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I have a v6 and want to get a 4.7 Can I do it?
Welcome. Just about anything is possible, depending upon how involved you want to get. And of course, a big checkbook helps.

If your truck has a manual tranny then it should be pretty simple: engine, wire harness, PCM, mounts, water and A/C hoses, and other small stuff. The tranny is the same for the V6/V8 trucks; clutch and flywheel "might" be different.

If you have an auto, you'll need to rip out what's there and go with a 45RFE and the TCM, cooler, and other stuff. The driveshaft will need to be lengthened or shortened, a new yoke, mounts, etc.

It's very involved either way, but if you have a manual tranny it will be far simpler to pull off.
 
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