[wafrederick]

The book says 13 hours to change it.A general rule with an used engine is to hear it run first before it gets pulled,most yards do not do this and assume it runs good.If you don't,you will get "burned" and I have seen it a few times.Make sure there are no holes in the block,Jasper makes you pay the core charge if there is a hole in the block.Any 4.6 out of a car will fit,you have to change the timing cover,oil pan and oil pump tube also the exhuast manifolds.Also inspect the exhaust manifolds off the truck,known for breaking in pieces causing an exhaust leak.Replace the exhaust manifolds if needed.