What effects does the size of the torque converter have say for example 245 vs258 if it has the same stall speed

 

In general, the smaller the torque converter, the more rpm it needs to be efficient. For example, a 11" is good for around a 6000rpm max shift, a 10" 6500rpm, 9" 7000rpm, 8" 7500rpm, etc. The numbers I used arent set it stone, but its true in general.

 

i went from a 11in 3200 single disk down to a 10 1/4 multi disk 3000 stall. i havent hooked up the new one yet but hope its a good difference

 

So how would that apply in real world driving

 

It's my understanding that the bigger the converter, the tighter it's gonna drive, meaning it's gonna feel closer to stock under normal driving conditions and the smaller the converter, the looser it's gonna feel under normal driving conditions. I could be off on this aswell.

 

So how will a 245mm 3000 stall compare to 265mm 3000 stall compare. Vs stock

 

The 245mm should have a looser feel to it meaning that driving around town and accelerating from a stop, your rpm's will flash up higher to get moving. A 265mm would feel a little tighter meaning less flash up to get moving. I don't think your actual stall speed affects driveability.

 

idk much about it eather, i know the 3200 was BA to drive around could pass with like 1/4 throttle on the highway

 

In theory a 245mm and 265mm converter both with 3000 rpm stall will flash to the same rpm.. The main difference is street driveability. A 245mm converter will require more throttle to get the truck moving, but will flash to the desired rpm faster.. In a car platform this doesn't matter as much because of the weight of the car. In a truck I'm sure it could get annoying.

Get it?

 

im with this guy, but I run a 9.5 " stall in my Tahoe... thats like the smallest you can get. Yes its looser, and likes to unlock alot to flash. but IMO it will flash real quick and get going. its a 4000 rpm, and it was built extra tight being the weight of a suv. So take it as it is. If I was do get another stall, prob go up on diameter just a lil bit.