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Discussion Starter #1
I was curious how the built auto transmissions have been holding up for street and track driving? Please post which brand you're running and the results, E/T's, how many miles, etc. I am trying to decide if I should repair the one I got, or go to a 6-spd conversion.

The best I can find is there is only one shop that still builds these. At least of the vendors that used to build them, and were a sponsor on here.

We have all heard of the 7 second passes with a certain brand transmission. I am having a hard time believing that is an off-the-shelf trans that doesn't require teardown on a regular basis, based on my personal experience.

I'll start.
Level 10 trans: put 40k miles and 100 1/4 mile passes on it, all ranging from mid-9's to low-10's. Incorrectly diagnosed it as being bad when the converter went bad. Trans was rebuilt "while I was in there".
Brand X Trans: put 2k miles on it, broke a billet 1-2 sprag from a 3-2 downshift. (never broke a stock 1-2 sprag, lol!) Trans rebuilt, put 6k miles of spirited street driving and 3 1/4 mile passes on it. Decided one day it didn't want to pull away from a stop sign. Limped it home, and it's been sitting ever since. Not sure if it's the trans or converter. Fluid and filter look perfect.

Thanks,
Al
 

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Interesting thread. I'm still researching which trans to go with, but I'm pretty much set on the ATF stage 3. I hope that's not brand X you are describing.

I recently discovered C&C built transmissions, but couldn't find a lot of user experiences, except Robert from MVP (now at Real St.).

Casper

Verstuurd vanaf mijn SM-G950F met Tapatalk
 

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I’m patiently waiting for ATF to come out with their stage five A340E. The other trans set up I have my on is PHR’s 6R80 swap. Mega bucks for that though. ATF did tell me the stage five will have a transbrake! Looking forward to this coming out.
 

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I have a factory A340, and opted to go 6R80 rather than have a built unit due to hit or miss reviews of various brands' built ATFs. ATFspeed appeared to be the best option, but the 6R80 checked all the boxes for me rather than going T56, built A340, or sequential dog box.
 

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ATF Speed and C&C appear to be the best options. As far as reliability goes-hopefully some users will chime in. I had a Boostlogic built unit back in the day (2004-2006) which is now in Anna C's car (Bikiniracer). I believe it is still going strong 15 years later.

Steve
 

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ATF Speed and C&C appear to be the best options. As far as reliability goes-hopefully some users will chime in. I had a Boostlogic built unit back in the day (2004-2006) which is now in Anna C's car (Bikiniracer). I believe it is still going strong 15 years later.

Steve
That’s the tranny (Boostlogic) that I’ve got in mine. It’s holding 850whp so far but they have told me not to turn it up any more(car is capable of 1200+ on turbo alone). So i’m patiently waiting to upgrade to the best option by this time next year or sooner.
 

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Discussion Starter #10 (Edited)
What good torque converters are still available?

EDIT: It appears the FTI converter is still available - either thru them or Induction Performance. They make a 4000 "hard hit" converter that I believe is the record setting converter. They also make a 3800 hard hit.

I don't need a lot of stall for the 6466 - the 3200 I have actually works pretty well.

I am hoping it's just my converter that is bad. Would save a lot of headaches.

Thanks,
Al
 

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Al, I believe ATF would be the best bet for the A340E and has been proven time and time again, unless brand X was the brand you were referring to in your initial post (I hope not!).

I've got a built auto in the works, via one of the shops here in the UK who source the parts from the US (I assume ATF) but then have a local guy build the gearbox up, who specialises in drag boxes. I'm only looking to run around 600ft.lb of torque with a FTI/IP 3800rpm hard hit stall. Paired up to a S366 0.91 on a SPA manifold on a 2JZ-GTE VVTi and the autobox electronics controlled by a Syvecs S6+, I'm hoping it'll last for a very long time whilst being VERY fun to drive on the street.
 

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Al, I believe ATF would be the best bet for the A340E and has been proven time and time again, unless brand X was the brand you were referring to in your initial post (I hope not!).

I've got a built auto in the works, via one of the shops here in the UK who source the parts from the US (I assume ATF) but then have a local guy build the gearbox up, who specialises in drag boxes. I'm only looking to run around 600ft.lb of torque with a FTI/IP 3800rpm hard hit stall. Paired up to a S366 0.91 on a SPA manifold on a 2JZ-GTE VVTi and the autobox electronics controlled by a Syvecs S6+, I'm hoping it'll last for a very long time whilst being VERY fun to drive on the street.
Im guessing SRD auto boxes?
Still waiting for some proof what their boxes are capable off. They are crazy expensive imo.

Casper

Verstuurd vanaf mijn SM-G950F met Tapatalk
 

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Im guessing SRD auto boxes?
Still waiting for some proof what their boxes are capable off. They are crazy expensive imo.

Casper

Verstuurd vanaf mijn SM-G950F met Tapatalk
That's the one! I could've imported an ATF built auto and it would've priced up to be the same, if not more, after VAT, import duty and fees. SRD not only get the autobox built up, but install and set it up with the Syvecs S6+ too. I believe there are a few guys running their built auto with no issues so I'm hopeful it'll be better than what I expect.
 

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I have an ATF trans in my MKIV. It runs great. I had several level 10 trans and they are the shits. I would never buy one again.

I just need to get the right torque converter in my car. It was supposed to be a 3400 stall, but its still a stock stall converter.
 

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I've had my 2nd ATF stage 3 now for about 4 years now going strong. plenty of highway driving and over 200 street pulls. still alive surprisingly. run 2 giant trans coolers as well. im probably going to go stage 4 next then if that breaks its 6R80 time. IP4000 stall as well.. [email protected] 25psi on the street using Dragy.
 

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I've had my 2nd ATF stage 3 now for about 4 years now going strong. plenty of highway driving and over 200 street pulls. still alive surprisingly. run 2 giant trans coolers as well. im probably going to go stage 4 next then if that breaks its 6R80 time. IP4000 stall as well.. [email protected] 25psi on the street using Dragy.
What size turbo are you running?
 

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Discussion Starter #20
I've had my 2nd ATF stage 3 now for about 4 years now going strong. plenty of highway driving and over 200 street pulls. still alive surprisingly. run 2 giant trans coolers as well. im probably going to go stage 4 next then if that breaks its 6R80 time. IP4000 stall as well.. [email protected] 25psi on the street using Dragy.
How is the IP4000 stall on the street? I have seen the video, but that video is horrible. Only one time do they get on the car, and the other times they drive like a snail to keep the RPM low and mask the slipping that a loose stall always has.

I notice that going thru FTI directly gives you more options and a $199 lifetime guarantee option. I would at most go with the 3800 hard hit converter. The 6466 hits hard enough with a tight 3200 stall.

ATF only makes a Stage 2 and 3, unless I missed something.

Al
 
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