3.23, 3.55, or 3.73

[BAFRAID]

Any good converter shop will ask you a ton of questions (fill out a questionair or answer in person) about your combination, the way you drive ,where you drive most, and what you expect to change, or what you want out of your car. I would call several different shops to see what kind of answers you get. Converter choice can be just as critical as cam choice! ATI , PTC, Dynamic, Hughes, Dice, FTI, several other good ones. Local to you is helpful. I would not consider TCI. Its not for nothing that people say that their initials stand for "total crap inside".

Thank you for your reply. I will start local. Possibly at the same shops that rebuilt my tranny, then maybe the engine shop that rebuild my engine.

 

[33 IMP]

Thank you for your reply. I will start local. Possibly at the same shops that rebuilt my tranny, then maybe the engine shop that rebuild my engine.

Hughes performance has a series of excellent torque converter videos on you tube. #5 explaining stall speed and how it is adjusted, is particularly good.

 

[Curiousyellow71]

For street driving it is important to get a "tight" converter. If all your doing is drag racing then it can be "loose". I would not be surprised if the lupo's at Dynamic would set you with a stall in the 4000 rpm range. Many would say "you can't run a 4k stall on the street"....and they would be right for a "loose" convertor. A race type or loose convertor the car struggles to move till it hits the stalls rated rpms. The tight converter only hits that stallspeeds under full power. Getting it designed for your specific application is important because they can tweek the stall for your combo. We run hughes converters when the budget does not allow for $$$. We like Ptc for performance on a budget. But, the last converter we bought was from dynamic. They were more confident of what they could do then Ptc and for $200 more then Ptc I have no regrets... The Lupos at dynamics are mopar guys and most would recommend them highly, I have yet to see someone complain about them.
As for other companies, I am sure they are out there. But Do not let someone talk you into a loose convertor past 2500 on the street.IMHO

 

[BAFRAID]

For street driving it is important to get a "tight" converter. If all your doing is drag racing then it can be "loose". I would not be surprised if the lupo's at Dynamic would set you with a stall in the 4000 rpm range. Many would say "you can't run a 4k stall on the street"....and they would be right for a "loose" convertor. A race type or loose convertor the car struggles to move till it hits the stalls rated rpms. The tight converter only hits that stallspeeds under full power. Getting it designed for your specific application is important because they can tweek the stall for your combo. We run hughes converters when the budget does not allow for $$$. We like Ptc for performance on a budget. But, the last converter we bought was from dynamic. They were more confident of what they could do then Ptc and for $200 more then Ptc I have no regrets... The Lupos at dynamics are mopar guys and most would recommend them highly, I have yet to see someone complain about them.
As for other companies, I am sure they are out there. But Do not let someone talk you into a loose convertor past 2500 on the street.IMHO

Thank you very much. That was a lot of great and very specific information. Exactly what I needed.

 

[joemish]

Building the third member for my 69 Super Bee, 727, 383 with mild build and wondering which gear ratio to go with? Original was a 3.23 sure grip. I’m wondering if a 3.55 or 3.73 would be more fun on the street and still allow me to hit the highway comfortably as well. Any input would be appreciated.

if you want (decent but not great) fuel mileage stay with the 3.23 the others give you more torque but eat more gas.

 

[mike isabella]

3:23 is the gear, good road gear plus a little push off the line...

 

[Larrry B.]

3:23 is the gear, good road gear plus a little push off the line...

That's what I have, hot(er) 383 with a robust 727 and I'm off the line pretty fast without having to floor it and can still fly down the road.
Once I can change over to a Tremec Manual the RPMs should drop further...