alecat454

I haven't sean anybody saying that they have broken there T56 magnums. I broke mine going through the gears with no sticky tires hitting fifth gear at about 120 mph. My car puts out about 700 hp so was very surprised when it broke. Anybody on here broke one of these yet?

Blackpanther99

iTrader: (8)

Ouch! Would hate to pay all that money and see it brake. Was the tranny still under warranty of any kind?

gnx7

iTrader: (28)

Did you powershift into 5th?

Shouldn't you be able to do 120mph+ in 4th? You are way out of your powerband so I'm surprised it hurt it.

I have yet to hear of one breaking/failing.

alecat454

No power shifting, just going through the gears hard. I bought it from a company called American power train They don't stand behind anything they sell.

dgcustomz

iTrader: (127)

I've got a couple here broken. One from a sheared 3rd gear and the other with a sheared 4th gear/input.

alecat454

Don't think that they hold the power their claiming. My gears sheared also.

Blackpanther99

iTrader: (8)

Main reason why I stayed away from them. Any plans on next tranny? I would do a TR6060.

Guitar

iTrader: (9)

Tick TR6060 is what I'm going with if I stay manual (very likely), Stage 5. They are local to me and I haven't personally heard of a built TR6060 breaking.

alecat454

I put my old T56 back in. It holds up if I don't put sticky tires on, Magnum didn't even do that. I hate to say it but I thought about putting a auto in it.

rycetr94

Just to be clear... The T-56 Magnum is essentially a direct shift version of the TR-6060--both of which are stronger than the original T-56. And based on what I've seen, they definately hold up to what Tremec claims. Other than having to replace an output seal in mine, I've been real happy with it. Of course, I'm not anywhere near the 700 ft lb torque rating. Biggest problem I've seen is that they fit like s--t in a 4th gen.

SYRacing

iTrader: (2)

they all break when you abuse them regularly....whether it's a T56/6060 or a beefy NV4500/NV5600 or even an eaton fuller

5th gear problem can be attributed to the weaker 2pc counter

explain 'direct shift'

from my understanding the 6060 has thicker gears but very similar case size as a T56 so the syncros got narrow to accommodate the larger gearset. This is why the high rev guys don't like using them. (6060)

I think the magnum moniker is a load of ****...it's an M12 or 05+ equivelent trans but sold as a 'universal' application. It lacks the 32 spline output of the SSR and the 1pc counter of the SSR or vette Z06.

Read MikeTPI's 1000hp on stock parts guide and get familiar it's really the only way to fly

cmac06

iTrader: (16)

The tail housing has the shifter attached directly on the Magnums but it sits on sort of like a bracket on the 6060. I can't seem to post a picture.

rycetr94

Amen to that SYRacing, none of them are 'unbreakable'... Regarding alecat's fifth gear problem, the Magnum does use a single piece cluster, so that isn't his issue--though I'm curious what is. By 'direct-shift' I meant that the shifter is affixed directly to the case, instead of hanging off the back like every car except the Viper does now. I typically refer to that setup as a remote shifter and I hate all of them when trying to shift hard.

As far as the case and gears go, the Magnum/6060 case looks just like a T-56 but the mounting flanges are thicker at both ends and there is extra webbing inside. Gears are pretty much take away from the TR-6060, and yes the gears are wider. As you eluded to, the extra mass is not such a great thing for high rpm's as it pertains to the synchro's ability to do their job. However unlike most T-56's, the Magnum & TR-6060 use triple cone synchros on 1-4 and double cones for 5th, 6th and reverse. The materials have changed some since the TR-6060's debut in '07 (a mix of sintered bronze and carbon composites), but generally speaking, they all have greater capacity than any of T-56's by a fair margin. Lastly, the Magnum output is 31 spline and is within a hair of the SSR's 32 spline shaft. The only reason the SSR had that shaft is because it was a 6,000 pig.

SYRacing

iTrader: (2)

good stuff...didn't realize the magnum had the 1 piece counter. I'll have to look them up and see if I can find a tremec PN for that 1 piece cluster....mine was a pretty penny from GM and will be cheaper thru tremec.

thanks for the info about the shifter, can't stand my keisler 'mid shift' conversion it's a god awful piece of garbage

jmd

iTrader: (4)

We're talking T56 Magnums (a TR6060 derivative) and TR6060, none of which have a 2pc. countershaft.


Sheared at the teeth like the OPs 5th gear?

calhoon

iTrader: (6)

Quote
"can't stand my keisler 'mid shift' conversion it's a god awful piece of garbage"
I can't tell you how many times I have heard that comment. There are much better engineered mid-shift shifter setups out there.

rycetr94

Anytime, SYR. And like Calhoon said, yeah, I've heard that comment and many more like it, many times over... Are you refering to a mid shift conversion on a TKO, T-56 or T-56 Magnum? Magnum's are as easy as falling down to convert because they're made to accept a forward or "mid" shifter, TKO's aren't too much harder (though "mid-shift kit" quality varies), and T-56's just shouldn't be done. They require modifying the shift rail under the inspection plate on the main case--leaving lots of room for small but potentially devastating errors.

And before this thread gets hi-jacked completely... Alecat454, what's going on with your trans? Any new news? I'm still wondering why that thing would have smoked fifth. Has it been taken apart yet?

alecat454

My first post has a picture attached of the broken parts

Timonator

iTrader: (5)

I somehow broke mine. My car has less than 500 hp and it has less than 600 miles on it. First thing on Friday I noticed a knocking noise and tried it around the block, it wouldn't go into third or 4th. yesterday I tried it again and it was stuck in a gear. Today I pulled it and took the shifter and cover in front of the shifter off there is metal in there and the fluid is dark greyish. Anyone know of a t56 guru in the Chicago area or an online guide to disassembly ,inspection and reassembly ?
Thanks, Tim

DAVESS02

iTrader: (30)

gotta wonder if this is part due to the trans being shimmed too loose or a factory flaw with the hardening of a gear.