My 9.4 compression 461 came in at 429.2hp and 531.4 trq with Butler kit and 16 heads with mild port.
282/288, 230/236 .561/.573 112 LS with 1.65 ratio rockers
Butler/Comp Pontiac Custom Grind Billet Hydraulic Roller Cam/Lifter Kit BPI-CL-BP8022SP
Last edited by roy381; 02-03-2023 at 03:30 PM.
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