Tune and Test Pontiac Firebird LS1 Build - LS1 Power Plan - Pontiac Tech
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To maximize the potential of the increased intake and exhaust modifications, we turned to Comp Cams to replace the mild stock GM '98-'00 LS1 cam (202/210-degrees intake/exhaust at 0.050-inch duration and 0.496/0.496-inch int/exh lift on a 116 LSA) with a Comp Cams high-rpm street-strip XER273HR grind (PN 54-444-11, retail $402.42) that specs in at 0.224/0.230-degrees duration at 0.050 and 0.581/0.588-inch lift on a 114 LSA. The cam features Comp's most aggressive LS1-based lobe profiles and carries an advertised power-band of 2,000 to 7,000 rpm. View Related Article
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