Posted 16 November 2009 - 06:21 PM
Well, the XLT's are kind of a special one, seemed like if you got a good one it was good for 7-8K miles, if you got a bad one you normally were around 7-800 miles. Biggest concern is the crank and crank seals. But normally I would expect somewhere in the 5-6K range between top ends. for a top end you're looking at about $5-600 depending on whose pistons you use and how much the machine shop charges for boring. If the crank goes your looking at about $1300 at least. But they are so common that you can find complete motors on ebay for the price of a top end rebuild.
1 the cranks had a nasty habit of snapping off the PTO end and the clutch flying around in the belly pan and
2. the crank seals tend to leak from time to time and cause lean burn downs.