Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing LONG and MID-LENGTH tube headers for Chevy trucks for nearly as long. Each set uses mild steel, smooth flowing, CNC mandrel bent tubes, that are hand-welded to ensure each pair is identical to the next. Hedman's unique, gasketless ball and socket collector design allows your Small Block Chevy exhaust system to bolt up, even if it is not perfectly aligned with the header collectors.
These uncoated, LONG-TUBE headers fit a wide range of early to mid-year 1967-1991 2WD & 4WD Chevy/GMC 1/2 Ton and 3/4 ton trucks, Blazers and Suburbans (check the application listings for exact fitment), powered by a Small Block Chevy engine (without A.I.R. system). These headers offer additional clearance to address clutch shaft clearance issues, when the cross shaft is located under, or behind the rear, driver side exhaust port. This The smooth 1-5/8 in. tube design provides ample exhaust flow to let your truck's 283-400 SB Chevy engine breathe easy, and produce maximum horsepower and torque.
These headers are uncoated, and ship from the factory with a temporary black paint that will burn off when submitted to normal operating temperatures. For protection against the element and lower under hood temperatures, these headers are also available with a silver or black ceramic-metallic finish.
Each set includes a pair of gaskets, header flange bolts and collector bolts. No collector gasket is needed.
Hedman Hedders is so confident in the quality of its headers that these headers are factory backed by a Limited Lifetime Warranty.
- Long Tube Header Design Provides Excellent Top-End Horsepower and Torque.
- Ball & Socket Collector Design requires No Gasket, and Allows For More Exhaust System Misalignment than Old School, Gasket-Style Header Collectors
- Includes All The Necessary Mounting Hardware, Gaskets and Reducers (exhaust adapters)
- Limted Lifetime Warranty On Construction, Five Year Warranty on Factory-Applied Header Coating!
- Proud To Say, Made In The USA, Since 1954!
- Handcrafted, Mild Steel Construction.
Application Summary:
| Year | Make/Model |
|---|---|
| 1976-1980 | Chevrolet C10 |
| 1967-1969 | Chevrolet C10 Pickup |
| 1967 | Chevrolet C10 Suburban |
| 1976-1980 | Chevrolet C20 |
| 1967-1969 | Chevrolet C20 Pickup |
| 1967 | Chevrolet C20 Suburban |
| 1976-1980 | Chevrolet C20 Suburban |
| 1976-1978 | Chevrolet C30 |
| 1967-1969 | Chevrolet C30 Pickup |
| 1975-1980 | Chevrolet K10 |
| 1967 | Chevrolet K10 Pickup |
| 1967 | Chevrolet K10 Suburban |
| 1975-1979 | Chevrolet K10 Suburban |
| 1975-1980 | Chevrolet K20 |
| 1967 | Chevrolet K20 Pickup |
| 1967 | Chevrolet K20 Suburban |
| 1975-1980 | Chevrolet K20 Suburban |
| 1975-1979 | Chevrolet K5 Blazer |
| 1976 | GMC C15 |
| 1978 | GMC C15 |
| 1967-1968 | GMC C15/C1500 Pickup |
| 1967 | GMC C15/C1500 Suburban |
| 1979-1980 | GMC C1500 |
| 1976-1978 | GMC C25 |
| 1978 | GMC C25 Suburban |
| 1967-1968 | GMC C25/C2500 Pickup |
| 1967 | GMC C25/C2500 Suburban |
| 1979 | GMC C2500 |
| 1980 | GMC C2500 Suburban |
| 1976-1978 | GMC C35 |
| 1967-1968 | GMC C35/C3500 Pickup |
| 1979 | GMC C3500 |
| 1975-1979 | GMC Jimmy |
| 1975-1978 | GMC K15 |
| 1975-1978 | GMC K15 Suburban |
| 1967 | GMC K15/K1500 Pickup |
| 1967 | GMC K15/K1500 Suburban |
| 1979-1980 | GMC K1500 |
| 1979-1980 | GMC K1500 Suburban |
| 1975-1978 | GMC K25 |
| 1975-1978 | GMC K25 Suburban |
| 1967 | GMC K25/K2500 Pickup |
| 1967 | GMC K25/K2500 Suburban |
| 1979-1980 | GMC K2500 |
| 1979-1980 | GMC K2500 Suburban |
| Attributes | |
| Air Conditioning | Yes, Yes, Yes |
| Air Conditioning Notes | Must modify rotary A/C Bracket (121), Must modify rotary A/C Bracket (121) |
| Application | Automotive |
| ASIN | B000CO7KJ8 |
| Automatic Transmission - Column | Yes, Yes, Yes |
| Automatic Transmission - Floor | Yes, Yes, Yes |
| Bolts/Studs Included | Yes, Yes, Yes |
| California Proposition 65 | WARNING: Cancer - www.P65Warnings.ca.gov |
| Catalytic Converter(s) Included | No, No, No |
| Chassis Compatibility | NOT For Vehicles With Offset (right) Engine Position!, NOT For Vehicles With Offset (right) Engine Position! |
| Coating/Finish | Painted |
| Collector Attachment | 3", 3 in., 3 in. |
| Collector Bolts Included | Yes, Yes, Yes |
