Hedman Hedders HTC Coated Headers; 1-5/8 in. Tube Dia.; 3 in. Coll.; FULL LENGTH Design 68126
Specifications:
| Variations | 68120, 68128 |
| Cylinder Head Port Shape | Round |
| Header Finish | HTC Polished Silver Ceramic-Metallic |
| Mounting Hardware Included | Yes |
| Installation Hardware Included | Yes |
| Primary Tube Diameter (in) | 1.625 in. |
| Tuned | No |
| Weld-Up | No |
| Collector Bolts Included | Yes |
| Catalytic Converter(s) Included | No |
| Crossover Pipe Included | No |
| Collector Size | 3 in. |
| Quantity | Sold as a pair. |
| Cylinder Head | Stock Profile Heads |
| Replacement Gasket | 27500 |
| Automatic Transmission - Column | No |
| Header Construction | MILD STEEL- Standard-Duty |
| Emissions Notes | Not Legal For Street Use on '75-Later Model Years! Legal for off-road use only. |
| Reducer Outlet Size | 2-1/2 in. |
| Gasket Or Seal Included | Yes |
| Flange Thickness | 0.3125 in. |
| Collector Attachment | 3 in. |
| Exhaust System Dia | 2-1/2 in. |
| Material | Mild Steel |
| California Proposition 65 | WARNING: Cancer & Reproductive Harm. For more info visit www.P65Warnings.ca.gov |
| Collector Style | BALL and SOCKET Style (Gasketless) |
| Tube Diameter | 1-5/8 in. |
| Tube Style | Long Tubes |
| Tube Size | 1-5/8 in. |
| Tube Length | Long Tubes |
| Tube Design | Standard |
| Finish | HTC Polished Silver Ceramic-Metallic |
| Replacement Head Flange Gasket | 27500 |
| E.O. # | No |
| Contents | Header(s), new bolts, gasket(s) to head, reducer(s) and hardware, instructions |
| Title | HEDMAN HEDDERS HTC COATED HEADERS; 1-5/8 IN. TUBE DIA.; 3 IN. COLL.; FULL LENGTH DESIGN |
| Notes | 55-57 Chev. Pass. Car 283-400 |
| Collector Diameter | 3 in. |
| Automatic Transmission - Floor | Yes |
| Package Contents | Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware |
| Tube Material Thickness | 16g |
| Primary Tube Gauge | 16g |
| with EGR | No |
| Header Fasteners Included | Yes |
| Bolts/Studs Included | Yes |
| Header Style | Long Tube |
| Reducers Included | Yes |
| Air Conditioning | Yes |
| Y-Pipe Included | No |
| Motor Mounts Included | No |
| with A.I.R. System | No |
| Header Material | Mild Steel |
| Finish Type | HTC SILVER (polished) Ceramic-metallic Coating |
| Flange Style | Standard |
| Header Port Shape | Round |
| Manual Transmission - Column | No |
| Manual Transmission - Floor | Yes |
| Port Shape | Round |
| Power Steering | Yes |
| Description_SHO | HEADERS, COATED |
| Description_INV | HEDMAN GM CAR HEADERS-SILVER |
| Description_DEF | Exhaust Header |
| Description_DES | 1-5/8 in. Silver Long-Tube Headers For 1955-57 Chevy with 283-400 |
| Description_ASM | 1957 Chevrolet Bel Air Base CID 283 Naturally Aspirated GAS, 1957 Chevrolet One-Fifty Series Base CID 283 Naturally Aspirated GAS, 1957 Chevrolet Two-Ten Series Base CID 283 Naturally Aspirated GAS |
| Description_EXT | HTC Coated Headers; 1-5/8 in. Tube Dia.; 3 in. Coll.; FULL LENGTH Design |
| Description_FAB | Handcrafted, Mild Steel Construction. |
| Description_FAB | Long Tube Header Design Provides Excellent Top-End Horsepower and Torque. |
| Description_FAB | Ball & Socket Collector Design requires No Gasket, and Allows For More Exhaust System Misalignment than Old School, Gasket-Style Header Collectors |
| Description_FAB | Includes All The Necessary Mounting Hardware, Gaskets and Reducers (exhaust adapters) |
| Description_FAB | Limted Lifetime Warranty On Construction, Five Year Warranty on Factory-Applied Header Coating! |
| Description_FAB | Proud To Say, Made In The USA, Since 1954! |
This Part Fits:
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 1957 | Chevrolet | Bel Air | Base | Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: No; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: Yes; Footnotes: (103) Will fit with angle plug heads (Chevy aluminum only, L98).; Footnotes: (219) Will fit 605 steering box.; Footnotes: (25) Engine swap, all parts must be factory stock.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.; Does not require EO if existing emission controls are not removed.; Engine Family: SB Chevy 283-400 (Gen 1) |
| 1957 | Chevrolet | One-Fifty Series | Base | Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: No; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: Yes; Footnotes: (103) Will fit with angle plug heads (Chevy aluminum only, L98).; Footnotes: (219) Will fit 605 steering box.; Footnotes: (25) Engine swap, all parts must be factory stock.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.; Does not require EO if existing emission controls are not removed.; Engine Family: SB Chevy 283-400 (Gen 1) |
| 1957 | Chevrolet | Two-Ten Series | Base | Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: No; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: Yes; Footnotes: (103) Will fit with angle plug heads (Chevy aluminum only, L98).; Footnotes: (219) Will fit 605 steering box.; Footnotes: (25) Engine swap, all parts must be factory stock.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.; Does not require EO if existing emission controls are not removed.; Engine Family: SB Chevy 283-400 (Gen 1) |