hey everyone. just wondering if anyone knows of an aftermarket converter for the hemis. i have a feeling the stock one isnt as efficient as an aftermarket would be in gettin power to the ground.

 

APS Precicsion or Edge. I am installing a 2700 stall APS in mine this weekend.

 

Helopilot, let us know how it turns out . Deffinitly a mod to consider if it improves the trannies lame shifts. What results are you looking to obtain with this mod , and do you have to change anything in the powertrain , or does it slap right in ?

 

It's not going to help with the shifts at all. If you need to improve shifting then go with the Superchips programmer and a Trans-Go performance shift kit. As far as the TC, it just slaps right in. You can also swap over to 4.56 gears as that will improve shifting. I am putting in the TC so I can get some 1.8 60' times as opposed to the 2.0 60's I am getting right now.

 

a torque converter's main job is to keep the engine in a specific powerband for optimum use of your engine's torque throughout a given range. For example, a 2800 stall converter does NOT need to go to 2800 for the vehicle to move, but it WILL go to 5000 once you stab it from a dead stop. There is much to learn about a converter, how it works, and if it is right for you. I am a big fan of a low stall (2600-3200) for a street vehicle and a high stall (3600-5000) for a track only vehicle. If you are a 4x4, there are other factors to consider in choosing a converter. Mostly because, whats right for the track, may kill you when off roading or hauling heavy loads. Another thing to consider is STR (stall torque ratio). You can have a pair of converters, both 2800 stall, but one will have a STR of 1.6 and the other will have a 3.0. Put them both in the same truck, the 1.6 will leave gently but give a higher MPH whereas the 3.0 will feel like you just got rear ended at 100mph! Whereas the 1.6 is better for towing, the 3.0 is better for a good launch.

A plethora of information can be found on Yank's site: http://www.converter.cc/faq/faq_main.htm

 

APS has a 2.5 stator ratio I believe and the Edge has a 1.8 if my memory serves me correctly.

 

if your going for a track only converter (based on your mods) I would recommend a 3200 stall with the highest STR ratio you can find. And definitely run some ET Streets as you are gonna need them. Take my advice and you should be in the 1.6 range.

 

I was aware of how the law stall and high stall work when it came to converters but wasn't awear of the "STR" . So you guys are telling me that I can keep the law stall and have a good launch as long as the converter has a high STR and a law stall #. What is the 5-45r's automatics STR?

 

eds2003, yes, you can have a great launch, a low stall speed, and still have all the same benefits of the stock converter. It is VERY possible. A converter can be built to do whatever you want it to do, but you MUST call and talk to a tech, do not buy any off the shelf converter as you wont be happy.

Most stock converters have anywhere from a 1.2 to 1.5 STR ratio and @ 1500-1800 stall speed. Very tight converter.

 

My drag radials should be here tomorrow as a matter of fact. Since I do tow occasionally I decided on the 2700 stall as I can get the best of both worlds. The highest stator that can be put in these trucks is about a 2.5, after that the TCM senses the slipping and will give you a CEL.