Yes. They want $6k. Any ideas how to cut that in half? That's the point.

But let's just have an overall blanket thread to cover anything related to the AT. And shut down the forum. No need to have one when we can just call the vendors all day and ask them what failed in every tranny they have seen. I bet they would like that.:gtfo2:

So when you called did you ask about the failure point? I've talked to Level10 before in the past and they were pretty up front with things and were great at explaining things when asked. You can cut the cost by ordering the rebuild kit from them and getting a local trusted shop to do the rebuild if that is an option. You can order the VB, TQ converter, and rebuild kit from Level10 for just under half that price. Past that you would be on your own to pull the tranny and take it to someone you trust so cost will vary.

Literally someone in this thread said "Nope, I never asked pat@level10 but he said it was shot..." which is directly linked to your question of "What was the critical failure mode?". But if you did call Level10 and asked, because honestly a highly trained professional will give you a more direct, honest, and explanatory answer to your question then 90% of the people on this forum (in regards to that exact question just due to experience and expertise) in relation to our auto transmissions. But damn, if their answer to you was "give me $6k for the answer" that reflects mighty poorly on their customer service.

You are doing no different here asking the members of this forum for the answer then picking up the phone and asking people that actually work with our transmission frequently; the difference being the trained professionals at Level10 most likely have the answer. I would hope they could answer questions rather than just say "give me money" and not answer anything in regards to their products, services, or the like.

And to follow that up he said the built tranny can hold 500whp and 650wtq. Which dismisses the "torque is what kills trannys" mindset here. He explained it as the clutch packs try to pull tq from them and with more than 500hp it can't do it quick enough. He also said the only build kit he sells usually is to customers outside the US where they don't have the means to ship the AT to their facility. They do not recommend having a tranny shop do the work as these units are more complex then most ( which I believe) and most shops won't get it right. They also have the magic touch on the shift tables that most tuners can't get right. However, they will walk any tuner through a proper table setup if they send a shot over on what they are looking at.

Shipping is only $300 there and back apparently.

We got no where near the sub $3k mark.

Look bud, I don't even own an AT! I'm just trying to shed some light on the subject and get it out in the open. Yes, I could for curiosity sake find all this out on my own...what good is that? You have the mindset of protesting the whole reason we are here.

Well I have a 7AT and want to boost so I am here! Lol... but from what I understood the AT can Handel well over 500HP.. it's the TQ that it cannot handle.

I know, crazy right? Thats what Pat said to me.

Level10 updated their site with the rebuild kit for $998 for the JR710E/RE7R01A tranny.

Trust me, as an AWD owner addressing the tranny is my only option. I want the same as you, but i feel we both might of addressed it incorrectly. Thank you for clarify what Level10 said and posting the information you obtained.

Looks like there full tranny service for ours is now $4,998.00, plus the freight shipping. So around ~$5300-5500. Or you could get their VB upgrade ($998), rebuild kit ($998), and TQ converter upgrade ($798) for about $2900 after all the shipping back and forth; pay the 8-12 hours labor at a shop you trust and cross your fingers they know the 7speed and spring for upgraded flex plate as well ($900-1200) and end up spending the same amount.

Considering the amount of threads I've read about broken flex plates I feel its worth mentioning that, as part of the AT system, that it also is a know point of failure and should be addressed when upgrading.

If 650WTQ is the limit of a built AT then that's pretty decent considering that should be in the 800WHP range around 7000rpms, accounting for our engines typical TQ loss. That is a highly speculated number, however, but puts into prospective the justification of the money it would cost to upgrade the AT.

So in their bulletproof package they upgrade the flex plate also?

I am not sure. They never mention it (online), nor have I ever heard anyone mention level10 upgrading it. I know there are two off companies that make them as well as Fast Intentions.

It's why I mentioned getting one separate from the other parts. Better to account for the cost then have it dropped on you, you know.

Called and talked to Pat@Level10, flex plate is not included in all that. He did mention again though that its the higher gears that fail due to TQ slippage.

Yeah, but your limited to 500whp with these bulletproof setups. So you will be limited to just over 500wtq then also unless you could get 500whp and 650wtq out of a 3.7l gas engine.

There are a couple of guys making big horsepower on 7AT built by FI (have no idea if its similar or the same as level10).

620whp: http://www.the370z.com/forced-induct...ml#post3119253

660whp: http://www.the370z.com/forced-induct...ml#post3507693

this info came from the FI Finished Builds sticky

How did i miss this thread for a few weeks? I am in the middle of planning my boosted 7AT build from scratch. So a thread like this is very important to me, I havent bought a TT or SC kit yet, but I have been very keen on an AAM TT Kit.

Hey Lt, so what exactly was wrong with the tune, was it something to do with line pressure? Who did the original tune that had something wrong with it and who had to fix the tune to make the AT run better, was it LVL10 or the original tuner? Would like to know this so when I have my Z tuned after the forced induction build I know what I must tell my tuner.

Im a bit worried that you had to send your trans a handful of times to LVL10 to get the "bulletproof" package. I would have thought you would only need it once!? So are you saying that even a bad tune can kill a bulletproof trans??

Hmm, this is what concerns me. Makes me want to drop my FI choice from TT back down to SC...

So if I still choose a TT kit, can I get Seb to eTune my Z to stay under 400wtq?


I spoke to FI recently. They told me their record breaking 677whp 7AT Z had the following trans upgrades:

Exedy Clutch packs
FI CNC Flex Plate
Custom Shim plates (in-house job only, not sold outside of FI)
19 Row Trans cooler.
Engine and Transmission tuned by Seb @ SpecialtyZ
I am insure if they had a VB or TQ converter upgrade, I forgot to ask FI.

I am interested to know what the shim plates are. But I think I remember LVL10 saying it is included in their rebuild kit.


Looks like the Infiniti 7AT rebuild kit is $200 more than the Z 7AT rebuild kit.
BULLETPROOF KIT 370Z

Is that because the Infiniti is AWD or something? But the trans have thr same part number.

Inspite of all this. My plans for the trans after it gets boosted is to:

Send my VB in from Australia to LVL10 for the upgrade
Either purchase the LVL10 rebuild kit or just the Exedy Clutch packs and get a local trans shop to install them
Get my TQ converter upgraded locally
Trans cooler
Have engine and trans tuned specifically to survive (hopefully)

Wish there was a cheaper way to strengthen the 7AT. I think all of the above is still going to cost alot more than a few thousand :(

Oh and, another thing I was hoping someone could find out for me as I asked in another thread, is if the JR711E/RE7R01B transmission could replace the JR710E/RE7R01A in the 370Z. The former has a higher torque rating so it maybe cheaper to just swap that in if it fits. Perhaps somebody could ring LVL10 for me and find out if they know?

@shadow85, yeah the transmission was sent and returned a handful of times and the tuner did not do anything to account for line pressure or shift points. This made the transmission shred through it's clutch packs and disengage. Pat was tired of having the same issue over and over and the tuner not getting it so he had it shipped to him. He had a tuner he trusted go over and fix the issues.

Nice!