727 question

[tactransman]

A stock converter should be fine ,but a little stall (2500) would be better.

[72hemi]

Since I will probably have to purchase a converter then I should probably go ahead and get the 2500? I have only driven automatics with stock converters how will the stall change how it drives on the street?

[71chally416]

I had more problems when I used to run the kickdown linkage. They would invariably start slipping on the 2-3 shift to the point I would have to let off to get it to shift. That's when I knew the clutches were toasted.
One that I had in my old 383 Belvedere lasted about 6 months, and it was just a low 14 second car. Didn't have any issues with the bands.

I ran a low 12 second 440 Chally DD for 4 years beating the crap out of it on the street and track, my 318 Cuda DD with a 904 for 3 years running it at Atco at least a few times a month (12.80's) and my latest stroker for 18 months (or weekends) with a Dynamic built 904. Never once had to pull the tranny from any of those cars for any reason and two were my sole means of getting around in the Winter and summer. All had the Turbo Action VB. Maybe I've just been real lucky?  (I'm knocking on wood.... )

[Chryco Psycho]

the stall converter lets the engine get into the powerband Before puuting a load on the engine so it hits harder , you just want to be sure you are running above the stall RPM on the highway so you dan`t have the converter slipping constantly & overheating the trans

[72hemi]

Good to know thanks.

[tactransman]

Since I will probably have to purchase a converter then I should probably go ahead and get the 2500? I have only driven automatics with stock converters how will the stall change how it drives on the street?

A 2500 stall will feel pretty "normal" in regular street driving,you will only feel the "stall" when you nail it. You have to get up to the 3500 stall RPM before they feel "slippy" with normal take off.

[72hemi]

Great, thanks.

[tactransman]

72,here is the pic I was looking for earlier in this thread and I just found it. 

[72hemi]

Great, thanks.

[71chally416]

A poorly made convertor just slips all the time, like a slipping clutch does with a stickshift and hurts your MPH when you race and your gas mileage all the time. It also creates a lot of heat inside the tranny.

A well built convertor matched to the TQ of the motor will act much like a decent stocker with a little stall, even if it has a 4,000rpm stall speed, but when called on will stall at it's rated RPM. Otherwise, you will hardly ever notice it's there.

Any company selling convertors with a rated stall for any motor the tranny bolts to doesn't know how to build a convertor. A low compression 340 will have a completely different stall than a 440 with high compression with the same exact convertor. I would avoid any convertor company that doesn't even ask, or sells a "One convertor fits all and has XXXX stall speed" product.      

[tactransman]

The TCI Break Away, Street Fighter and Super Street Fighter converters are descent "off the shelf " converters. I have had many customers use them with very satisfied results.

You get more with a "custom" converter built specifically for YOUR application that is for sure.

[71chally416]

Much like a carb, it needs to be tailored to your combo. Unfortunately you can't change the jets and squirters in a convertor to make it right and it's a real pain to change.   

[dodge freak 2]

Not sure what my trans guy did to my manual vavle body but my 904 trans just barely chrips the tires on part throttle shifts. On full throttle he said to lift off the gas half way and then shift.

The line pressure is up all the way, I checked that.

He was saying the best way is to get a 727 trans and that trans can be set up how ever you like. He said he could set a 727 trans with a manual vavle body just chrip the tires and both part throttle and full throttle shifts. Said the 904 isn't as friendly or strong.

Its lasting thou, been 4 years or so and I don't baby it and sometimes forget to get of the gas between shifts.

[tactransman]

You should not have to let off the gas to shift it,that would not work very good at the drag strip for good E.T.'s. 

[71chally416]

   It's not a stickshift