97 "ISH" could be either the LT1 OR the LS1 now if it is DEFINITELY a 97 then it is an LT1. Startin in 98 they put in the LS1. Now that said, even though the LT1 makes less power than the LS1 if this guy has intake and a header back exhaust along WITH a cam: he should EASILY be runnin 13's. They ran low to mid 14's stock... where as the LS1 ran low to mid 13's stock (with a few freaks breakin 12's)
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