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 Big Block 7.4L Chevy exhaust system to bolt up, even if it is not perfectly aligned with the header collectors.
These uncoated, LONG-TUBE headers fit 1988-95 2WD 3/4 and 1 ton Chevy Trucks with a factory 7.4L Chevy powerplant (check the application listings for exact fitment). This header series will also fit C1500 big-block swaps, as long as the big-block is offset to the passenger side like a factory engine. The smooth 1-3/4 in. tube design provides ample exhaust flow to let your OBS Chevy truck's Big Block 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 underhood 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.
- Handcrafted, Mild Steel Construction.
- 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!
Application Summary:
| Year | Make/Model |
|---|---|
| 1991-1995 | Chevrolet C2500 |
| 1988-1995 | Chevrolet C3500 |
| 1988 | Chevrolet R20 |
| 1989 | Chevrolet R2500 |
| 1988 | Chevrolet R30 |
| 1989-1991 | Chevrolet R3500 |
| 1991-1995 | GMC C2500 |
| 1988-1995 | GMC C3500 |
| 1988-1989 | GMC R2500 |
| 1988-1991 | GMC R3500 |
| Attributes | |
| Air Conditioning | Yes, Yes, Yes |
| Application | Automotive |
| ASIN | B000COBIZA |
| 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 |
| 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 | Stock Profile Heads, Stock Profile Heads, Stock Profile Heads |
| Cylinder Head Port Shape | Round, Round, Round |
| 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 7.4L (Vortec) |
| 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. |
| Footnotes | 127. Late Model Chassis. ENGINE OFFSET to passenger side of vehicle., 127. Late Model Chassis. ENGINE OFFSET to passenger side of vehicle. |
| Gasket # | 27530 |
| Gasket Or Seal Included | Yes, Yes, Yes |
| Harmonized Tariff Code (Schedule B) | 8708925000 |
| Hazardous Material Code | N |
| Head Flange Gasket | 27530 |
| 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 |
| Installation Hardware Included | Yes, Yes, Yes |
| Life Cycle Status Code | Available to Order |
| Manual Transmission - Column | No, No, No |
| Manual Transmission - Floor | Yes, 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 | 88-95 1/2, 3/4, 1 Ton Truck/SUV 396-502, 88-95 1/2, 3/4, 1 Ton Truck/SUV 396-502 |
| 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) | 1.75", 1.75 in., 1.75 in. |
| Primary Tube Gauge | 18g, 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 | 27530, 27530, 27530 |
| Replacement Head Flange Gasket | 27530, 27530 |
| 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 | 1-3/4 in., 1-3/4" |
| Tube Direction | Down Swept |
| Tube Length | LONG Tubes, Long Tubes, Long Tubes |
| Tube Material Thickness | 18g, 16g, 16g |
| Tube Size | 1.75, 1-3/4", 1-3/4 in., 1-3/4 in. |
| Tuned | NO, No, No |
| Variations | 69456, 69850, 69456, 69850, 69456, 69850 |
| 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 | 00732611694506 |