Torque Converter

[Merc390]

So in the next month or so I am throwing together a high compression N/A Coyote to be transplanted in the Merc. But Im still questioning what kind of torque converter I should use.I was thinking of going with either a 4000 or a 5000 stall. Just trying to get more opinions before I pull the trigger.

-Kyle

[Turbov6Bryan]

I would call circle D converters and find out what everyone else with your goals is running.

I assume 4r75 trans too?

[Merc390]

I would call circle D converters and find out what everyone else with your goals is running.

I assume 4r75 trans too?

Correct Im personally doing the install and Im trying to keep everything as simple as possible.

Only Item as of now that was farmed out was the stage 3 comp cams install

-Kyle

[Turbov6Bryan]

I still have a 2011 mustang 5.0 auto i bought new in 10, they run damn good!

[Invective]

Oh heck, consult with MartyO. Thinking I would be leaning towards a 6r80 with the coyote motor. Love my Circle D 3k stall with my mildly modded stock motor and transmission - your results may vary! Marty-Jeff-Eric nailed it down perfectly. Great fuel mileage at the moment while being used as a daily driver - about to park Marauder as Mustang is coming up for daily driver rotation.

[Merc390]

What stall does most of you use for your mid to higher HP/TQ cars?

-Kyle

[musclemerc]

Been happy with my PI3000 single disc
CircleD has since been the best convertor on the market.

[blazen71]

I had a PI2800 triple that was really nice. Next one I get will be 3000.

[crownvic97]

I have a super cheap Road Runner 3600 converter. I’ve only put a few thousand miles in it but it hasn’t broke yet and it’s a blast.

With the coming addition of a third pedal in my car I won’t be using it anymore however :banana2:

[Turbov6Bryan]

Precision industries makes a great converter, I have a few of them in my buicks..
I have also ran JW makers of the wheel down in Florida and it's a great running efficient non lock up
I would contact Dusty Bradford for a high stall non locking converter as it is just as efficient as a lock up vert being locked. I believe he sells PTC and he is a truely great person to deal with

[Marauderjack]

If you keep the VCT active there should be no need for an ultra high RPM stall converter since low end torque is controlled by cam timing....just saying!!:cool::burnout:

Good Luck...sounds like a FUN project!!:beer:

[Merc390]

If you keep the VCT active there should be no need for an ultra high RPM stall converter since low end torque is controlled by cam timing....just saying!!:cool::burnout:

Good Luck...sounds like a FUN project!!:beer:

I was talking with Circle D and he said that hed put in a 3800 4000 stall because that is what most of the 6R80 guys do. But that seems a little high to me , because if I'm not mistaken the FRPP control pak should still control the VCT.
I guess I will find out.

Dumb question, what happens if I install/have installed a higher than needed stall in the trans?

-Kyle

[Merc390]

I have a super cheap Road Runner 3600 converter. I’ve only put a few thousand miles in it but it hasn’t broke yet and it’s a blast.

With the coming addition of a third pedal in my car I won’t be using it anymore however :banana2:

I saw those and the price and the 50/50 reviews scared me hahaha

-Kyle

[RubberCtyRauder]

Some places allow for one stall change for either no or minimal cost. PI did or still does

[musclemerc]

CircleD too

[blazen71]

Just saw the pic in your original post. Looks like you've made progress since I saw it last.

[Turbov6Bryan]

If you keep the VCT active there should be no need for an ultra high RPM stall converter since low end torque is controlled by cam timing....just saying!!:cool::burnout:

Good Luck...sounds like a FUN project!!:beer:

With that intake manifold he has, it wont make crap for power under 4000 rpm, it will need a 4-5000 stall.
Most fast guys just lock the cams and do not use VCT because the engine is past the rpm need for torque.

Plus he has aftermarket cams, i would seriously think about a very high stall.

Most likely the power band is now 4800-7500....
If you install a higher stall than needed, then the performance will suffer because the stall speed is higher than the power band. I would do some research.
I would think the sweet spot on the motor is 6500-7500.. maybe higher. This video, the car drops down 2000 rpm with each shift, if he had a higher stall it would only drop down 1000 rpm and the car would probably be a full second faster. Probably 100 horse difference between 5500 and 7500. If kept in the sweet spot, you go faster. https://youtu.be/UcOz4KBof0M

[Merc390]

Just saw the pic in your original post. Looks like you've made progress since I saw it last.

Slow and steady but she is coming along.

-Kyle

[Merc390]

With that intake manifold he has, it wont make crap for power under 4000 rpm, it will need a 4-5000 stall.
Most fast guys just lock the cams and do not use VCT because the engine is past the rpm need for torque.

Plus he has aftermarket cams, i would seriously think about a very high stall.

Most likely the power band is now 4800-7500....
If you install a higher stall than needed, then the performance will suffer because the stall speed is higher than the power band. I would do some research.
I would think the sweet spot on the motor is 6500-7500.. maybe higher. This video, the car drops down 2000 rpm with each shift, if he had a higher stall it would only drop down 1000 rpm and the car would probably be a full second faster. Probably 100 horse difference between 5500 and 7500. If kept in the sweet spot, you go faster. https://youtu.be/UcOz4KBof0M

I have the MMR VCT Lock out kit just in case. But I have been in contact with circle d and he was saying guys running a set up like mine, but in a mustang, like a 4000 stall so I think I will try that out and go from there.

-Kyle