My 98 k1500 350 vortec 4l60 suburban just spun a main bearing. I've seen this topic before on many sites but it always goes cold with people arguing about its a bad swap or do a LS swap instead and never answer the guys questions. I have a 454 vortec with 18k miles on it with 4l80 and its free. I know the mechanical end is plug and play for the most part aside from maybe the trans cross member and having to buy a conversion output shaft to fit my t-case. I know the computers are the same with different cals. I have the 454 complete with harness and computer so a full swap is fine if i need to. Both engines are MPFI my only question is how easy is the electrical swap. I have heard that the routing of the wires is different in the BB then the SB. with the BB there's more wires that come through the passenger side fires wall as appose to the drivers side. Is this true? and witch ones. also will I have to change the dash harnness to make my gauges work. should I grab the newer cluster too from the BB. I'm Good with electrical just don't know exactly what to change. I've even pulled up schematics and the wiring looks the same. I just keep hearing the routing is different. Can some one who has done this swap please help me out. :smash:
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