1955-1957 Small Block Chevy Chassis Headers, AHC Coated

These Speedway headers allow you to keep the exhaust system under your '55-'57 Chevy car. The "3/4-length" design provides more ground clearance than full-length headers, yet makes more power than "shorty" style headers. These chassis headers fit 283-400 S/B Chevy V8s and has 1-5/8" primary tubes with 2-1/2" collectors. These ceramic coated headers provide superior performance and durability.

• Mid-length design offers maximum ground clearance
• Designed to work with stock or 605 power steering box
• Fits cars using an original V-8 pitman arm (some aftermarket arms may cause an interference)
• Will work with side engine mounts with engine in stock location
• Fits standard and Vortec-style small-block Chevy heads (not D-port, LT-1 or ZZ-4)
• Does not work with stock clutch linkage
• (Please use the chart below to help with dimensions.) Drivers side A dimension is 3-1/2" up by the head and 5-5/8" at the collector, B dimension is 15", and C dimension is 21".  Passenger side A dimension is 4" at the head and 6-5/8" at the collector, B is 15", and C is 21". 

NOTE:  These headers do not fit angle-plug heads. They do work with a "605"steering box.  They work with most any bellhousing and most any motor mounts.  Some aftermarket starters may be in the way.  Designed to fit cars using an original V-8 pitman arm.  Some aftermarket arms may cause an interference.

The use of a shorty spark plug may aide in clearance between the plug wire and header primary tubes.

Header Dimension Chart (JPG)

AHC Warning: AHC coatings will burn and be damaged at exhaust temperatures over 1300 degrees. A lean fuel mixture can generate exhaust temperatures exceeding 1700-1900 degrees. If the coating is damaged due to a lean condition, the coating will not be warranted, but can be recoated for a fee.

Not legal for sale or use in California on pollution controlled vehicles