Torque converter

[davidmcdavid83]

I have A4LD transmission, and 3.0 engine. Does torque converter make a difference if it's fir 3.0 or 4.0 engine.

 

[lil_Blue_Ford]

That’s a good question. I know the bellhousing is different but I’m not sure about the torque converter. Did you try looking up part numbers for the same year and see?

 

[SenorNoob]

RockAuto has different part number from the same remanufacturer for a 94 with 4.0 (F577L2AA) vs 3.0 (F57FA or F57AA). I have no idea about physical mounting, but would guess the 4.0 that year has a lower stall speed. (I think that's right.) That would allow it to take advantage of the stupid low torque of the OHV.

If I had both in one place (say a junkyard) and wanted to experiment, a 3.0 torque converter with the 4.0 might be fun at stop signs.

 

[davidmcdavid83]

Yeah I figured it out at 3.0 and the 4.0 don't really swap out. I mean you could but you would have to make the input shaft a couple of inches shorter or after everything is tightened down the torque converter and no longer spin inside the transmission. True story about 5 or 10 hours of Labor just figuring that out. Back and forth, transmission up, transmision on ground. Stop sign say, no pay long time.

 

[lil_Blue_Ford]

Interesting. I’m not sure I really see any reason for the difference unless they are different stall speeds. Or some engineer trying to justify his/her existence…

 

[SenorNoob]

...some engineer trying to justify his/her existence…

I hate that. But I still don't like that every vehicle isn't a double din radio from the factory.