Hey all, What is the highest Streetable stall anyone here has achieved? I am just looking for input to see what everyone thinks....My car is an 88 A4 car with 2.59 gears. Aside from an air foil, K&N w/cut lid, SLP runners and flowmaster Mufflers my car is stock. Does anyone have any advice as to what the highest stall converter is that would keep my car Streetable, yet provide a decent launch?
Thanks!
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Think a 2600 is good from my experiance with it. But I do know another vette owner that had a 2800 stall and he said it was almost over kill.

So thats my .02 There are few C5 Guys running some higher stalls 3000 and up.
-=Rick

 

Thanks for the input Vettetech. I'll be purchasing a Converter with an advertised stall of 3200 and have been told it should stall lower, based on my engine torque. Hopefully about 2800 I just am hoping it will act normally moderate acceleration.....

 

What Brand are you going with?

 

3200 is too high, I wouldnt go with anything over 24-2600 in the L98.

You dont want the stall to happen at the torque peak, you want it lower.

 

Vigilante, don't know the part #

 

vader, do you think it will actually stall at 3200?

 

I agree you want to keep the stall lower within the engine's power band. At 3,000+, you would launch hard, but the engine is all through just about 1,500-1,800 rpm's later. A lower stall will keep you in the fat part of the torque curve longer. Different answer if you raise the power curve too by changing cams and induction.

 

Interesting....An excuse for some power mods maybe....Man i really want this converter to work for me. So far we all agree driveability will suffer?

 

Driveability is a personal preference thing, I've ridden in a car with a high stall TC like that and it felt awkward, feels like the transmission is slipping. That would drive me nuts.

I would personally go no higher than 2400 on a car I drive every day, maybe 2600 for a drag car.

At least with Vigilante you can have the converter stall changed once for free, unless they changed that.

 

Anyother consideration you need to take is your rear-end gearing. I had a 3000rpm vigilanti and my 3.73 blew up and I replaced it with a 3.45 it felt like it slipped more at lower speeds. This makes sense because at the same speed you will be at a lower RPM, and if its below stall speed you will not see full lockup.
It also would depend on converter brand, some will be more efficent below the stall speed and thus feel firmer then others.
I really like my 2700, below about 40mph at low throttle input it definately feels loose, but you get use to it.

 

Vader is correct. you want the stall to be about 400 rpm UNDER peak torque. 2600-2800 would be good.

remember a 3200 stall will not stall out that far if you are BRAKE stalling the car. it will most likely stall to about 2600-2800 depending on torque outputs and we all know L98's make alot of torque.

now if you FLASH stall the car it WILL hit at 3200 rpm.

as for drivability you'll lose alittle gas milage and she won't be a dyno queen cause high stalls eat up HP due to the "Looseness" of the stall converter.

if you want i can give you a number to a friend that builds stall converters and knows his stuff. you won't get a "Clone" stall converter. with his you can actually tell him "How" you want it to perform. want it to hit hard on the launch or come in easy? there is alot he can do to the stall to get what you want with a custom build not like what you buy from jegs or summit again these are clones and massed produced.

ask for Chris and tell him Mad-Mic with the loud @ss red C4 vette from FBC sent ya
http://www.ccmconverters.com/

he will be restalling my 2600 stall that i had sitting for awhile and i will be putting it in very soon ging with a 3200 stall but with a LT1 intake/ZZ409 cam/388 stroker/with a 150 shot

and if your skeptical of his verters goto http://www.easternfbody.com and ask around. that is one of my car clubs i'm in and they are the worlds largest 4th Gen FBody club in the world

 

I have a 2600 Vigilanti in my stock long block Crossfire. It certainly is too much. The car has the stock 3.07 gears and is a daily driver.

RACE ON!!!

[EDIT]"It certainly is too much." Should read, "It certainly ISN'T too much. Sorry, all.

 

I have a 2800 in my LT1 car. That is perfect for dual purpose.(in the LT1, L98 would be much different).

Your best bet is to call the torque converter company and give them your specs and plans for driving and they will help you pick a stall.

 

Interesting....An excuse for some power mods maybe

The hard thing about C-4's is they are so well balanced from the factory, we cannot make just a mod or two and improve much. But, YES, once you sink the needle in, it is hard to stop!

 

I have a 3100 rpm vigilante with a 3.07 rear. The car is very streetable at part throttle.My car is modded and at the dragstrip with dragradials it has dropped into the low 12's@112mph with the addition of the converter

 

Thanks to EVERY one of you for much needed helpful input. At last a thread that is somehow not gone south. lol You all make very interesting points. mad-mic, The gentelman you are referring to above, would he (or anybody for that matter) be able to Re-stall the 3200 converter that i have? (will have soon) Thanks for the info all!

 

If its a vigilante converter, they should change the stall once for you free of charge.

 

smallblock, got a set of 3.07s laying around?

 

vader, do they do that even if i am not the original purchaser? I have no reciepts or anything. Or do they go but a serial on the unit to see if it has been done already? That would be sweet