Originally Posted by Carcrazygts2
[MENTION=99584]ibd2328[/MENTION] I have found the 4r100 is typically only in 7700 the have spring code 73. I dont know why Ford did that. But for all of the ones I have worked on and looked at purchasing myself. Those seem to be the only ones..
[MENTION=76842]Carcrazygts2[/MENTION] from my understanding the LEV (Low Emissions Vehicle) 7700's were the only ones outfitted with the 4R100's. I think a large/huge porotion of those were California compliant. I know VA had a few, but I think they are a bit more rare than people think.
I initially thought all 7700's had the heavy duty tranny, but apparently not. Best way to check is the pan. 14 vs 20 bolt I guess.