Fast guys running a T56 come in!!! - Sub 11 second
#1
Fast guys running a T56 come in!!! - Sub 11 second
What kind of parts are you guys with fast T56 cars running in your transmissions? I'm particularly interested in hearing from guys running in the 10s and quicker with heavy cars that ET well. IE not running a 10.80 at 135 MPH. I'd really like to hear from Taner
As of right now my T56 has your typical parts:
-Viper main shaft
-Carbon blocker rings
-Billet 3-4 synchro keys
-Bronze fork pads 1-4
-Steel 3-4 fork
Last time I had my car out it was running 7.30s in the 1/8 (should be around 11.40s-50s). When I got to the track, the transmission was working fine and quiet. After about 8 passes, it was starting to whine but still working fine. This was a month ago and as of now it still works fine. It only whines when the input shaft is spinning, so it must be the contact of the teeth on the input shaft and the countershaft meshing with each other.
I called D&D to ask them about it and they said the input and countershaft are probably worn and need to be replaced. I am wanting to know if stock ones on my only option, or if there is a better part available? I have a different motor now and should be running well into the 6 second (10 second) range. My car is heavy at 36-3700lbs and I want to 60' well into the 1.4x range. I want to use the right parts the first time and have my transmission hold up as long as possible, so I want hear what the people with experience have to say. I'm expecting the transmission to need fixed shortly after this powerful new motor goes in the car
As of right now my T56 has your typical parts:
-Viper main shaft
-Carbon blocker rings
-Billet 3-4 synchro keys
-Bronze fork pads 1-4
-Steel 3-4 fork
Last time I had my car out it was running 7.30s in the 1/8 (should be around 11.40s-50s). When I got to the track, the transmission was working fine and quiet. After about 8 passes, it was starting to whine but still working fine. This was a month ago and as of now it still works fine. It only whines when the input shaft is spinning, so it must be the contact of the teeth on the input shaft and the countershaft meshing with each other.
I called D&D to ask them about it and they said the input and countershaft are probably worn and need to be replaced. I am wanting to know if stock ones on my only option, or if there is a better part available? I have a different motor now and should be running well into the 6 second (10 second) range. My car is heavy at 36-3700lbs and I want to 60' well into the 1.4x range. I want to use the right parts the first time and have my transmission hold up as long as possible, so I want hear what the people with experience have to say. I'm expecting the transmission to need fixed shortly after this powerful new motor goes in the car
#6
CARTEK Racing
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Stock trans took over 400 passes, most of those in a few different 10 second setups. Including H/C+ Nitrous, and 2 H/C setups. I swaped it out now, but it never gave me a problem.
7000rpm launches and 7000rpm shifts for over 100 passes with 1.4x short times. If you can drive, you can do it on a stock trans. Otherwise your recipe looks good to me.
#7
TECH Addict
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Who did your last rebuild and what shim specs did they use on the input shaft?
FWIW, I just picked up a new front plate for the next SSR-hybrid build, and noticed the input shaft and countershaft bearing race pockets have revised (improved?) fluid funneling channels.. It might be worth the extra $200 to try a new front plate if you're investing that much $$ into the motor..
FWIW, I just picked up a new front plate for the next SSR-hybrid build, and noticed the input shaft and countershaft bearing race pockets have revised (improved?) fluid funneling channels.. It might be worth the extra $200 to try a new front plate if you're investing that much $$ into the motor..
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#8
I'm one of them.
Stock trans took over 400 passes, most of those in a few different 10 second setups. Including H/C+ Nitrous, and 2 H/C setups. I swaped it out now, but it never gave me a problem.
7000rpm launches and 7000rpm shifts for over 100 passes with 1.4x short times. If you can drive, you can do it on a stock trans. Otherwise your recipe looks good to me.
Stock trans took over 400 passes, most of those in a few different 10 second setups. Including H/C+ Nitrous, and 2 H/C setups. I swaped it out now, but it never gave me a problem.
7000rpm launches and 7000rpm shifts for over 100 passes with 1.4x short times. If you can drive, you can do it on a stock trans. Otherwise your recipe looks good to me.
Who did your last rebuild and what shim specs did they use on the input shaft?
Do you have any pictures of that front plate? Just want to see if there is any reason you couldn't modify the fluid channels on your own on the original style plate. Are they just revised or are they in a different location?
#9
TECH Addict
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I guess more on the Input than the countershaft.. The whole area around the pockets is sunken and the input pocket has a raised "windage" scraper and enlarge fluid channels..
#10
CARTEK Racing
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Thank you sir.
It is possible to go fast on a stock trans, but many things contribute. One poor clutch choise, or one miss adjustment on the master cyl. and I would have been rebuilding my trans.
The parts list looks good, what clutch, master and shifter do you plan on running?
#12
my car is light so i cant really be compared to you, but i also have a " built " DD tranny, its their 550 tq rated version , no viper shaft. the tranny came in a box that said made in mexico lol any way my car runs 10.2 at 133 and i daily drive it and so far the tranny is as good as day one. but like i said my cars lighter then yours.
#13
Thank you sir.
It is possible to go fast on a stock trans, but many things contribute. One poor clutch choise, or one miss adjustment on the master cyl. and I would have been rebuilding my trans.
The parts list looks good, what clutch, master and shifter do you plan on running?
It is possible to go fast on a stock trans, but many things contribute. One poor clutch choise, or one miss adjustment on the master cyl. and I would have been rebuilding my trans.
The parts list looks good, what clutch, master and shifter do you plan on running?
I'm running the MT ET Drag 28x10.5 stiff sidewall tires.
Did you get an aproximate cost on having these replaced?
My built tranny just started whining last week.
My built tranny just started whining last week.
#17
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My t56 had about 140k miles b4 i put my new motor in. A week later no more 4th and clutch sticks every time i floor it.
Tick level 3 rebuild on the way and im hopeing for 9s with it.
Tick level 3 rebuild on the way and im hopeing for 9s with it.