1955-57 Chevrolet 265-400 Mctbc Ceramic Coated Rectangular Port Full Length Patriot Headers

These popular 1955-57 Chevrolet passenger car headers offer superior performance and are designed to clear most air conditioning power brake and power steering systems. Extra ground clearance makes slammed vehicles driveable and above frame rail ex haust system installation easy.The Metallic Ceramic Thermal Barrier Coating (MCTBC) is simply the best header finish on the market and is available on all Patriot headers. MCTBC protects and extends the life of headers by creating a thermal bar rier that significantly lowers underhood temperatures and protects the substrate metal from thermal fatigue. After MCTBC is applied it is polished with a vibratory finishing process that produces a high luster aluminum appearance. The polishing process c ompresses and activates the coating which increases the surface hardness to produce a finish that is 60% more corrosion resistant than an unpolished surface. This coating is easy to maintain and will last for years under normal operating conditions. Benefits:Increased horsepower and torqueImproved throttle responseImproved fuel economyImproved engine compartment aesthetics Specifications:1-3/4 tube3 c ollector5/16 flange thicknessRectangular portIncluded with each set are installation hardware collector reducers gaskets and instructions.For un-coated (raw steel) headers see Part # TF700403.Important: Be sure to read the important Application and Emission Notes listed below pertaining to each header system for correct application. Note: Check your local or state laws before installing. Shipped oversize.Applications:1955-57 265ci - 400ci Chevrolet small block:With or Without Air ConditioningWith or Without Power SteeringWith or Without Power BrakesAutomatic Transmission with Floor ShiftManual Transmission with Floor Shift Application Notes:Will not fit column shiftFits most angle plug heads Fits with either 3/4 forward or stock location side mounts rear transmissionmount or equivale nt and stock or 605 steering box. Stock mid mount and earson the frame must be removedHeader is designed to fit cars using original V8 pitman arm not 6 cylinder pitmanarm. Aftermarket pitman arms must be same as OE for proper header fit Emission Notes: Legal only for off-highway use (except in California or states that have adopted California emission standards) racing use or for use on pre-emission-controlled motor veh icles/motor vehicle engines (pre-1974 domestic vehicles certified to California standards pre-1974 domestic vehicles certified to federal standards and all pre-1974 foreign vehicles) per the manufacturers application guide.