ONE MORE TQ CONVERTER THREAD

You will ABSOLUTELY need to equip a tranny cooler.

Also, do not be tempted to equip a TC that is so "over the top" that it is not reasonably streetable...

I have heard many good things about PI.

Too Slow said:

sorry i forgot to mention, i already have a B&M tranny cooler. i talked to a pi representative before and he told me that since its my daily driver that he recommends a 3000 stall and if i plan on going supercharged in the future to get the multi disk, but good lord it was like $1100 or so. then on top of that i've heard that with my car i will need a tune even though he said i wouldn't.

Click to expand...

You will need a tune to properly program the TC lock up schedule or it'll shift like crap.

I would also recommend a shift kit, preferrably a Jmod valve body or the shifts will feel a bit "soft."

contact these guys....
http://www.bc-automotive.com/

Transgo street/strip setting shift kit and a PI 3200 stall! You will be really happy...trust me! With out a tune the car will shift at part throttle.....not really bad just feels really responsive....once you get it tuned the converter will lock up at 3/4 throttle and still be very streetalbe.....kinda wish I went with a 3600 stall....on 17 in rims with MT DR's I now cut high 1.68 60 fts! You will absoulutely love it!

"ED"

Transgo is generally not recommended in the 4R70W community.

Do the J-mod and never look back. As long as you have the correct sized drill bits, you can do it yourself and save money.

Here is the mother load of 4R70W knowledge, enjoy:
http://www.tccoa.com/articles/tranny/index.html

I believe Circle D is located in the houston area. They make a nice converter. The reason Precision Industries gets a bad name sometimes is because of the clutch material they use. Its a paper material and even the triple discs are prone to flaking especially if locking up under full throttle. I personally went with a custom built unit that has a billet cover which is much more durable and allows for a very large lock-up area for the clutch. If you look at the BC automotive converter that is the same design I went with. Sometimes referred to as a spaceship converter the cover is ~11" and carved out of a solid piece of billet. Because of this, it is much more durable but also more expensive (the cover alone was over $400.00 which is roughly the price of the entire edge unit). This large cover allows for a high carbon clutch with approximately twice the surface area of the stock clutch. Then there is an anti-ballooning plate and then a 9.5" outside cover. My converter stalls at about 3300rpms and it makes a huge difference in the amount of torque that gets transferred to the rear wheels upon take-off. Anyways, there are a lot of aspects that go into choosing a torque converter but don't bother buying a cheaply made piece as you will spend more money in the long run. As to tuning, if you have a hand held tuner you can adjust some of the parameters yourself but a custom dyno tune will benefit most because you can adjust lock-up and part throttle shift rpms and firmness. One last thing though, a converter that stalls high enough to make a differnece will feel kinda loose at part throttle and even a really agressive shift kit will mellow out with a big converter. Thats just the nature of the beast.