Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing Chevy S10, GMC S15, V8 engine swap specific headers for over 30 years. 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 polished-silver ceramic-coated, MID-LENGTH TUBE headers are uniquely designed to provide additional spark plug clearance when installed on a Small Block Chevy 283-400 (Gen 1) fitted with Angle Plug heads ( GM L98 aluminum heads, or equivalent design) into 1982-2004 Chevy S10/Blazer, GMC S15/Jimmy 2WD trucks. Fits both manual and automatic transmission trucks. The smooth 1-1/2 in. tube design provides ample exhaust flow to let your transplanted 283-400 SB Chevy engine breathe easy, and produce additional horsepower and torque over factory manifolds.
To ensure a proper installation, it is recommended that these headers be installed with Trans-Dapt Performance Product's #9906 engine swap mount kit.
These headers have a high temperature, POLISHED-SILVER ceramic finish that resists corrosion, and can withstand temperatures up to 1400 degree F. This finish is covered by a 5 year factory warranty, in addition to Hedman's standard lifetime header warranty.
Specifications:
| Description_DEF |
[B@5ee139a8 |
| Description_DES |
[B@51d626fa |
| Description_EXT |
[B@5c160f4e |
| Description_FAB |
[B@64d57554 |
| Description_FAB |
[B@332e3c1f |
| Description_FAB |
[B@53af2d76 |
| Description_FAB |
[B@3f2f3432 |
| Description_FAB |
[B@701f8956 |
| Description_FAB |
[B@32939d8e |
| Description_INV |
[B@187dd237 |
| Description_MKT |
[B@5e35ebae |
| Description_SHO |
[B@526c8c07 |
| Title |
HEDMAN HEDDERS HTC COATED HEADERS; 1-1/2 IN. TUBE DIA.; 2-1/2 IN. COLL.; ANGLE PLUG HEADS; MID-LENGTH DESIGN |
| Tube Diameter |
1-1/2 in. |
| Mounting Hardware Included |
Yes |
| Head Type |
Angle Plug Heads |
| 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 |
| Header Fasteners Included |
Yes |
| Installation Hardware Included |
Yes |
| Motor Mounts Included |
No |
| Reducers Included |
Yes |
| Tube Size |
1-1/2 in. |
| Y-Pipe Included |
No |
| Quantity |
Sold as a pair. |
| Primary Tube Gauge |
16g |
| Primary Tube Diameter (in) |
1.50 in. |
| Package Contents |
Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware |
| Header Material |
Mild Steel |
| Header Finish |
HTC Polished Silver Ceramic-Metallic |
| Cylinder Head Port Shape |
Round |
| Cylinder Head |
Fits Factory GM Aluminum Angle Plug and Straight Plug Heads. |
| Header Construction |
MILD STEEL- Standard-Duty |
| Replacement Gasket |
27030 |
| Replacement Head Flange Gasket |
27030 |
| California Proposition 65 |
WARNING: Cancer & Reproductive Harm. For more info visit www.P65Warnings.ca.gov |
| Variations |
69530 |
| Tube Material Thickness |
16g |
| Tube Style |
Mid-Length |
| Air Conditioning |
Yes |
| Automatic Transmission - Column |
No |
| Automatic Transmission - Floor |
Yes |
| Manual Transmission - Column |
No |
| Manual Transmission - Floor |
Yes |
| Tube Length |
Mid-Length Tubes |
| Material |
Mild Steel |
| Tube Design |
Standard |
| Flange Thickness |
0.3125 in. |
| Collector Attachment |
2-1/2 in. |
| Collector Diameter |
2-1/2 in. |
| Collector Size |
2-1/2 in. |
| Exhaust System Dia |
2-1/2 in. |
| Reducer Outlet Size |
2-1/2 in. |
| Drivetrain |
2WD Only! |
| Key Feature |
Angle Plug Heads |
| Collector Style |
BALL and SOCKET Style (Gasketless) |
| Engine |
Chevy SB 283-400 (Gen 1) 1958-86 |
| Contents |
headers, gaskets (when applicable), 3-bolt exhaust adapters, hardware |
| Finish |
HTC Polished Silver Ceramic-Metallic |
| Finish Type |
HTC SILVER (polished) Ceramic-metallic Coating |
| Header Style |
Mid-Length Tube |
| E.O. # |
No |
| Emissions Notes |
Not Legal For Street Use on '75-Later Model Years! Legal for off-road use only. |
| Notes |
Requires Trans-Dapt 9906 engine mounts. Fits (Chevy aluminum) angle plug heads |
| Header Port Shape |
Round |
| Port Shape |
Round |
| Engine Notes |
SB Chevy 283-400 (Gen I) |
| Flange Style |
Standard |
| Power Steering |
Yes |
