input shaft and main shaft. If I remember correctly those 2 shafts together were over $500 plus a rebuild kit. Not knowing if the car was abused by previous owner or whether the trans just wasn't up to my turbo setup, I opted for the Magnum. The stock bellhousing worked just fine. I needed a shortened driveshaft. I had to massage the trans tunnel a little to fit. Nothing that was a big deal.
 

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