Torque Converter Question

[cagefightmma]

After installing my Edelbrock S/C, I took it to get dyno'd and my numbers were 396 rwhp and 395 rwtq (uncorrected I believe). He said my TCI 3000 stall speed convertor was slipping during the pull which made my numbers lower than expected. Where the converter slipped, you could see on the dyno graph that it dropped a bit. When it dipped the fuel pump also started running low on fuel so he suggested to go with a BAP. He said with the amount of low end torque, the converter and my 4.10's is not the best combination for a daily driver. This combo worked really well without the S/C. I am thinking about putting my factory converter back in or maybe buying an PTC converter with maybe less stall speed, maybe 200 rpm above stock. Does anyone know what the stock converter stalls at? Any input would be greatly appreciated.

 

[2006BlackGT]

Subscribing since I have a 3500 PTC convertor about ready to install.

 

[Lon86]

Well let me be the first to give you some advice based on my personal experience. I had to get all the clutches and bands replaced in mine because I completely destroyed all the material. It just didn't lock up at all on the dyno. And that was when I was running my non-intercooled whipple setup. So I had it sent to this guy who does custom converters for Lightnings and whatnot. Had triple kevlar discs installed along with a low-stall speed and picked up a ton of torque. The stall speed is now at 2400rpm. Anything above that with 4.10's and street tires will give you zero traction from a stop. And don't even bother putting the factory one back in. The stock stall is around 1600 IIRC. Just spend the dough and get a ptc or fuddle converter. If I could do it again that's what I would do. You'll just wind up spending more money with parts and labor if you don't.

 

[US-1]

Take your TCI and stock converters and throw them into the street....then run over them with a truck. Buy yourself a Precision Industries triple disc converter with 2800-3200 stall speed. Leave the 4.10's in the car.

You'll thank me later.

 

[Marc s]

Take your TCI and stock converters and throw them into the street....then run over them with a truck. Buy yourself a Precision Industries triple disc converter with 2800-3200 stall speed. Leave the 4.10's in the car.

You'll thank me later.

This would be my advice also.

 

[TexasBlownV8]

+1; that's the setup I'm running, with 373 gears.

 

[Chris06GT]

One thing that needs to be said.... NEVER lock a converter up on the dyno..... Bad idea! Running any type of supercharger you are creating more torque.. therefore a 3500 stall behind a blower car is gonna feel like a 4000 and possibly more.... The PTC's are good, but if you thrash on the car hard and have plans for more power, take SD's advice.. even though we have not found the limit of our converters but have them in cars making 600 rwhp

 

[tmcolegr]

See Posts 302 & 313

 

[Greg Hazlett]

Subsribing as well; with my new setup/numbers I could not get a good number at the track and the consensus was my stock TC was holding me back.

Chris-based on my setup-see in sig-can you do anything for me or is a PI triple disc what I need?

 

[cagefightmma]

Take your TCI and stock converters and throw them into the street....then run over them with a truck. Buy yourself a Precision Industries triple disc converter with 2800-3200 stall speed. Leave the 4.10's in the car.

You'll thank me later.

I'll thank you now, thanks lol. Where is the best vendor to buy a PI converter?

 

[cagefightmma]

Thanks guys for your input!!!

 

[US-1]

I'll thank you now, thanks lol. Where is the best vendor to buy a PI converter?

Pick one. Not much markup in them from PI so dealers are all pretty close in pricing.

 

[Airborne2000]

I'll thank you now, thanks lol. Where is the best vendor to buy a PI converter?

Here. http://www.jdsperformance.com/index.asp?initemuid=450&fcmd=item&inmake=0

they come to about $750 (single disk). talk to Artie, he was great to work with when i had to get a new trans. super helpfull and super nice guy.

 

[Greg Hazlett]

At what power level does one need the triple disc vice the single disc?

 

[Airborne2000]

i do not think the 2 diffrent disks one play to much into HP, i think the triple disk is more accurate to transfer power from the engine to the wheel. with a single disk theres more "slop" in it.

i could be wrong but i think its along these lines.

 

[cagefightmma]

Thanks airborne2000.

 

[Chris06GT]

i do not think the 2 diffrent disks one play to much into HP, i think the triple disk is more accurate to transfer power from the engine to the wheel. with a single disk theres more "slop" in it.

i could be wrong but i think its along these lines.

Single, dual, and multi-disc has everything to do with hp.....

The more horsepower, the more clutches it needs to lock a converter up and hold it with no slipping...

 

[Greg Hazlett]

Thanks for the talk Chris, guess we will talk tomorrow?

 

[Airborne2000]

Single, dual, and multi-disc has everything to do with hp.....

The more horsepower, the more clutches it needs to lock a converter up and hold it with no slipping...

thanks, like i said wasnt sure it if was all HP. just guessed

 

[Chris06GT]

Thanks for the talk Chris, guess we will talk tomorrow?

Yes sir!!

thanks, like i said wasnt sure it if was all HP. just guessed

Sure thing!! Horsepower and torque are the 2 main causes of the clutches burning up!