Product details:

Primary: 2 in. Collector: 3 1/2 in. Parts Breakdown 30064 Reduce exhaust flow restriction in your big block with a set of long tube headers from . Manufactured with heavy-gauge tubing and thick flanges these pieces are designed to last. The black painted finish gives them a clean look and helps protect against corrosion. These headers are designed to fit a number of GM body styles that were originally fitted with this engine or had it as an option. Let help you improve the performance, and sound of your BBC-equipped car. Features Big block type: Gen IV (4) Fits: GM A and F Bodies Finish: Black Painted Tubing: Mandrel Bent Port: Square (1 7/8 in. L x 1 7/8 in. W) Collector flange type: 3-bolt Includes (2) Headers (2) Exhaust manifold gaskets (Graphite) (2) Collector flange gaskets (Graphite) (16) Exhaust manifold bolts (3/8 in. -16 x 3/4 in., Black oxide coated) (6) Collector bolts (3/8 in -16 x 1 in., Black oxide coated) (6) Collector nuts (3/8 in. -16, Black oxide coated) Accessory Compatability Air Conditioning: Yes (Brackets must be modified) Power Brakes: Yes Power Steering: Yes Smog Pump: Not Applicable Transmission Compatability Automatic Column Shifter: Yes (Except Camaro) Automatic Floor Shifter: Yes Manual Column Shifter: Yes (Except Monte Carlo, and wagons) Manual Floor Shifter: Yes (Except Monte Carlo, and wagons) Fitment 1970 - 1972 Camaro (must use original dimension big block frame stands and motor mounts) 1964 - 1977 Chevelle (must use original dimension big block frame stands and motor mounts) 1970 - 1974 Monte Carlo (must use original dimension big block frame stands and motor mounts) 1971 - 1974 GM Full-Size cars (must use original dimension big block frame stands and motor mounts) Note: Reducers are not included with this set of headers