Engine Swap
#11
09-27-2009, 03:45 PM
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Join Date: Mar 2008
Location: Killeen, TX & St. Paul, MN
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#12
09-27-2009, 04:52 PM
Hall Of Fame
3.9L to 5.2L swap!
well i just finished my engine swap from a 3.9 v6 to a 5.2 v8 let me tell you it was not that bad it runs good but i have a bigger problem if anyone can help me that will be great the truck runs fine but the cluster is not working @ all i used the v6 wiring harness just added two more injectors wires with the 5.2 pcm or computer
Sounds like you need to do a CTM flash.
#13
09-27-2009, 05:15 PM
Hall Of Fame
doesn't the 4.7 put out more then the 5.2?? almost hurts to think about but the 4.7 saw alot of upgrades when the swapped to that engine.. most notably the individual coil packs for each cylinder. my 5.2 runs off the good old distributor. can you put individual coil packs on the 5.2???
4.7L 235 = hp and 295 torque
5.2L 225 = hp and 295 lbs torque
5.9L 245 = hp and 335 lbs torque
5.9L R/T = 245 hp and 345 torque
3.9L was only available in late 1998 and full 1999 year and was discontinued there after in 2000 because of lack of demand. The 4.7L wasn't used tell 2000-2003. It would not have been the best choice. Not to mention he installed a bullet proof motor at that.
Last edited by hydrashocker; 09-27-2009 at 05:24 PM.