| Collector Diameter | 3 in., 3 in. |
| Collector Size | 3", 3 in., 3 in. |
| Collector Style | Ball and Socket Style (Gasketless), BALL and SOCKET Style (Gasketless), BALL and SOCKET Style (Gasketless) |
| Collector Tube Size (in.) | 3 |
| Contents | headers, gaskets (when applicable), 3-bolt exhaust adapters, hardware, headers, gaskets (when applicable), 3-bolt exhaust adapters, hardware, One pair of headers, head flange gaskets, collector flange gaskets (when applicable), 3-bolt exhaust adapters, mounting hardware |
| Country of Origin (Primary) | US |
| Crossover Pipe Included | NO, No, No |
| Cylinder Head | Fits Factory GM Aluminum or Cast Iron, Angle Plug and Straight Plug Heads., Fits Factory GM Aluminum Angle Plug Cylinder Head (L98 Profile Only), Fits Factory GM Aluminum Angle Plug Cylinder Head (L98 Profile Only) |
| Cylinder Head Port Shape | Round, Round, Round |
| Drivetrain | 2WD |
| E.O. # | No, No |
| Emission Code | Not in CA |
| Emissions Notes | NOT LEGAL FOR STREET USE ON '75-LATER MODEL YEARS! Legal for off-road use only., NOT LEGAL FOR STREET USE ON '75-LATER MODEL YEARS! Legal for off-road use only., Not Legal For Street Use on '75-Later Model Years! Legal for off-road use only. |
| Engine Make/Size | Chevy Small Block (262-400) |
| Exhaust System Dia | 2-1/2", 2-1/2 in., 2-1/2 in. |
| Finish | Uncoated, Uncoated |
| Finish Type | Uncoated Mild steel, Uncoated Mild steel, UNCOATED Mild Steel! Shipped with Temporary Paint. |
| Flange Style | Standard, Standard, Standard |
| Flange Thickness | 0.25", 0.3125 in., 0.3125 in. |
| Gasket # | 27500 |
| Gasket Or Seal Included | Yes, Yes, Yes |
| Harmonized Tariff Code (Schedule B) | 8708925000 |
| Hazardous Material Code | N |
| Head Flange Gasket | 27500 |
| Header Construction | Standard-Duty, MILD STEEL- Standard-Duty |
| Header Fasteners Included | Yes, Yes |
| Header Finish | Uncoated, Uncoated, Uncoated |
| Header Material | Mild Steel, Mild Steel, Mild Steel |
| Header Port Shape | Round, Round, Round |
| Header Style | Long Tube, Long Tube |
| IMPORTANT! | 4X4, Manual trans. models w/ Hydraulic clutch. Doesn't work with Slave cylinder., 4X4, Manual trans. models w/ Hydraulic clutch. Doesn't work with Slave cylinder., 4X4, Manual trans. models w/ Hydraulic clutch. Doesn't work with Slave cylinder. |
| Installation Hardware Included | Yes, Yes, Yes |
| Life Cycle Status Code | Available to Order |
| Manual Transmission - Column | No, No, No |
| Manual Transmission - Floor | No, Yes, Yes |
| Material | Steel, Mild Steel, Mild Steel |
| Motor Mounts (Included) | NO, No |
| Motor Mounts Included | NO, No, No |
| Mounting Hardware Included | Yes, Yes, Yes |
| NAFTA Preference Criterion Code | B |
| Notes | 67-91 GM. Full Size Blazer, Jimmy 283-400 2-4WD, 67-91 GM. Full Size Blazer, Jimmy 283-400 2-4WD, 67-91 GM. Full Size Blazer, Jimmy 283-400 2-4WD |
| Package Contents | One pair of headers, head flange gaskets, collector flange gaskets (when applicable), 3-bolt exhaust adapters, mounting hardware, Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware, Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware |
| Port Shape | Round, Round, Round |
| Power Steering | Yes, Yes, Yes |
| Primary Tube Diameter (in) | 1.625", 1.625 in., 1.625 in. |
| Primary Tube Gauge | 16g, 16g, 16g |
| Quantity | Sold as a pair., Sold as a pair., Sold as a pair. |
| Reducer Outlet Size | 2-1/2", 2-1/2 in., 2-1/2 in. |
| Reducers Included | Yes, Yes, Yes |
| Replacement Gasket | 27500, 27500, 27500 |
| Replacement Head Flange Gasket | 27500, 27500 |
| SDR Required Flag | N |
| Transmission Mount Included | NO |
| Transmission Mount/Crossmember (Included) | No, No |
| Transmission Mount/Crossmember Included | No |
| Tube Design | LONG TUBE, LONG TUBES, Standard |
| Tube Diameter | 1-5/8 in., 1-5/8" |
| Tube Direction | Down Swept |
| Tube Length | LONG Tubes, Long Tubes, Long Tubes |
| Tube Material Thickness | 16g, 16g, 16g |
| Tube Size | 1.625, 1-5/8", 1-5/8 in., 1-5/8 in. |
| Tube Style | Long Tube, Long Tubes, Long Tubes |
| Tuned | NO, No, No |
| Variations | 66092, 69892, 66092, 69892, 66092, 69892 |
| Weld-Up | No, No, No |
| with A.I.R. | No |
| with A.I.R. System | No, No, No |
| with EGR | No, No, No |
| Y-Pipe Included | No, No, No |
| GTIN | 00732611690928 |