5 ms·A 600hp ls3by mgarfias 9y agoA 600hp ls3mlevental 9y agoshow memgarfias 9y ago$6200 for an LS3 on eBay. Pull the heads and send them to advanced induction for their porting services. $1100 for that, then a matching cam from them.mlevental 9y agooh i'm dumb just the block. for some reason i was imagining 10k for a car with an ls3.