what stall converter for 383 street performance eng

[moparjohnny]

69 b body torq flite 727 would 2800 to 3200? what brand name? i will use a mild hyd roller camshaft, about 500 lift with headers,750 holley.

 

[Lionized]

Do you have it cammed?
I have a 2400 TCI with a mild cam.

 

[Hemi 354]

I have a 66 Belvedere, with 383, .501lift, 750 cfm carb and 3500 TCI. Probably too much for the street, but it was that way when I got it. I don't use it on the street any longer, just to / from car shows (and an occasional burn out for my grand-daughters)

 

[Roughbird72]

What gear ratio & how heavy of a car? There are many factors to consider when picking a torque converter.
If you can spend the extra $ you can have one of the better converter manufacturers build one to your car.

 

[rumblefish360]

Missing some info for a recomendation.
Cam duration, cars weight, gear ratio and tire size are big.

 

[moparjohnny]

hughes hyd roller 500 lift, duration 208/214, 3.55 gears,275x60x15 rear. 750 holley,headers.727 trans.

 

[rumblefish360]

Stock converter. There's not enough duration to changes converters.
Somewhere around 218/220@.050 a converter change could show a bennifit. In general, at that 218@.050, no converter change is needed. The stock unit can handle it and the car will move well.

 

[Hemi Rebel]

Whats the lobe separation angle (lsa)

 

[Budnicks]

Lets see if I can put this in perspective

Like others have already said, we need a little more info, but this may help

But here's a ballpark opinion from someone whos been there & done that many times,
a stock 383ci HP 68-70 converter isn't a bad converter at all, for what it is...
But it's also not quite as good IMO, as what I will try to describe below...


If you want a little more performance & stall speed so it won't creep in gear
IMO with a 3.55:1 gear 2500rpm stall speed for the street is "probably plenty",
especially with a heavy car, if you have more gear ratio,
than maybe a little higher RPM stall speed...


Anyway;
Mopar performance makes an inexpensive ones
Econo Torque Converter 145k/166k/1775k
relatively good for street use, some occasional track time maybe too,
higher the K#, the higher the stall speed
designed for use with a mild cam, mild engine mods, good 4bbl, moderate gear ratios etc.

Mopar Performance rating 145k for 727tf #P4876870AB,
probably in the neighborhood of about 1800-2000rpm stall speeds,
{a less powerful engine, will have less effective torque/stall speeds, in all categories
I describe here/or below, say 1500rpm maybe with the 145k}
intended as a Dual Purpose, performance upgrade for mostly street use
with a mildly mod. 383ci mostly stock, less cam, less gear, little head mods/stockish etc.
depend on a few other factors, how high it could "actually" stall,
that would still let your trans fully engage at far less than 55mph with a 3.55:1 gear

A little more stall speed,
That's if you want a little more bottom end grunt & easier burnouts...LOL
Might give just a slightly better ET's at track days too,
still fully engage at less than 55mph with a 3.55:1 gear
Mopar Performance rating 166k for 727TF #P4876878AB,
probably in the neighborhood of 2200-2500rpm stall speeds,
Dual purpose, little looser for more performance {more track time} for a more mod. 383ci
like headers, decent intake, some mild heads work, a good 4bbl carb etc., like you have

For a much more aggressive stall speeds
more strip or a street beast/stop lite to stop lite burner
Mopar Performance rating 175k for 727tf #P4876879AB
probably with your type mods IIRC your build questions,
in the neighborhood of 2500-2800rpm stall speeds
{poss. as high as 3000 with a really good & well tuned properly equipped 383ci}
but still relatively OK & will still fully engaged trans at 55mph with a 3.55:1 gear
a little looser when driving around town/stop lite to stop lite, no creep at idle...

I've used that 175k converter a few times, It was a great economical choice,
it's not a race converter by any stretch, they are far more $$$,
you need to know all your specs to order one properly too, like actual
weight, gears, camshaft profile, heads, all the specific mods, with a decent mod. 383ci,
but all good heads, good free flowing exhaust, good headers, well tuned with
good hot ignition & well tuned, intake & carb combo...

IMO it will give you good street/strip {more toward the perf. side, than stock}
dual purpose performance
IMO a little more gear would be better, like a 3.73:1 to 3.91:1 or even 4.10:1
but a 3.55:1 will still work OK too, just not ideal or as fast/quick...
I do tend to side more on the performance aspects than stock stuff....

Mopar Performance converters I listed are considered a 10" converters but measure 10.5"

you can find them in a Mopar Performance catalog
or like from MP dealers, Mancini Racing, maybe even Summit or Jegs

-----------------------------------------------------------------------------------------------

Lets explain how/or why it works a little differently,
especially with aspects to weight or gears;

The heavier the car the more effective "actual" stall speed will be

lighter cars can use more/looser converter to achieve higher "actual" stall speeds

with more gear like a 4.10:1 vs a 3.55:1 you will not get as much effected stall speed
{without a trans-brake anyway},
mainly because of torque multiplication factors from the rear gear ratios,
the car will actually move far easier with lower gears, with far less "actual" effort,
with the lower/steeper gear ratios {higher numerical #'s 4.10:1 vs 3.55:1}

If any or all of that made any sense...

schools out, carry on

good luck & happy Moparing

 

[Hemi Rebel]

I would say 2000 to 2500. Thats an interesting cam profile. Real curious to hear how it runs.

 

[rumblefish360]

Why would anyone want a stall converter that high when the power band of the 208 cam is starting at 1000- 1200rpm? Max! And that would be for an aggressive roller even though it is tiny in size. If it is a street roller grind, starting rpm is more likely at (approx.) idle.