What type of trans do you have in the car stock, rebuilt, beefed up?

I plan on getting my car into the 10's next year and need to find out a way to make this dam T-56 take some abuse. I havent raced much this year and the syncros are starting to go. I will probably rebuild it or buy a new one in the spring.

If you have a LT1 T-56 and its stock and hasent blown up yet I dont want to hear about it. Theres something with those older T-56 they just dont break like the new ones do.

 

I have a 98 Turbo Formula with a T56 and 12 bolt. This year the car has made about 30 hard low 11, high 10 passes and has withstood 4 years of high abuse in the high 11's. I would say all in the car has 250+ passes on the same tranny

My tranny was blueprinted and rebuilt 4 years ago and has held up extremely well. I have blown up about 5 clutches over that same period and had to replace 3 throw out bearings and one fork. If rebuilt correctly these tranny's can take a ton of abuse and keep running.

I still think that for a car that is going to see lots of drag use and auto is the way to go. Shifting with a stick can be pretty hard on other parts as well.

Paul

 

Who did the work on the trans ?

I dont plan on drag racing to often twice a mounth if that. I love driving this car on the street so I dont want to put an auto in it. Im just going to build V6 camaro up and through a 4xx engine on nitrous with a Turbo 400. But thats at least 3 years away. I need something to keep me racing until then.

 

I have a T56 in my car and have run a 9.94@138.45 with it and the trans was untouched.

My buddy Taner has a T56 in his LT1 and has run a 9.60 in it and has pulled 1.2x 60' times with it. His has been rebuilt and cryoed the internals to be able to do it.

Good luck.

p.s. We both run McLeod street twins. Just an Awesome clutch.

 

Good point romanss, I also have a Mcleod Street twin in my car. Stay away from the aluminum flywheel, I tore mine in two the steel disc is great. On a side note, I don't know if my aluminum saga was a fluke or not.

My tranny was rebuilt by Aamco in Toronto. I had lost 1st and reverse so it had to be done. Basically they replaced 1 through 4 with the good stuff, blueprinted it and put it back in the car. There are good tranny shops that can do these.

Paul

 

10.3 at 135 best to date. But it has 30+ 11.0 or lower passes and three years of street abuse. Stock T56...no upgrades. Just dont shift so hard...i believe most of the breakage comes from trying too hard to slam it in gear. Of course my car has always bee easy on parts breakage...im still on the stock 10 bolt rear

 

How do you power shift lightly? Mine has alwas been shifted hard even with the stock clutch and hydrolics, if I dont it grinds or kicks right back out then grinds. Maybe I just got a shitty one or who ever had it before me messed it up, the car had 19K on it when I bought it.

 

I dont power shift on nitrous. I Just try to shift as fast as possible.
I can powershift on motor alone...but with the extra Tq of the nitrous it just doesnt want to be powershifted...so I dont force it.

 

Our 9'sec project car has stock parts with only the steel 3-4 shift fork upgrade. Really haven't seen one break from to much power,only bad shifting habits. I "quick shift" bearly using the clutch and slightly lifting off the gas. Speedshifting will tear one up quick!

 

Thats what I call speedshifting, lifting your foot off the gas a little and using the clutch. Powershifting my foot never comes off the floor and I "kick" the clutch pedal and grab the next gear. Maybe I have no skills

 

I went 10.9 @ 128 with the stock T-56 as it was shipped in the car when i bought it.

Had D&D go through it when I built the motor the first time. Other than the steel 3/4 fork, all stock replacement parts inside. Went 10.000 @ 142+ with it that way.

It's currently at Liberty Gears getting the once over and pro-shifting 2nd, 3rd, and 4th gear.

Haven't really broken it yet, knock on wood. But before the first rebuild, the gear whine was louder than my 12 bolt

 

Harlan pardon my ignorance but what is a this "It's currently at Liberty Gears getting the once over and pro-shifting 2nd, 3rd, and 4th gear." mean?? Is it still a 6 speed of does it become like a Lenco? I have heard a couple people refer to Liberty Gears with "pro-shifting" but I havent been able to find any info about it on the web.

Sounds like the perfect thing for me I think a rebuilt is coming soon I am getting some whine in 3rd and 4th pretty good.

 

Here's a little blurb about one carcraft used

http://www.carcraft.com/techarticles/98378/

Basically, they removed the syncros and i think the blocker rings. Install a dog ring in their place. The upshifts are very fast with the setup, requiring just enough clutch application ot get the dog rings to release.

Downshifting on the other hand is a learned skill now. Without the blocker rings to slow down/speedup the main shaft of the transmission to match the output shaft for the gear you want you have to double clutch, and manually blip the throttle.

Basically, clutch to get outta gear. release the clutch in neutral, blip to speed up the trans, then clutch again to get the lower gear.

Should be fun

 

That isnt to bad a sacrifice for a "play" car. A daily driver it could be a pain but if it shifts that much better at high RPM then I could live with it.

 

well, give me about 2 weeks and i'll let you know how it goes

 

Mustang Hat'r 2, I see you are from this area.....what part?

I agree with speedshifting vs. powershifting. My tranny's last alot longer now that I dont powershift.....and a proper speedshift is quicker than a powershift in my opinion (not looking to start a debate).

I had my T56 rebuilt at D&D, upgraded steel 3-4 fork, and thats about it. It has held up great. I am interested in some of the new "upgrades" starting to become available now....like Harlan's Liberty pro-shifted setup. G-force is also starting to machine their own upgraded parts for the T56s that should be available soon.

D&D's cryo treatment seems to be holding well with the big power guys, so there are a few options. If you tranny needs a rebuild, I would just send it to D&D....from there, just practice good/fast shifting and you will be fine at your current power level.

Jason

 

About what is the cost of this setup? My trany is probably not gonna hold on much longer. And I hate to go auto I love the 6spd.

Thanks,
Darrell

 

I live out in Leroy its about 15 mins from the track. I raced on friday night had 4 passes only 1 was a clean one all the others I missed 3rd, 4th or 2nd my trans is pretty shot, now when I'm shifting its like hitting a wall no grinding it just stops dead even on the street its real notchy or snaps in to gear. I think I will wait until early spring and send it to D & D and get it done.

 

I was at Liberty's last saturday to pick up my trans after a rebuild. Craig said they are working on a "face-plate" set up that could be out next year. Supposed to be more streetable than the Pro-shift, but still slam through the gears at the track. If you are going to wait till spring anyway, I'd give them a call and see what's up. 313-278-4040