torque converters truth or myth
#51
As a rule, the advertised "stall speed" is the flash stall rpm. This means in gear, at an idle, with your foot off of the brake and you floor it, it will flash up to the advertised RPM.
When brake torquing, the stall speed will be a bit lower lower.
A 3000rpm stall may flash up to 3000rpm, but may only brake torque @ 2500rpm.
Since the Hemi makes almost 90% of it's 375lb/ft of torque @1200rpm, a higher stall is not recommended for towing applications. It will just build more heat.
When brake torquing, the stall speed will be a bit lower lower.
A 3000rpm stall may flash up to 3000rpm, but may only brake torque @ 2500rpm.
Since the Hemi makes almost 90% of it's 375lb/ft of torque @1200rpm, a higher stall is not recommended for towing applications. It will just build more heat.
#52
As a rule, the advertised "stall speed" is the flash stall rpm. This means in gear, at an idle, with your foot off of the brake and you floor it, it will flash up to the advertised RPM.
When brake torquing, the stall speed will be a bit lower lower.
A 3000rpm stall may flash up to 3000rpm, but may only brake torque @ 2500rpm.
Since the Hemi makes almost 90% of it's 375lb/ft of torque @1200rpm, a higher stall is not recommended for towing applications. It will just build more heat.
When brake torquing, the stall speed will be a bit lower lower.
A 3000rpm stall may flash up to 3000rpm, but may only brake torque @ 2500rpm.
Since the Hemi makes almost 90% of it's 375lb/ft of torque @1200rpm, a higher stall is not recommended for towing applications. It will just build more heat.
http://www.dodge.com/en/2009/ram_150...ty/powertrain/
#53
I wanted to "revamp" this thread because its been three years and I was wondering if anyone had any good info on HP ratings after a new TC install? (aftermarket of course) Is it worth getting a different TC with say a 2500 stall and not doing any towing of any kind, except my gf's a$$? any dyno sheets?
#54
There was a noticeable increase in power after I got my 2800 stall installed. The stock converter is something like a 2300 stall but the converter itself is crap for performance and has a pretty bad parasitic loss to it. So even if you were to get a better converter with the same stall as stock you will still be taking advantage of the decrease in parasitic loss. With that said before you start thinking about the TC you need to really look into what mods you are wanting to do and what you use your truck for. If say you go for a bigger cam and heads that moves your peak tq/hp higher into the powerband you are going to want the stall of the converter to reflect that as well otherwise your truck is going to drive like crap dowwn low, but you also dont want to go to high or the TCM wont like it and the truck wont be very street friendly either. If you do tow then you need to find a converter specifically made for towing applications (I believe pro-torque makes a towing converter). Best thing you can do is call one of the converter companies, telll them what your plans are, what you have and are planning on doing to your truck, what you use your truck for and have them give you a reccomendation.
#55
#56
Awesome, great input. I do plan (later on down the road) getting into the 260 cam and p/p heads so i think that if I went with that Edge 2600, I would be sitting pretty good. I have a Short cab 2wd and just want to focus on more of a "race"(still keep the street driveability reasonable) application but dont wanna sacrifice torque at the same time.
#57
Awesome, great input. I do plan (later on down the road) getting into the 260 cam and p/p heads so i think that if I went with that Edge 2600, I would be sitting pretty good. I have a Short cab 2wd and just want to focus on more of a "race"(still keep the street driveability reasonable) application but dont wanna sacrifice torque at the same time.
#58
Awesome, great input. I do plan (later on down the road) getting into the 260 cam and p/p heads so i think that if I went with that Edge 2600, I would be sitting pretty good. I have a Short cab 2wd and just want to focus on more of a "race"(still keep the street driveability reasonable) application but dont wanna sacrifice torque at the same time.
#60