Attention: Auto's with aftermarket Torque Converters

02 blk GT

Founding Member
Oct 27, 2002
132
0
0
Houston TX
I just recently got a Art Carr lock-up Torque Converter installed in my 2002 GT and I decided to take it to the track and see how much it would help. My original best was 13.3@103mph and the times i got with my torque converter was 13.6-13.7@93-97mph. My car kinda acted weird at WOT in 2nd and 3rd gear. With the new converter it seemes to pull hard hesistate at around 4500 for a second and then continue to pull. It did this in 2nd and third gear and I think this is why my times were so bad, because It never did this when I had my stock converter. I think the computer's lock-up scheduling might me messed up. I am sure some of you guys with aftermarket torque converters have run into some kind of problems. How would I go about fixing this problem.

Brandon
 
I heard that the Art Carr shop in Texas puts together a crap product now, no offense. They own the name, but it no longer has anything to do with Art Carr from NHRA. He has a shop in Huntington Beach, CA now. He is still making torque converters and has some rather nice ones out.
 
You will probably need a custom chip to get the most out of your converter. I know after I put my 2800 stall in I couldn't chirp my 1-2, 2-3 shifts anymore, and the shifts felt a bit softer. So, today the car is going in for a dyno tune. I have high hopes for getting my neck snapping shifts back.
 
I agree with Gruntman. Your'e gonna need some pcm work to reconfigure the torque convertor strategy along with shift points and firmness. Level 10 did mine years ago when I had a 95 and it took them two tries (not uncommon) with a mail order chip but they nailed it on the second try.
 
The other alternative (more hardcore) is to get a manual valve body and do your own shifting. I have a PI 4200 stall converter and PA manual valve body. I also have a toggle switch for the converter lock-up function.