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Re: 5.3 vs LS1?
Since its a straight up trade for crap you may have wanted to get rid of anyway, I say go for it. As far as the comment about 5.3 heads being inferior, you have it backwards. Unless you have the LS6 version (not likely) then you don't have the favored 243 heads. However late model 5.3's came with 799's which are the equivalent to the 243's minus sodium filled valves which Chevy sells for $50 a piece. Go with the LS1, long tube headers, decent cam and stall and you will have an easy 400+ fly wheel hp.
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