IMPALA SS 07

do they make any type of stall converters for our cars?

Compg

ZZperformance.com makes about any speed stall you can think of for a 4T65E which we have. But, with the 5.3 the stall speed is actually a pretty good set up. You don't want a much tighter stall because you would have no traction in the first gear area.
Tate

IMPALA SS 07

thanks for the info

SILVER LS4

You could try a stock 6 cylinder stall. They are a little smaller, giving a little higher stall, not sure on exact no.s though. GM usually has higher stalls on smaller motored vehicles vs the larger ones. I put a 4.3 liter stall im my old '94 caprice with an lt-1 and made a bit of a diff. Some people are putting 6 cylinder stalls in there Trailblazer SS's to raise the stall also. A gm stock tc is usually a little cheaper than an aftermarket also.

20SS07

Soooo, big n00b question here but, what's a stall converter do?

live2ride

I may not get all the terms correct but here goes.

A torque converter (TC) is used to get the power from the engine through the transmission to the drive line. It is between the engine and transmission. It operates in place of a clutch on a manual transmission. As the engine speed goes up, fluid is spun around inside causing the internal parts of the TC to eventually spin at about the same rate transferring the engine speed to the input of the transmission.

Stall speed is the point where the engine RPM is about the same as the input RPM of the transmission. Generally smaller diameter TC’s allow the engine to rev up higher (more torque) to get the car moving faster. If traction is lacking and is not improved increasing the stall will make things worse.

BuffaloSS

iTrader: (3)

That's pretty much it in a nutshell.

http://auto.howstuffworks.com/torque-converter.htm

DavidGXP

iTrader: (14)

Just do 3.69 gears with 3" exhaust and get some stickier tires. I know that traction would be a problem but on the freeway our cars would be terrifying! F having a 2spd powerglide when going down the 1/4 mile. We should be toping 3rd at the end of the track.

stie6926

Here's a curveball. I think that the stall on our trannies is TOO HIGH! In city driving, the cars could achieve better fuel economy if they didn't have to rev to 2500-3000rpm to get any acceleration. If the converters locked in earlier, the rpms would be much lower, causing better mileage. The V8s have MORE than enough torque too. Any thoughts?

Nacho SS

iTrader: (4)

More torque for our cars would mean even less traction...which is at a premium for us now.

stie6926

Fair Enough. It would be worth it to me to feather the throttle if it meant better than 14.5mpg in the city.

MonteNorth

STIE6926 is correct...This is a case of less is more. A torque convertor locking sooner will not only give better gas milage but just might be faster to in poor traction conditions.....hmm

Nacho SS

iTrader: (4)

I am honestly not that worried about gas mileage in this car. If I wanted something with great mileage, I would have pursued a import econobox with a 2.0L sewing machine. I purchased my SS with the knowledge that it is a V8, and loves to drink gas...I am enjoying everything about it; the sound, the power, the attention....I just hate FWD and a tighter converter would just make our FWD problems even worse....

Just my take on this, the stocker is good where it is....

Glen Koenig

A high stall TC in a FWD street car? Do they even put them in FWD drag cars?

Now, a tighter converter would be good, but I'm not sure that you're going to find a more efficient TC than what you get from the general. They've been experimenting with more efficient stators for a few years now. I got one in a 3900 stall 9" in my 96 Impala and it's very efficient. You'd hardly know it was a 3900 stall TC and it runs very high MPH to the ET in the 1/4.

Count of Monte Carlo

We stall at 3000. Yeah its very loose...I'm sure they did that for the DOD.

Glen Koenig

Who is we? Did you replace your TC?

The stock stall is most likely around 1800 or so and is certainly not loose. Likewise, I'd bet that DOD is rarely ever active when the TCC is unlocked. So the stall of the TC really isn't relevant to DOD.

****edit
A high stall TC is a great mod for real SOTP performance gains, in a RWD vehicle. It'll pin you back in the seat and get 4000+ pounds out of the hole in hurry, IF YOU HAVE TRACTION!!!. However, it's counter intuitive in a FWD street car where getting traction for a hard launch is a HUGE challenge. my $.02

06 SS

The stock stall is at least 2800 brake stall and has an extremely low STR. It is the loosest converter I have ever driven. The STR of the stall (IMO) is set that loose to mask the switching point of the DoD system so it is invisible to the occupants.

Count of Monte Carlo

hehe no I have not, and we as in cars with the LS4. Actually a '96 Monte Carlo 3100 has a 1800 RPM stall for the sake of trivia. DOD transition is noticable sometimes when cold. A time when the TCC is not engauged... It would defintealy be felt with a tighter converter

Slow Z28

iTrader: (19)

Just since I've had a bit of time to drive the car now, and I don't know how many of you have any experience with aftermarket stalled A4 f-body LS1 cars(i've had 3)

This thing drives tighter than my Yank TP4400
It's a bit tighter than my TCT 4000 nitrous converter
And the kicker, it drives EXACTLY like my Vigilante 3200 stall equipped stock long block '98 Z28 did. I mean to a "T". It's pretty badass, haha.

You guys would know better than me any factory ratings since I haven't read too much about 'em. But for real world, that's what it feels like

06 SS

It feels looser than my 9" 2800 stall behind the LT1 in my Caprice, but that has a pretty high STR @~2.5