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Old 08-31-2003, 07:28 PM
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Harness and ECM ?

ok here is my problem I am wanting to upgrade my 350 vortec to a 454. My questions are do I need a new wiring harness for the 454 or will the 350's work? I need a ECM for the 454 but do I need any other electrical parts ? (I.E. more sensors) I have a 98 3/4 4X4.
Thank you for reading this. and any info you can provide
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