T56 performance rebuild

I got my transmission built by a guy in Houston at 2nd sucks racing and he did a great job. I was having issues with my third gear and he fixed it. He did a full rebuild and put cf syncros and a steel 3-4 shift fork with bronze shift fork inserts. He also fixed my starter where it broke the block and had it welded back on by a different guy. It was cracking again and he put this steel cage around it and it fixed it. He's built a few tranny's for friends of mine and the refereed me to him. their all happy with their tranny's and so am I.

Make sure he put in the solid billet syncro slider keys.

He did. The issue is though the only make them for one gear. He made his own for the rest of the gears.

They make billet keys for 1-2 3-4 5-6 and even reverse if you want them. IDK who he was ordering parts through but they are available.

I had my trans rebuilt and paid extra for the billet keys for 1-2, 3-4, 5-6 and reverse. Well worth the few extra dollars after my 30k T-56 locked up in 4th gear after a cheap, stamped oem key broke. Shame on you GM.

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Originally Posted by 2002ssslp

I had my trans rebuilt and paid extra for the billet keys for 1-2, 3-4, 5-6 and reverse. Well worth the few extra dollars after my 30k T-56 locked up in 4th gear after a cheap, stamped oem key broke. Shame on you GM.

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This is exactly what happened to me, but at 12K miles. Feel lucky :lol:

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Originally Posted by 2002ssslp

I had my trans rebuilt and paid extra for the billet keys for 1-2, 3-4, 5-6 and reverse. Well worth the few extra dollars after my 30k T-56 locked up in 4th gear after a cheap, stamped oem key broke. Shame on you GM.

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2-3 key took my lil brothers 02 ws6 for a ride...did about 9 k in damage...locked up spun out went through a bush and over a curb...bush was more like a tree base

Usually the keys break as a result of over-shifting. This is where an aftermarket shifter with solid stops helps.

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Originally Posted by robs98mysticZ

2-3 key took my lil brothers 02 ws6 for a ride...did about 9 k in damage...locked up spun out went through a bush and over a curb...bush was more like a tree base

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The Viper and Corvette both got billet keys. I'm not sure about the Cobra. How much more would it cost GM to put these keys in all T-56 transmissions ?

Per transmission? Not much.

yeah i was really scared of this type thing happening...

props for the pro 5.0 with solid stops :boobies:

I asked the guy about putting a shifter with stops in it and he said it wasn't needed. The T56 has internal stops, the T5s out of mustangs don't have them. Therefore the shift stops on the shifter. He said if I do get one to make sure there is a little play while it's in gear to make sure it's in gear. If you don't you will have issues with it not going in gear.

i dont think the t-56 has internal stops, if it does they aren't very good because a lot of guys break or bend keys

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Originally Posted by htownz28guy

I asked the guy about putting a shifter with stops in it and he said it wasn't needed. The T56 has internal stops, the T5s out of mustangs don't have them. Therefore the shift stops on the shifter. He said if I do get one to make sure there is a little play while it's in gear to make sure it's in gear. If you don't you will have issues with it not going in gear.

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Well, I won't disagree, but an extremely reputable T56 builder who builds their transmissions for racers across the entire USA recommended putting in an aftermarket shifter with solid stops.

I got mine rebuilt and haven't had a single issue and I'm pushing a lot of power.

I personally like having a nice, firm engagement when I shift. There is zero play.