Some rebuilders have commented that making the 2.6L into a 4.0L was a lot like making the 265 Chevy into a 400 it’s a good analogy on a slightly different scale.įord has made a number of changes and improvements to the 4.0L since it was introduced. The block was just about maxed out at this point, so the cylinders ended up pretty close together, and the rods were crowding the pan rail, especially on the 97TM blocks. The 2.6L block that began with a 3.54˝ bore and a 2.63˝ stroke ended up with a 3.952˝ bore and a 3.307˝ stroke by the time it grew into the 4.0L. These pushrod engines are all conventional 60° Vs with cast iron blocks and heads. It was replaced by a SOHC engine from this same family at the end of model year 2000. The original 2.6L engine was replaced by the 2.8L, which was upgraded to the 2.9L and then finally bored and stroked to make it into the 4.0L that was used in the Rangers, Aerostars and Explorers starting in 1990. The Ford 4.0L/244 cid is the big brother in a family of Ford V6 engines that were built in Cologne, Germany, and have been used in domestic Fords since the early ’70s.
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