hypotheticaly speaking lets say i had a fully built motor, Greddy or JWT TT putting down 450HP+. i have a 5AT and am looking to go F/I soon and am looking at every option possible. i want it done right the first time so im either going with TN ST on stock block,which is the cheapest option or going all out tt built motor. looking for a "safe" setup. please help I HAVE BEEN SEARCHING for the last 4hrs and havent really found much for the 5AT.
thnx in advance

 

Valve Body is the only cost effective upgrade right now..

 

thats all that would be needed? how much for valve body + install. thats the only thing i have read about when i searched. i geuss thats y its the only thing lol. so the auto tranny would have no problems handling 450+ with this upgrade?

 

Its been agreed on a while back that its not a good idea to push the stock 5AT tranny past 450whp. If your going to go past that # you should wait till GTM gets theirs out on the market. 450 + your going to need upgraded clutch packs,bands,etc.. Or you could just put a TH400 in it, but thats probably a little extreme for a daily driver.

SGP has an upgraded tranny package out now, but no one has posted a review on it yet(that I know of)...

 

Could always get the level 10 parts. They may not be the best people to deal with anymore...but nobody else has introduced anything for the 5AT yet.

 

Tranny cooler

 

Contact GTM and SGP - get details from both companies, and then make your decision.

 

At a minimum I would say upgrade the valve body and torque converter and get a very, very good trans cooler. Also might be a good idea to get a tran fluid temp gauge and monitor your temps. Heat is the killer of the 5AT.

There will be a review of the SGP race 5AT in a couple of weeks.

 

damn was thinking of going TT with built motor possibly. guess ill have to stick with the ST setup.

 

With 5AT or 6MT, for high power, you have to build the tranny though certainly the cost is likely less and better proven with the 6MT. It's just part of package that comes with high hp. I wouldn't give up on TT if you've got the funds to do it right.

Ron, are you getting it put in at FP? It'd be interesting to compare our two setups side by side...

 

+1... I have all the upgrades Ron listed and would also recommend them. Before I go with the TH400, I'll wait for your review. Whats taking SGP so long?

 

+1

SGP has quite a few options as far as beefing up the AT is concerned. Valve body is not the only option these days.

 

Its the torque levels that do it, not your peak whp. Horsepower is just a factor of torque at engine speed. So a ST won't be really any easier on your transmission at WOT because it has that huge torque spike in the middle of the power band even if it doesn't have the peak hp of the TT. If you're generating 400+ lb-ft of torque at any engine speed, that's going to cause slippage, generate heat and slowly kill your transmission.

Tranny temp gauge, cooler w/ a temp regulated bypass, torque converter and valve body upgrade will do wonders until you can do a clutch pack rebuild. GTM has something in the works, SGP and SFR already have options available.

 

Like everyone else said, torque converter and tranny cooler for sure.

TH400 is not for the tame, daily driver type of person so I'd definitely skip that.

 

I have the SGP VB, it shifts pretty good. The TCU needs to relearn the shifting in auto mode, but its getting their. Pretty cool to have just a few basic NA mods and catch 2nd and 3rd with 285 tires when gunning it! Greddy TT going in soon.

I have a B&M 70268 cooler that I am installing after the factory cooler, it should knock off 15F-20F off the temps according to B&M. It has a low temp bypass feature built into it.
http://store.summitracing.com/partde...5&autoview=sku

I am also installing a B&M 80277 remote filter kit since the factory trans has just a screen filter. This will also add more fuid capacity
http://store.summitracing.com/partde...5&autoview=sku

I know the factory trans has a temp sensor for the TCU, is their anyway to access its info, maybe Cypher?

 

approx how much would a new torque converter and tranny cooler run with installation included. my guess would be about 2G's. just seeing what people who have these upgrades are paying

 

I had no idea GTM was gonna beef up the auto. Im still waiting on the gearset we heard about 2 years ago for the 6MT!

 

also would the tranny cooler really be necessary even if the car will not be tracked just everyday driving and full wot maybe 2 times a week. i dont drive much and when i do its babied for the most part. just want the power for when its needed thats all thnx

 

Trans coolers are under $100 for even a huge one. Mine was $50. Youll need to top off your fluid so a quart of matic-j is ~$9.00. They are super easy to install. A shop should be able to do it in 1hr MAX! Dependong on the labor rates, 50-100 MAX for a basic cooler install. So total could be $150 or so. For that cost its worth it for sure.

Now if you go overkill with braided lines etc and a HUGE cooler it will get MUCH more expensive.

 

oh i figured the cooler would be like a grand i have no idea. what aboot the torque converter? isnt that close to a grand? and i wouldnt need overkill b/c as stated above no for track use just pretty much weekend driven and some weekdays for a cruise