A direct replacement for stock manifolds on 1968-1973 Corvettes Power+Plus Manifolds offer a unique dual-plane, 180-degree design for substantially increased power between idle and 5500 RPM for regular models and 1500 to 6500 RPM for High Performance Models.
All models include a square bore carb adaptor plate and gasket for use with Holley or Edelbrock square bore carbs. Valve cover with oil filler required. Not compatible with Holley Spreadbore Carb. Choose from high-polish or satin finishes.