Ive spotted a deal on a 99 f-250, superduty with the 5.4l and automatic.

how do these things pull. I haul trailers, occasionally up to 8-9,000 but the boat is 7,000.

would it work, or is it crap?

also, is 145,000 a ton on these engines, or do they last?

It will work fine. The 5.4 is a good motor.
There are many out there with 200+ on them no problems.

I had an F-150 with a 5.4 3.73 rear end and pulled my 25 Outlaw just fine hell if you're not pulling real big stuff that thing will do alright.

My 5.4 super-screw with 3.73 is only marginal pulling my 288, weighing in at around 7,000. Great truck but I would have gone with 4.10 gears, probably make all the difference..

My Expedition with 5.4 & 3.73 gears tows my 8,020 pound boat & trailer just fine !

I have a F150 Supercrew FX4 w/ the 5.4 , does great. Of course I'm not pulling anything but my little Baja Hammer, but it tows it just fine. Great engine, I'm very happy.

2000 250 SD 4x4, 5.4L w 3.73 axles. 32' boat, peice of cake. You just won't leave no rubber on take off.