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Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing Chevy truck headers for nearly as long. Whether your cherished truck is powered by a Chevy small block, big block, or LS engine, Hedman Hedders manufactures a header model for you in its Whittier, California manufacturing facility. This 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, MID-LENGTH tube headers fit 1967-74 4WD Blazers, 1/2 ton and 3/4 ton Chevy and GMC trucks, Suburbans with a SB Chevy engine (centered engine chassis only). Check the application listings for exact fitment. The smooth 1-5/8 in tube design provides ample exhaust flow to let your Blazer or K10/K20, K15/K25 truck's 283-400 SB Chevy engine breathe easy, and produce maximum horsepower and torque. The MID-LENGTH design of these headers keeps the header connection up, tighter to the body, so you can keep your entire exhaust above the frame rails.
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.
Specifications:
| Description_DEF | [B@3234057f |
| Description_DES | [B@48389f92 |
| Description_EXT | [B@281fad95 |
| Description_FAB | [B@5ff5db8d |
| Description_FAB | [B@4d7822f1 |
| Description_FAB | [B@41b0e0c3 |
| Description_FAB | [B@14169e65 |
| Description_FAB | [B@654e16d9 |
| Description_FAB | [B@69adcf2b |
| Description_INV | [B@2fdd8c25 |
| Description_MKT | [B@f18ca0d |
| Description_SHO | [B@1a75fde9 |
| Cylinder Head | Fits Factory GM Aluminum Angle Plug and Straight Plug Heads. |
| Tube Diameter | 1-5/8 in. |
| Mounting Hardware Included | Yes |
| Tube Size | 1-5/8 in. |
| with A.I.R. System | No |
| with EGR | No |
| Weld-Up | No |
| Tuned | No |
| Bolts/Studs Included | Yes |
| Catalytic Converter(s) Included | No |
| Collector Bolts Included | Yes |
| Crossover Pipe Included | No |
| Gasket Or Seal Included | Yes |
| Installation Hardware Included | Yes |
| Motor Mounts Included | No |
| Reducers Included | Yes |
| Tube Length | Mid-Length Tubes |
| Y-Pipe Included | No |
| Quantity | Sold as a pair. |
| Primary Tube Gauge | 16g |
| Primary Tube Diameter (in) | 1.625 in. |
| Package Contents | Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware |
| Header Material | Mild Steel |
| Header Finish | Uncoated |
| Cylinder Head Port Shape | Oval |
| Header Construction | MILD STEEL- Standard-Duty |
| Replacement Gasket | 27520 |
| Replacement Head Flange Gasket | 27520 |
| California Proposition 65 | WARNING: Cancer. For more info visit www.P65Warnings.ca.gov |
| Tube Material Thickness | 16g |
| Tube Design | Standard |
| Tube Style | Mid-Length |
| Air Conditioning | Yes |
| Automatic Transmission - Column | Yes |
| Automatic Transmission - Floor | Yes |
| Manual Transmission - Column | No |
| Manual Transmission - Floor | Yes |
| Collector Attachment | 3 in. |
| Collector Diameter | 3 in. |
| Collector Size | 3 in. |
| Contents | headers, gaskets (when applicable), 3-bolt exhaust adapters, hardware |
| Transmission Compatibility | Manual Trans. must Use TailShaft style crossmember or modify factory crossmember |
| Chassis Compatibility | NOT For Vehicles With Offset (right) Engine Position! |
| Power Steering | Yes |
| Air Conditioning Notes | 70-Up: LARGE compressor use Hedman 20110; SMALL compressor, modify OE bracket. |
| Finish Type | UNCOATED Mild Steel! Shipped with Temporary Paint. |
| Flange Style | Standard |
| Flange Thickness | 0.3125 in. |
| Header Port Shape | Oval Port |
| Header Style | Mid-Length Tube |
| Port Shape | Oval |
| Materials | Mild Steel 16g Tubes; 5/16 in. Head Flanges; 1/4 in. Collector Flanges |
| Material | Mild Steel |
| Title | HEDMAN HEDDERS 1967-74 CHEVY/GMC 4WD PICKUP, SUBURBAN, K5 BLAZER/JIMMY WITH SB CHEVY; STANDARD-DUTY MILD STEEL, 1-5/8 IN. TUBE DIAMETER, MID-LENGTH DESIGN HEADERS, UNCOATED; 3 IN. BALL/SOCKET COLLECTOR |
| Reducer Outlet Size | 2-1/2 in. |
| Collector Style | BALL and SOCKET Style (Gasketless) |
| Exhaust System Dia | 2-1/2 in. |
| Special Engine Notes | Designed for use with the SB Chevy engine located in the factory position. |
| Drivetrain | 4WD |
| E.O. # | No |
| Emissions Notes | Not Legal For Street Use on '75-Later Model Years! Legal for off-road use only. |
| Finish | Uncoated |
