727 performance

[LukeSkywalker]

I replaced the torque converter and oilfilter, everything else is the same as it was.

Before I put the new converter in, I filled it with Dexron3 automatic oil to the point where it came back out when I put it on the side.

Anyway, after I put it all back together I started it up and it sort of didn't want to react like it did with the old converter.

With the old converter I had to apply the breaks when I put it in Drive because it wanted to go right away.

Now it's like it wants alot of rpm to even react.

It felt sort of like driving with a bad clutch. Especially uphill it wants alot of rpm.

Is there a trick to this that I'm missing? My first thought was the link between the shifter and the trans, that maybe if that isn't set 100% it don't act right..?

[Oldschool]

I have always ran type "F" or the newer equivalent "FA" fluid. The "FA" has additives that the older type "F" does not have. Type "F" provides crisper shifts and is supposed to hold up to heat better than the Dexron. It is all I have ever run in all of my Torqueflites. My current 727 is behind and 800+ horsepower Hemi and I have had zero issue in 10 years. I am going to flush it and change the filter tomorrow and am going back with the type "FA". That is all that has ever been in it. I can't say the dexron you are using is causing an issue, but it is a given that type "F" shifts firmer and gives the tranny a less slushy feel.  0.02

[Oldschool]

Is the new torque converter the same stall and flash as the old one?

[LukeSkywalker]

I don't know what converter was in it originally. Found two numbers stamped on it but couldn't find any relations to anything when I searched for it. B385 and 8614. That was it. Starter had eaten away the gears on it so it had to go.


The new one is this one.

Description:    Mopar 727 Torqueflite 11" Street/Strip High Performance Converter (without balance weight)
2400-2700 rpm stall
10" Bolt Circle

 
Features:    - Highest quality 11" on the market
- New Torrington bearings between stator and pump
- Rebuilt sprag assembly
- New pump hub
- New turbine hub
- Computer balanced
- All hubs, pads, splines, pilots, and bushings are parallel, perpendicular, and concentric to one another for a perfect fit and alignment, Guaranteed!
- All torque converters are factory pressure tested and checked for balance before shipping.
- Made in the USA
 
Other:    TECHNICAL NOTES; APPLICATION GUIDE
INSTRUCTION NOTES: APPLICATION CHART
Our 11 inch street converters are designed for the enthusiast with modified engines such as mild cam, dual plane intake, headers, or rear gear modifications. An excellent converter for a mild 440 engine. Rated up to 500 HP.
 
Characteristics:    Part Type: Torque Converters
Part Number: BEP32008
Advertised Flash Stall Rating (rpm): 2400-2700 rpm
Anti-Ballooning Plate: No
Lockup: No
Diameter (in): 11.000 in.
Furnace Brazed: Yes
Balanced: Yes

Is the difference between the "F" oil and Dexron3 enough for it to be noticeable? The 727 is a 1974 version by the way.

[Bullitt-]

Dextron works fine....Sounds like your low on transmission fluid.
Did you recheck fluid after hot with car running in Neutral (not Park)?

[LukeSkywalker]

Dextron works fine....Sounds like your low on transmission fluid.
Did you recheck fluid after hot with car running in Neutral (not Park)?

No, I have not.. Only filled up when cold until the dipstick told me to go away.

I will recheck. I did put like 4 liters / 1 gallon into it though.

[Bullitt-]

No, I have not.. Only filled up when cold until the dipstick told me to go away.

I will recheck. I did put like 4 liters / 1 gallon into it though.

your about 3-4 liters short.

[LukeSkywalker]

It's supposed to take closer to 2 gallons?

[LukeSkywalker]

Don't know what happened there, but it seems to have done the trick.

I think I've read the dipstick wrong or something. I don't know.

Now it reacts when I put it in gear without any pedal.

Nice. Thanks guys

 

[CUDA JAS]

Don't know what happened there, but it seems to have done the trick.

I think I've read the dipstick wrong or something. I don't know.

Now it reacts when I put it in gear without any pedal.

Nice. Thanks guys

 

You have to check the fluid with the engine running and the trans in Neutral....otherwise you got an incorrect reading.

So how do you like the higher stall??

Jason

[LukeSkywalker]

So how do you like the higher stall??

Jason

I don't know. I don't know what higher stall means...

[LukeSkywalker]

You have to check the fluid with the engine running and the trans in Neutral....otherwise you got an incorrect reading.

So how do you like the higher stall??

Jason

The car now runs at a higher rpm. It seems to go to a higher rpm before it gears up, and it makes alot more noise than it used to because of it.
Could this be due to the Torque Converters  Stall rpm (2400-2700rpm). Or might I have adjusted the kickdown wrong or something.
Please tell me this is a normal reaction to a higher stall converter.

Nevermind. Figured it out. - I need to buy a new converter because as it is, it screams blood murder and people stop and stare.
It really sounds like I don't know when to gear up... Lesson learned.

[CUDA JAS]

The car now runs at a higher rpm. It seems to go to a higher rpm before it gears up, and it makes alot more noise than it used to because of it.
Could this be due to the Torque Converters  Stall rpm (2400-2700rpm). Or might I have adjusted the kickdown wrong or something.
Please tell me this is a normal reaction to a higher stall converter.

Nevermind. Figured it out. - I need to buy a new converter because as it is, it screams blood murder and people stop and stare.
It really sounds like I don't know when to gear up... Lesson learned.

did you originally replace the stock convertor with a new convertor, r was it a used one?

Jason

[challengerjeff]

It's supposed to take closer to 2 gallons?

Maybe you did not put enough fluid directly in the new torque converter before installing it?  You might have to give it a few minutes to settle in.  That's what I did for my 727 in my jeep and didn't have any issues.

[LukeSkywalker]

did you originally replace the stock convertor with a new convertor, r was it a used one?

Jason

I replaced old one with a brand new one. The old one had mangled teeth on the starter gears. Had to go. Don't know if it was stock.
With that one I didn't have as high rpm as I do now.

Anyone know what the stall rpm is for the stock converter for a 727?

Maybe you did not put enough fluid directly in the new torque converter before installing it?  You might have to give it a few minutes to settle in.  That's what I did for my 727 in my jeep and didn't have any issues.

Filled it up with oil and tilted it, filled it until oil came out of it when in an upright position.