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Old 02-05-2012, 11:04 PM
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Torque converter Stall and ID questions

Hey guys I'm switching out my low stall stall converter in my th400, I have a th350 with what I believe is a higher stall although there's no markings, this converter is blue in colour and only number I see is 737. Now does diameter indicate stall speed?

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Old 02-06-2012, 05:43 AM
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Large 12" & 13" TCs/TorqueConverters are used for stock Low Stall ratings normally under 2200rpm. Smaller TCs, 10", 9" 8" are for Higher Stall ratings.
Basic Examples only:
12",13" = 1200-2200rpm.
10" = 2200-3500rpm.
9"-9.5" = 3500-5500rpm.
8" = 5500rpm & up.
A Large 12" can be made to stall 2500rpm or slightly more but, will be very inefficient & have a high Slip % up top.
Hope this helps.
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Old 02-06-2012, 09:00 AM
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that list only kinda works..
it's a good base line.. for off the shelf units..
all bets are off, otherwise..
my 10" is a 4800 stall..
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Old 02-06-2012, 01:06 PM
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thought this might help

http://www.hotrodders.com/forum/atta...id=62749&stc=1

I thought this might help.

Its the internal configuration not the case diameter that decides basic eng torque stall speed. As the attachment says you could buy an advertized stall of 2500 and it would have a stall of 2500 with a stock or mild engine build, but the same 2500 stall converter could have a stall of 4000 or higher with a really high torque engine. Most people buy the wrong converters because this is so misunderstood and kill the performance they could have had and never realize it. Call the company of the converter your thinking of running and they will tell you what characteristics it will have with your particular build!

Jester
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Old 02-07-2012, 05:46 AM
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Quote:
Originally Posted by stich626
that list only kinda works..
it's a good base line.. for off the shelf units..
all bets are off, otherwise..
my 10" is a 4800 stall..
Yeah 'stich', that's why I had 'Basic Ex. Only' above. Just giving the OP an idea of general sizes used.
It's always best to have a TC built for your combo but, most don't know or can't afford the extra $$.

What Slip % are you getting up top with the 10"?
At that stall level a 9.5" or 9" would be more efficient.

Todd
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Old 02-07-2012, 08:20 AM
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about 200rpm 300 on the button, but the 10" doesn't give away myset up.

guy looking over my rig before a "drive" basic 350q-jet and a 10" converter, nothing to see here, sleeper

grudge nights are great
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