Well, I'm getting a new tranny fairly soon, most likely a Pro-Built 700R4. I'm also going to invest in a new converter, since my ACT is not lockup. Right now I have a 2600 RPM stall in there. I was told to go with this so that it's more fun to drive on the street. The only problem is....it is a DOG when I launch it at the track. I am only pulling 2.1 60' times, and that is with NO tire spin with 3.73s, and I have lots of suspension goodies as well as slicks. I was thinking around 3200 or 3400 would be good for my setup (in sig), but I'm not sure. Anyone have a good guess? Plus, I don't understand how a higher stall converter would be less fun to drive on the street as I was told, so could anyone explain that for me? I'm going to get a quality converter too, most likely a Vigilante, so the efficiency will be there to make it streetable. Any suggestions would be greatly appreciated. Thanks in advance.

 

Dana will help you with the stall speed when you order the tranny & converter.

 

The problem with stall speeds over about 3,200-3,500 in a street car is heat. Higher stall converters are much smaller than stock or mild performance replacement converters, so a lot more heat in generated by the converter because it is smaller and hold less fluid. The fact that it slips 90% of the time you are driving also doesn't help anything. To really do this right you will need a big trans cooler with a dedicated electric fan.

The other problem is the lockup feature. Lockup converters are nearly twice the price of non-lockups. Also, the selection of high stall lockup converters is very limited. If you do drive the car on the street a lot, particularly at highway speeds, a lockup converter is almost a necessity. Without lockup a lot of heat is generated, and gas mileage will be worse.

I think you need to be very realistic about how much time the car spends on the street vs the track. If the car is a daily driver you probably don't want to go overboard with the stall speed. If the car is a track toy that is tagged then do whatever runs best at the strip.

 

CamaroX84

First some questions for you the converter you have is it 12, 11, 10 or 9.5 inch and lockup or non. What is your full times and mph for the 1/4, 1000, 660, 330 and 60ft. how high can you stall the ACT thats in the car now.

The input on this board is most of the time very conservative and or uninformed on today's newest lock up converters. The place to get some real good information is

http://www.ls1tech.com/forums/forumdisplay.php?f=13

You will find almost everyone running 4,000 or more lock up style stall converters in their street cars.
I went with more stall than most people recommended to me and now want to send it back for more. Next time I have the converter out, it will be changed from 3,600 to 4,000.

Jerry

 

I run a Yank ST 3500 stall with a cam similar as yours. (CompCams XE 230/236 112 hyd roller). It's so streetable I drive it everyday with no problems. A common misconception with running a high stall is the car doesn't get moving until it's at its rated stall speed. Leaving normal from a stoplight, my car starts moving at 1800 rpms. With lower rear end gears like yours, the sluggish feeling down low is minimized. That's one of the benefits of getting a HIGH quality converter like Vig or Yank...you can drive around with a high stall with minimal loss in efficiency or streetability. But a trans cooler is always mandatory.

For a setup like yours I'd get no less than a 3200 stall, but that's just IMO.

High stall + traction=