727 convertor???

Since that the Matador has quite a bit more weight to it (probably 800# more), the 2400 will stall higher. That said, IMO your cam needs at LEAST 3000 stall on the street and closer to 4000 for a strip car. I ran a 3800+ on the street with a solid cam that was 258@50 and 3.73 gears. It was explosive when it hit the power band, but in most street driving, I rarely hit the power band. It was pretty obnoxious to drive. It was like a slipping clutch in traffic. I now have a hydraulic cam at 239/249@.050 with 3.31 gears and a 3000ish stall converter and its SOOOOO much better. I miss my 3.73 gears a little bit, but not on the highway.

Avoid the $189 eBay convertors. They may work for awhile, but when they let loose, they could send crap all through your trans. I've seen one cut open, they bend the fins in place rather than braze or weld. You are looking for a 10" convertor made on the loose end. There are many brands at all prices. IMO a decent 10" convertor should cost at least $350 and even at that price I would want specific questions answered.
I get mine from PATC in Bossier City, LA. But they're local and I've seen the way they build their units. The mass produced units like B&M and TCI have some horror stories, but some people swear by them.

I would use the one you have because you have it and it is essentially free to use. It is not a big deal to change it, especially in a big car with room to work. If you want to cruise at 2000 rpm, a high stall converter will be slipping quite a bit at cruise and will be creating massive amounts of heat. It seems to me that a mild 401 should idle down further than 1000 to 1100 rpm.
I have a moderately built 360 in my 68 Rogue with a 727 and 3:15 gears. It has a nice consistent somewhat lopey idle at about 700 rpm and drops a little with the car in gear and the AC running. It uses a 2800 converter and it works great. In a heavier car with a little more engine, the 2400 you have should be similar.
Although the Rogue is small and space is tight around the transmission, I can change the converter in less than a day. It would be more like an afternoon if not for the dang headers being in the way. I will never use headers again, but that is another story...


Edited by 6768rogues - Jul/01/2016 at 11:54am

I have a similar 252@0.050" cam in a Javelin so lighter than your Matador.   With 3.15 gears, it will want > 3000 stall.   I tried it with 3.15s and a 2400 stall, 'cause I had one, and it was a horrible combo. Was going to get a 3500 stall, but fit a stick instead.

I'll look for a 10in one , thanks