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Old 02-20-2017, 06:03 AM   #1
mongocanfly
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Join Date: May 2015
Location: Alabama
Posts: 14,671
4.8 to 5.3 swap ?

I work with a guy that has a 4.8 auto truck and he's wanting to swap out to a 5.3...the question is he's thinking he can just swap the engine and ecm and be good to go..is this a doable swap or is there more to it..I've only done smallblock for ls swaps in older trucks..never a ls for ls swap in a newer truck..I'm not sure of the exact year models of his truck or his donor engine. I'm thinking mid 2000s on both
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