Raising converter stall

Motor is out for a rebuild and getting a stg 2 colt cam, ceramic coated delipped pistons and head porting.
Running 350/200s, fully built BTS with PI converter and a precision 76mm.
While the motor is out I’m sending the converter back to PI to raise the stall.
Running 4.10s now but switching to 3.73s when new ‘05+ axels get here.
I have 1800 rpm stall now and I’m thinking 2100 should help with the large charger.
What do you guys think on stall speed?




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The more HP the motor, the converter is going to stall higher. . Also, with the taller gears, the converter is going to stall higher. I would leave the converter alone until you run it.

Billy T.
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Depends on what you are doing with the truck. Drag racing, sled pulling???

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gnxtc2 said:

The more HP the motor, the converter is going to stall higher. . Also, with the taller gears, the converter is going to stall higher. I would leave the converter alone until you run it.

Billy T.
[email protected]

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I have run it for a while the way it is and it does good once you’re in it but a few hundred rpm down low would help a lot.
The only changes are the cam and rebuild.


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hucorey said:

Depends on what you are doing with the truck. Drag racing, sled pulling???

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Mainly a fun truck/drag


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You'll want a higher stall then so it'll be easier to light the charger off the line.

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hucorey said:

You'll want a higher stall then so it'll be easier to light the charger off the line.

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That’s what I was thinking!
I just want one that has the “right” stall.
Curious what others have run for stall with similar setups.
I think 2100 ish would be good without being too much.


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Apples to oranges here, but im running a kc stage 3, which is 68mm in my 6.0, and ive got a 2k stall dpc quad disk, stalls closer to 2100, and is about perfect launching. Stock, which is around 1800, was a little too low to light the turbo enough and cut good 60fts. I tried a 2400, and it wasnt right either. Felt funny shifting down the track, almost seemed to lose power due to the extra slippage it seemed.

Completely different, i know, but hope it helps some :shrug:

6.0 Tech said:

Apples to oranges here, but im running a kc stage 3, which is 68mm in my 6.0, and ive got a 2k stall dpc quad disk, stalls closer to 2100, and is about perfect launching. Stock, which is around 1800, was a little too low to light the turbo enough and cut good 60fts. I tried a 2400, and it wasnt right either. Felt funny shifting down the track, almost seemed to lose power due to the extra slippage it seemed.

Completely different, i know, but hope it helps some :shrug:

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I appreciate the feedback!
Exactly the information I need.
Thank you!
For a BB 76 with a .98 turbine housing it spools decent for the size, however I’m just hoping a slightly looser converter will help a little!
Also I like apples and oranges... lol


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im the same setup but with 37s and .373 gears, havent regeard yet to 4.30s

i ran the stock stall on my PI for a few years and now at 22 or 2400 stall and definitely enjoy it better on just a 467, going to a 472 now after once motors fixed (threw some rods)