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SportTrac Discussion
Engine & Drivetrain
Replace the engine?
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<blockquote data-quote="MVanover" data-source="post: 1054621" data-attributes="member: 75690"><p>I often wondered about replacing a run-out V-6 with one of the later pushrod 4.0L V-6s. I know there are sensors that would not be there, so a new/used wiring harness and ECM would probably be necessary. My son replaced the 2.9L V-6 in his Bronco II with the 4.0L from a 90s Aerostar along with the ECM and engine harness. Way beyond my capability, but he was a USCG Avionics Tech. He rebuilt the engine with a Comp Cam, World Products heads and some JB headers. He reworked the rocker arms with stainless steel cups and plugged the ends so the pushrods would actually get oil. That is a strong engine! It has also proven to be quite reliable over the last 20 years.</p></blockquote><p></p>
[QUOTE="MVanover, post: 1054621, member: 75690"] I often wondered about replacing a run-out V-6 with one of the later pushrod 4.0L V-6s. I know there are sensors that would not be there, so a new/used wiring harness and ECM would probably be necessary. My son replaced the 2.9L V-6 in his Bronco II with the 4.0L from a 90s Aerostar along with the ECM and engine harness. Way beyond my capability, but he was a USCG Avionics Tech. He rebuilt the engine with a Comp Cam, World Products heads and some JB headers. He reworked the rocker arms with stainless steel cups and plugged the ends so the pushrods would actually get oil. That is a strong engine! It has also proven to be quite reliable over the last 20 years. [/QUOTE]
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SportTrac Discussion
Engine & Drivetrain
Replace the engine?
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