th400 3.42s... what stall
Thread Starter
TECH Regular
Joined: Mar 2005
Posts: 457
Likes: 0
th400 3.42s... what stall Hey guys, sick and tired of this M6! I do to much racing to deal with it, I have a built th400 from my old car I want to swap into my 10ss! I have stock 3.42s that I plan on keeping as this is my daily.
My question, this is a pretty heavy car and my motor is making around 450 at the wheels right now. Looking for a stall that will run decent on the street but get me some solid 60s too! I have a hard time getting 1.8s on drs right now, hoping this swap will get me 1.70s and get my car in solid 11s. Was thinking of a 3500-3600 would be nice... what do you guys recomend, I am running the stock hight tire 28.7"
No more axle worries and smoked clutches will be nice too!
My question, this is a pretty heavy car and my motor is making around 450 at the wheels right now. Looking for a stall that will run decent on the street but get me some solid 60s too! I have a hard time getting 1.8s on drs right now, hoping this swap will get me 1.70s and get my car in solid 11s. Was thinking of a 3500-3600 would be nice... what do you guys recomend, I am running the stock hight tire 28.7"
No more axle worries and smoked clutches will be nice too!
Ehhh, you are pretty much in the EXACT same boat as me right now. I swapped my car to a TH400, and I went out to the track expecting, almost down right demanding, some awesome sixty foots, and I was left short handed. My car made 380whp through the TH400 and a 9 inch, so that is not much less that yours if any at all (Cause trust me your dyno numbers are going to go WAY down), and my car has a 3.50 gear and a 3600 rpm stall.
What would happen with mine, is that I would stage up, actvate the transbrake, floor it, and then let it rip. The car would FULL hook, and then try to climb out of the hole. The best sixty foot it got was a 1.80 exactly.
What the problem is, is either a 3.42-3.50 gear is way to high, or your stall is way too low. Even if you put a crazy 5000 stall in the car, that would still not be the perfect combination as that would produce a LOT of tranny heat.
I am currently swapping my rear to 4.56's, and then I will go back out and see how she does. I am expecting that it will perform alot better.
Long story short: If you are swapping your car to a TH400 and want to have great sixty foots, you need to be prepared to sacrifice some on the street. I would have at LEAST a 3.90 gear in the car, and at LEAST a 3600rpm stall. Keep in mind my car is easily a good 800 pounds lighter than your car and I have a transbrake in my tranny.
Hope this helped you some, good luck!
What would happen with mine, is that I would stage up, actvate the transbrake, floor it, and then let it rip. The car would FULL hook, and then try to climb out of the hole. The best sixty foot it got was a 1.80 exactly.
What the problem is, is either a 3.42-3.50 gear is way to high, or your stall is way too low. Even if you put a crazy 5000 stall in the car, that would still not be the perfect combination as that would produce a LOT of tranny heat.
I am currently swapping my rear to 4.56's, and then I will go back out and see how she does. I am expecting that it will perform alot better.
Long story short: If you are swapping your car to a TH400 and want to have great sixty foots, you need to be prepared to sacrifice some on the street. I would have at LEAST a 3.90 gear in the car, and at LEAST a 3600rpm stall. Keep in mind my car is easily a good 800 pounds lighter than your car and I have a transbrake in my tranny.
Hope this helped you some, good luck!
