rebuilt th400 and 3000k stall isuess

[ulises milanez]

hi every one and thanks in advance had my th400 rebuilt and instaled a 3000k stall converter and am having issues with it when driving it sound like rms are really high and it feels like its slipping when taking of or getting on it any ideas what it can be ?

[KQQL IT]

The converter. Makes it twice as bad with tall gears. 3:42 or taller makes it seem twice as bad
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[ulises milanez]

I believe i have 373 gears
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[INSIDIOUS '86]

.what do you think they mean when they say stall? It's called a dynaflow effect

Your converter is flashing higher to put you closer to where the engine makes power when you have a big cam. If your close to stock it's nearly useless. When your stopped and you stomp on it the converter allows the engine to rev higher before it catches making you launch harder esp if your big cam has no low end power and needs more rpm to make power

If your close to stock go with a 2000 stall

In the meantime the extra slip creates heat so make sure you have a trans cooler
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[KQQL IT]

Get the rebuilder to look at it get there opinion.

I had a 2500ish verter worked good. Went for more 3500 street fighter by TCI flashes almost 4k hate it for daily driving but 1.67 60' time makes up for it.

If you intend on drag racing. Get used to it. Or change it.
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[Desert1957]

I have a 3500 B&M converter with a 400 Turbo with 3:73 gears , 29.5 tall tire in my HotRod.

It works fine for a radical cam small block like mine, but IMO you need to go lower on your gears (4:10) or less stall speed on the converter.

Desert

[ulises milanez]

My rebuilder says it may be getting too much vacum or to little for the tranny regulator he say it should be at 15 can thatt be it ?
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