Still have the PS Engine cover for sale?

I posted in the wrong forum. 3.55's are rarer in the 1999-2003 powerstrokes at least in F350's and E350's. The van was converted by Salem-Kroger out of Red Bluff, California. If anyone you know is thinking about it, PM me and I will share my experiences good and bad. If I had to do it over again, I would likely do it myself with a leafspring front axle kit from U-Joint Off Road or with a coil spring installation done by John at Quad Van in Portland, OR. Thank you again for your reply. I will look at your signature for info on the intake and the turbo exhaust outlet pipe.

Ken, thank you for your reply. I notice in your signature that you have 3.55 differentials. That ratio is rare. I ordered my van with a 3.55 rear end, but the converter put 3.73's in when they converted it to 4x4. Since the conversion, I have always thought that I effectively "lost my overdrive" after the conversion (i.e., on the flats it seems that my rpms are too high). And my fuel economy definitely dropped. If you don't mind, I would like to know what your fuel economy is with your 3.55's and any other thoughts you have on that differential ratio. I have my original ring and pinion parts for the rear differential and I am considering ordering parts for the front differential and having them both changed to 3.55.

Thanks for the reps but I cant take credit for it. It's in the mod/tech sticky

How's the 3.55s in your truck (i.e. fuel mileage vs power)? I have an identical truck (except 5sp manual). It originally had the 4.10s which were killing my mileage and engine. I was running about 2700 rpm at 70 mph; so I regeared to 3.73s which dropped my rpms to 2200 at 70 without much noticeable loss in torque. I was afraid to go down to 3.55s for fear of loosing too much torque. Not that I'm planning on regearing any time soon, I'm just curious how the 3.55s handle.