Technical Another Torque Converter Stall Speed?

yeah, it's got compression, but a pretty mild cam to be idling that high

 

There seems to be no problem with him idling it down, he wants to keep the air fuel ratio where its at and he can't do that with a lower idle.
It also sounds like lowing the idle didn't help, if I read correctly.

Too easy everyone's mind who it trying to help, lower the idle and test it, let us know how it acts.

 

Generally, I recommend a stall speed to be around the RPM the engine is running in third gear at around 40MPH.
Usually, if the car is driven around town much of the time, speed limits are around 40ish MPH, depending on where you live.
If thats where a lot of your driving is, you dont want a stall speed higher, due to when the converter is not stalled and not in lockup, it's creating more heat in the trans, which you want to avoid if possible.

Your camshaft grind may not be happy with that though, and may have to come up with a happy medium.
I would certainly try to not go much above 2500RPM, unless most of your driving RPM is higher than that.

GM did have a factory 700R4 stall speed in like Iroc Camaros, that was just around 2000RPM.
That may be an option, if you are not wanting to geat real spendy on a converter.

Dynamic Torque Converters listed out one, DGM35-4 which is 12", 30 spline lockup, 1996 stall speed You should be able to crossreference that number out to other manufactures.

If your 700R4 is a real early trans, like pre 1984, which had a 27 spline input shaft, there isn't really any higher than normal factory stall speeds of around 1400-1600RPM and will be in the mercy of HP converter companies for a converter.

I assume you dont really know what you really have in there now for a stall speed.

Factory stall speeds for those converters were all over the board, from a low of 1211-1996, depending on the car model.

Bill

 

I have a cam in the original 289 in my Fairlane that is very similar 218/228 duration @ 050, it idles like a pup at 700rpm with 14 degrees initial advance. It’s off idle performance even with a stock converter was more than acceptable and a 2800 converter was on the too loose side. I would be tempted to go over timing and carb again because there should be an abundance of low end torque especially with the cid.
With that little cam and the stock converter my 64 ran 14.0x @ 98 mph.