GM 63, GM 63C, GM 63CW GM 71, GM 71C, GM 71CW GM 42, GM 42C, GM 42CW GM 73, GM 73C, GM 73CW
GM 64 GM 77 GM 72B, GM 78 GM 66, GM 68, GM 69, GM 79
Approx. Stall 1400-1475 Approx. Stall 1500-1750 Approx. Stall 1800-2200 Approx. Stall 2300-2900


the codes also describe the lining and weather or not its valved. I have no idea of what would be a good appliction for our transmission. Anyone wanna chime in on what the best application would be?

i'll try this again

GM 63, GM 63C, GM 63CW, GM 64, Approx. Stall 1400-1475.. GM 71, GM 71C, GM 71CW, GM 77, Approx. Stall 1500-1750.. GM 42, GM 42C, GM 42CW, GM 72B, GM 78, Approx. Stall 1800-2200.. GM 73, GM 73C, GM 73CW, GM 66, GM 68, GM 69, GM 79, Approx. Stall 2300-2900

i am lost.



I must confess... I feel like a monster!

These are the rpo codes for each converter then it shows their approx stall speed. So if you went and did a search for a particular torque converter say with a stall speed of 1400-1475 you'd look at these codes:
GM 63, GM 63C, GM 63CW, GM 64

ok the the code with a c stands for light carbon lining the cw stand for woven carbon lining, the codes with out out anything stand for paper lining.

so the rpo code and then its approximate lockup speed:
GM 71, GM 71C, GM 71CW, GM 77 Approx. Stall 1500-1750

GM 42, GM 42C, GM 42CW, GM 72B, GM 78, Approx. Stall 1800-2200


GM 73, GM 73C, GM 73CW, GM 66, GM 68, GM 69, GM 79, Approx. Stall 2300-2900

so if I wanted a stall speed of 2700 I'd chose this stall coverter gm 73c

these are all stall converters that have the same size 245mm bolt pads. I'm 95% positive that any of these converters will work with our transmissions.

If anyone cares this is a much cheaper route then going with a custom built stall converter.

im confused as hell



8 psi with m62 and IAT under 100

^^ lol Right!!!




Best time to date - 13.07@109.16 - AUTO!!

Maybe I can help with the confusion.

First lets limit the RPO's to the ones people would be most interested in.....the best one...the woven carbon or "CW"

So:

GM 63CW Stalls @ 1400-1475

GM 71CW Stalls @ 1500-1750

GM 42CW Stalls @ 1800-2200

GM 73CW Stalls @ 2300-2900


This is the way I understand his post to mean....I could be wrong since the stall ranges seem to be very large and probly his list of RPO's from beginning to end match the stall speeds beginning to end? Not sure.

Now, I would say, RPO's alone would be a pain in the ass since I've yet to see an "RPO -> unit make/model" search ever be done save for dealership apps which I'm sure do exist.
If there was an RPO to unit make/model it would be nice to search for the RPO and then find what cars these were installed on and then go to your local autoparts stores and get one of those for that make/model.

I could be way off here, but this is how I understand his post to mean.



"Never argue with an idiot. They'll drag you down to their level, then beat you with experience!" -Anonymous

riiiiiiiiiiiiiiiiight...

and that means what to us exactly?



I must confess... I feel like a monster!

That means instead of spending $300 to have a custom torque converter made you can spend $126 for a high stall converter that already fits our application. Like this one
http://cgi.ebay.com/ebaymotors/GM-73CW-TORQUE-CONVERTER-REBUILT-125C-440-TR-4T40E-4T60_W0QQitemZ200308895157QQcmdZViewItemQQptZMotors_Car_Truck_Parts_Accessories?hash=item2ea3572db5

And that one above will work for a auto ecotec?

adam I dont know I havent done any research on the eco

well blow me down, jay.

you've schooled me.

poor star, after all that work getting a yank.



I must confess... I feel like a monster!

I'm here to help bro!

Brad I remembered you telling me that someones stall speed was higher then mine. When were on the phone that night when I was tuning my shift speeds. So thinking about it a bit and looked into it on a hunch that gm used different stall converters for the different vehicles and sports packages. I think I was right. heres where I found this info
I didnt think Id find it again its a pdf site so its a big file.

http://transtarindustries.net/catDownload.asp?ID=813

so a GM52 "should fit, and bolt up fine and have a stall speed of 2400-2600.
I wonder if a GM73CW would fit.

any info on one for a auto ecotec?

Ecotec 4t40e is the same as the LD9 4t40e.... torque converter wise.

or is it?



I must confess... I feel like a monster!

I've posted this info previously, with DACCO catalog excerts here: Stock Torque Converters, 3 Speed Geaqrs and more...

These converters fit the TH125C, 440-T4, 4T40E, 4T60E and 4T65E transmissions.

z yaaaa wrote:

well blow me down, jay.

you've schooled me.

poor star, after all that work getting a yank.

yanks less confusing so ill stick with that
only spent 100 doll hairs more



8 psi with m62 and IAT under 100