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mild convertor question

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Old Jan 26, 2020 | 10:39 AM
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mild convertor question

My new cam set up calls for a mild stall. I am running a stock one currently. What will a mild stall do for me? Never had a performance stall before.

thanks
 
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Old Jan 26, 2020 | 11:47 AM
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Mild stall

What RPM stall are you thinking about? How much vacuum is the present at idle in gear? Which rear axle ratio do you have? I had a 2k stall with a 460 once and it was just slightly too much for the street. What would be a better combination would be a C6 with the wide ratio planetary gear set and a stock converter or one just slightly higher than stock.
 
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Old Jan 26, 2020 | 05:33 PM
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Originally Posted by kenny nunez
What RPM stall are you thinking about? How much vacuum is the present at idle in gear? Which rear axle ratio do you have? I had a 2k stall with a 460 once and it was just slightly too much for the street. What would be a better combination would be a C6 with the wide ratio planetary gear set and a stock converter or one just slightly higher than stock.
Thanks Kenny,

I am still trying to learn how the truck will act with a mild stall vs a stock one. what will i expect to see/feel with a stall
 
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Old Jan 26, 2020 | 07:53 PM
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Stall

Why not check with the guy that helped you and got it running, I think he would be the one to ask. He could give you the right advice since he has seen what you have. What did the cam manufacturer say about the best stall for your combination?
Too much overlap with a stock converter is a bad set up .
 
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Old Jan 26, 2020 | 09:49 PM
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That's why some of us won't even consider an auto. Just to much to try to sync together for a little convenience.
 
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Old Jan 29, 2020 | 10:23 AM
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A torque converter is a fluid coupler, very simple. The input/output lock together (for the most part) at the stall speed. A 'mild' converter will raise stall speed a few hundred rpm, allowing engine to get further into power band (more torque) before vehicle moves. Same principal as reving engine higher at take off with a manual.
 
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Old Feb 1, 2020 | 11:05 AM
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Originally Posted by smoky_diesel
A torque converter is a fluid coupler, very simple. The input/output lock together (for the most part) at the stall speed. A 'mild' converter will raise stall speed a few hundred rpm, allowing engine to get further into power band (more torque) before vehicle moves. Same principal as reving engine higher at take off with a manual.
And it does this by "slipping" between the fluid coupler and this adds heat to the ATF.
Heat in an auto trans = BAD!
That is why you don't see a lot of higher stall converters used on the street.

Also to pick one right you need to know the HP/TQ @ RPM's of the motor, weight of car / truck, gear ratios of the transmission and the rear gear and tire size.
They may also want the cam spec but been 30 years since I had one built for my drag car but the same goes for any car or truck to get it right.
Dave ----
 
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