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This depends on year and what 305 and even in some cases what trans you have. 150 HP LG4 Carb 305. 190 HP L69 Carb 305. 215 HP LB9 TPI 305(1985) 190 HP LB9 TPI 305(1986-1987) 215-220 HP LB9 305(1988-1989) 215-230 HP LB9 305(1990-1992)-(91-92 were Z-28's not IROC's since GM Lost there contract with the Internation Race Of Campions which used the camaro's body design for their series from 84-89)

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17y ago

What else can I help you with?