StrokerTA

We are doing a swap currently, and I got a complete motor. I just need a trans, what year make or model 6 speed should I look for...
Its gunna be a twin turbo car, street driven, but is gunna get abused..
The guys at FLT will be rebuilding whatever I get but I just wanna start with the best unit we can.

Fb0dy0nly

iTrader: (10)

01+ T56 from an fbody/vette/etc. If its getting rebuilt anyway, this would work fine.

bearcatt

iTrader: (41)

The most desireable are the 04 to 06 GTO MN12 T56 transmissions because of the double/triple syncros. These trans have corvette gear ratios as well and suppose to shift smoother.

Others prefer the gear ratios for the regular M6 T56 6 speeds equipped on the 1998 to 2002 F bodies. If you want the strongest 6 speed possible, some do the viper conversion with the stronger output shaft and modified extension housing.

I have both transmissions, I prefer the gear ratios on the regular M6 transmission over the MN12. I also can't notice a difference in shifting smoothness between the two.

I may do the viper conversion on my original M6 T56 transmission.
You won't build a stronger six speed that I know of.

http://www.ddperformance.com/shop/pr...th=107_103_122
BG29 Viper OPS Conversion LT-1/LS-1

T-56 Viper Output Shaft Conversion Kit

LT-1 / LS-1 Camaro Firebird

Upgrade your stock 27 spline ouput shaft to the Viper 30 Spline output shaft.

Increase's torque capacity from 500 lbs-ft. to 650 lbs-ft.

Kit includes: Viper 30 Spline Output Shaft, D & D Modified Speedometer wheel, Extension Assembly & snap rings.





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Big_Bird_WS6

iTrader: (7)

i would say the new TR6060 (t-56 magnum) it is rated to 700 ft-lbs out the door. all the vet and f-body and gto t-56 are only rated to like 350

Billy M

I'll second that. Tremec's new T-56 Magnum is the one to buy.

StrokerTA

So thats a brand new Tremec then huh? It was not available in any cars?

Wesmanw02

iTrader: (4)

It comes in the New Corvettes (as a transaxle), Vipers, GT500, and the new Camaro. They call it a TR-6060, the aftermarket version is called T56 Magnum, but supposedly they are the same thing.

bearcatt

iTrader: (41)

Will these TR-6060 fit into our current LS1 F-bodies ?



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DONAIMIAN

iTrader: (18)

Actually the MN12 is rated at a lower tq capacity that the rest due to the different gear ratios.

RiceEaterZ

iTrader: (6)

only 350?

DONAIMIAN

iTrader: (18)

http://www.ttcautomotive.com/English...s/T-56.asp#Car

Big_Bird_WS6

iTrader: (7)

yep. call D&D they are a sponser----->
i ordered mine last week and should get it this week or next.\



and DONAIMIAN that is hard to follow. if you guys call tremec and ask them to email you the online catalog it is easier to follow. lol. but your right they do very from 350 to 450. but still not 700 like the tr6060. so if a non built t56 will actually support like 800. then hell the 6060 shouls support likke 1200. guess i will find out for you all. i am hopping to shove a 1000 horse thought it.

bearcatt

iTrader: (41)

Wow! That's going to be cool.

I wish I hadn't spend so much money on my MN12.

I wonder what those TR6060s will retail for.


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Big_Bird_WS6

iTrader: (7)

retail is like 2800 or 2900 not sure which.

but is a great piece

bearcatt

iTrader: (41)

That's not bad at all for what you're getting.


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NHRAMAN

iTrader: (1)

That is what the ZR1 has.

Wesmanw02

iTrader: (4)

F-body/Vette spec'd T56's are rated to 450ft/lbs

BLOWNBLUEZ06

iTrader: (17)

The Z51, Z06 and ZR1 has it as well as the GT500, Viper and CTS-V

thesource

iTrader: (60)

The T56 Magnum is priced @ $2795 pls shipping. So far I know of no one that actually has received their units on order. Last time I spoke to my Tremec rep, they said only a very limited amount were available for sale. Basically, I think Tremec has other internal issues going on and stalling their dealers.

Big_Bird_WS6

iTrader: (7)

i ordered mine form D&D. it should be here soon.