robertspark

Hello,

Help and advice please from anyone in the know or can confirm the following:

I am intending to do a TR6060 conversion to an SSR mainshaft, therefore 32 spline, all the information that I can find seems to point to this 32 spline mainshaft as being able to use a 32 spline TH400 yoke (which also appears to be the same profile as a Muncie and or 6L80E, etc.)

I am about to use the transmission with a transfer case application and want to respline my input gear or have a custom input gear made.

The question is, does anyone know what profile the splines are??

From my research, they appear to be 32T 24/48DP 30º involute splines?

Can anyone confirm this or correct me?

85MikeTPI

iTrader: (9)

The TR6060 gearset is not compatible with the SSR T56 mainshaft..

The 31spline T56-magnum mainshaft is more than capable.

robertspark

85MikeTPI, thanks for the response,

daft question, why is the TR6060 gearset (M10) not compatible with the SSR mainshaft?

Thanks again in advance

85MikeTPI

iTrader: (9)

Basically the TR6060 has thicker gears, and thinner synchros, all in the same area of the T56. So the mainshafts and gearsets can't be exchanged because all the machined surfaces and splines don't match up.

robertspark

Thanks Mike for the info, it is greatly appreciated.

Do you have any information on what t56 Magnum / TR6060 mainshafts are available, pictures etc, similar to what you kindly did on your T56 1000P conversion thread which was very useful.

I have a very odd application which is not just a power / torque issue, I am trying to mate the the TR6060 (which appears to be a cost effective option in my part of the world - UK [at the moment]) to a transfer case which would require a custom tailhousing, and requires a resplining of my transfer case input gear to match the TR6060 output shaft.

A mainshaft with a fair length of spline and a fair outside diameter is what I am in need of. (a Z06 is way too long for my application).

The engine will be an LS7 (at present un-modified, but we will see how my application stands up to the power that it is defiantly not accustomed too before thinking about even more power [superchage maybe...]

The following is a similar application with a TKO600 which I do not really want to do unless this route is defiantly cost prohibitive as that route is looking like a $9000 conversion excluding the LS7 and anything after the transfer case input gear which will also need upgrading.

http://slroc2.co.uk/forum/index.php?topic=6768.0

Many thanks for your and anyone elses guidance, I know we are all busy with our own interests and objectives.

Rob

85MikeTPI

iTrader: (9)

Have you been through these threads?

https://ls1tech.com/forums/manual-tr...ghlight=tr6060

http://www.performancetrucks.net/for...-build-482293/

robertspark

Thanks Mike again, seen the first post above before, but I should have compared the mainshaft photos to your 1000HP conversion and my answers would have partially been answered as the mainshaft differences are visually clear.

Not seen the 2nd post before, it is interesting, but I cannot go that route as I need my transfer case outputs in a line running down the RHS of the transmission and engine, it seems most of the US transfer cases have front outputs on the LHS, also I want to really avoid having to change axles, propshafts, propshaft lengths etc. After all that I may as well built a 2WD kit car (ultima... or lotus 7 LS7 powered + for the cost)

I did consider using a Z06 tailhousing as that seems to be fairly common, but I think that it is a little wide for my application, because of the diff lock mechanism & HI/LO ratio change mechanism and in all fairness there does not look too much that the tailhousing comprises that cannot be either cast of CNC'd to form the tailhousing I need.

Thanks again for the direction & guidance it is very much appreciated.

robertspark

Further bit of parrallel development, I asked Kevin at thegearbox.org (as I didn't know who else may have a decent stock of T56 Magnum mainshafts, or couldn't find any websites that seemed to list much in the way of T56 magnum spares) ... again anyone with an help, info, guidance or direction would be greatly appreciated....

His response to the question of did he have any spec's or photos of how may different T56 Magnum / TR6060 mainshafts were available was as follows:

"Hello
I do not have a clue what main shaft you might want to use, The ford cobra input has 31 splines, As for the size of it i do not know as i do not have one in stock at this time.that i could measure. There are main shafts for the Camaro 6060, the dodge challenger 6060, corvette 6060?? Cobra 6060. But we do not have specs on them, Tremec does not provide that info. Please let us know if we can be of further help, thansk kevin"

I think my question has a little bit been misunderstood as I'm not concerned with the transmission input shaft as it will be a GM suitable for LS engine. (LS7)

The camero TR6060 appears to be the short spline flanged mainshaft (same as the one pictured below) seems to be prone to breakage + a little short for my application, trying to replicate the SSR (length + diameter).

The corvette TR6060 appears to be the long mainshaft, suitable for transaxle mouunting, this seems to be a little long for my application.

Anyone know what the challenger TR6060 mainshaft looks like?

Anyone know what the Cobra TR6060 mainshaft looks like? [from a google image search, the transmission appears to be very similar to the camero listed below)

From the email response above he has not mentioned the T-56 magnum mainshaft which from the photos on other posts seems like a good second choice, but it adds a few inches that I will need to move the engine forward from its current position, not a major issue, but I'd like to see if anyone has any other lengths and output shaft dimensions (+tooth count) for the others listed above and any other mainshaft options known about [someone else may find this useful in the future too with an oddball conversion]



T-56 Magnum LHS, TR6060 Camero RHS (seems / appears to be the same as the TR-6060 (M10) (TUET10310))
Note: the above image is kindly copied from the following thread:
https://ls1tech.com/forums/manual-tr...body-pics.html

Anyone make a custom mainshaft?

25thhawk

iTrader: (3)

not to hijack your thread, but does anyone know the answer to the original question. I have a 32 spline t56 and all of the CM yokes are counterbored for the th400. Which limits the spline engagement to about 2 3/4". I would love to find a different yoke that isnt counterbored and will work with the SSR shaft. Thanks

Ryan

robertspark

No hack, do what you wish, open forum more info for people with similar issues in the future

Bit of research for anyone interested:
TR6060 (Corvette Z06) mainshaft part numbers:
27 splines: LS3 engine 1917 8658 TUFP 6611
30 splines: LS7 engine 1917 8659 TUFP 6639
http://www.autogear.net/assets/liter...6666f71edc0344.

robertspark

Someone kindly provided the mainshaft numbers for the range of T-56 Magnum transmissions, note these are the published mainshafts only, there may be others.... All use the same mainshaft

TUET7477 - TUFP7308
TUET7478 - TUFP7308
TUET8272 - TUFP7308
TUET8274 - TUFP7308
TUET8275 - TUFP7308
TUET8277 - TUFP7308
TUET11009 - TUFP7308
TUET11010 - TUFP7308
TUET11011 - TUFP7308
TUET11012 - TUFP7308

Just need the 31 spline profile now... anyone....
Teeth = 31
Diametrical Pitch = ???
Pressure Angle == ??? (30º maybe)

thesource

iTrader: (60)

Its the same as the Ford stuff. What transfer case are you planning to use?

robertspark

Landrover LT230






Input gear:



Input gear resplined