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. Kit is made of aluminum and stainless steel with brass parts and spherical rod ends.
These high-performance items are not eligible for any further discounts or promotional pricing.
High Performance, designed to improve performance.
Find in OPGI's 2018 Chevelle Catalog page 525.
This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.