Let's say for example a car makes peak torque at 4000rpm.. What would be the ideal converter? A 3600?, a 4000?, or a 4400? Basicly should you get a converter that flash lil before, at, or a lil past peak torque???

 

I have heard that you want the converter to stall about 1500 from your shift point and drop 800-1000 rpms between the shifts. I am guessing that the converter manufacturers are trying to get the most avg horsepower in the range the converter is working through. I would love to know the science on how the converter manufacturers can get a car to stall 1500 from your shift point and keep the rpms from dropping too much or not enough.

 

If that's the case then I would need about a 5000

 

I run a 5000 PTC 8" converter,shift at 6200. Car has been 1.399 60' making 398 rwhp. Make sure you get the "right" converter. Call a good converter company and take there advice.

 

Agree, get a custom built converter, not one of those off the shelf parts.

 

Wow we are very close power wise.. What do you car run in the 1/4? What rear gear? I 60ft a best of 1.50 with 3.73 and 4000 stall.. I know it can do better..

 

10.72@ 127.99
3.89 rear 27x 11.5 QTP tire. The converter flashes 5020.

 

With 398rwhp?? Wow, that's moving out..

 

Stock bottom end LS1 with TSP 233/239 cam and PRC stage 1 799 heads and TH350 with PTC 8" converter.

 

That's Awesome! Whats your race weight?

 

3220 with me.
ME 175.