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OPGI Price: $634.99
Part Type: (P) High Performance, designed to improve performance
Sold As: EACH
2017 Late Monte Carlo Catalog Page: 254
C-66-R is made to fit 396-502 non-EGR engines with rectangular port heads. C-66-O is made to fit 396-502 non-EGR engines with oval port cylinder heads. These cast aluminum manifolds have a low profile design for hood clearance, balanced firing order port runner arrangement and a consistent part-throttle operation with horsepower and torque gains.