Originally Posted by
kea
As I tried to explain to SCCA before (Fit engine in F/Ford), the automotive manufactures basically plan on an engine (unchanged) for five years. After that, due to emissions, mileage, designs or materials, a change is expected. Sometimes not great, but some change. That is why none of the newer crop that have been available, were never designed to be rebuilt. At least not on the scale of the FF 1600, F2000 (Pinto), small block Chevy, F/fst 1600, etc. So, expecting to find a new engine that won't be timed out for more then a short number of years, is not going to happen.