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 20 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 uncoated, LONG-TUBE headers are designed specifically for installing a Small Block Chevy 283-400 (Gen 1) engine into 1982-1993 Chevy S10/Blazer, GMC S15/Jimmy trucks. The smooth 1-5/8 in. tube design provides ample exhaust flow to let your 283-400 SB Chevy engine breathe easy, and produce maximum horsepower and torque.
To ensure a proper installation, it is recommended that these headers be installed with Trans-Dapt Performance Product's #4686 engine swap mount kit, Turbo 350 and 168 tooth flywheel.
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_ASM |
1982-1993 Chevrolet S10 CID 305 GAS RWD, 1982-1993 Chevrolet S10 CID 400 GAS RWD, 1983-1993 Chevrolet S10 Blazer CID 305 GAS RWD, 1983 Chevrolet S10 Blazer CID 350 GAS RWD, 1983-1993 Chevrolet S10 Blazer CID 400 GAS RWD, 1982-1990 GMC S15 CID 305 GAS RWD, 1982-1990 GMC S15 CID 350 GAS RWD, 1982-1990 GMC S15 CID 400 GAS RWD, 1983-1991 GMC S15 Jimmy CID 305 GAS RWD, 1983-1991 GMC S15 Jimmy CID 350 GAS RWD, 1983-1991 GMC S15 Jimmy CID 400 GAS RWD, 1991-1993 GMC Sonoma CID 305 GAS RWD, 1991-1993 GMC Sonoma CID 350 GAS RWD, 1991-1993 GMC Sonoma CID 400 GAS RWD |
| Description_DEF |
Exhaust Header |
| Description_DES |
Uncoated Engine Swap Headers; 1-5/8 in. Tube Dia; FULL LENGTH |
| Description_INV |
HEDMAN GM TRUCK HEADER-UNCOATED |
| Description_FAB |
Handcrafted, Mild Steel Construction. |
| Description_FAB |
Long Tube, Under Chassis 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! |
| Description_EXT |
Standard Uncoated Engine Swap Hedders; 1-5/8 in. Tube Dia.; 3 in. Coll.; FULL LENGTH Design |
| Description_SHO |
HEADERS, UNCOATED |
| Description_MKT |
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 20 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 uncoated, LONG-TUBE headers are designed specifically for installing a Small Block Chevy 283-400 (Gen 1) engine into 1982-1993 Chevy S10/Blazer, GMC S15/Jimmy trucks. The smooth 1-5/8 in. tube design provides ample exhaust flow to let your 283-400 SB Chevy engine breathe easy, and produce maximum horsepower and torque.
To ensure a proper installation, it is recommended that these headers be installed with Trans-Dapt Performance Product's #4686 engine swap mount kit, Turbo 350 and 168 tooth flywheel.
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.
|
| Air Conditioning |
Yes |
| Automatic Transmission - Column |
No |
| Automatic Transmission - Floor |
Yes |
| Bolts/Studs Included |
Yes |
| California Proposition 65 |
WARNING: Cancer. For more info visit www.P65Warnings.ca.gov |
| Catalytic Converter(s) Included |
No |
| Collector Attachment |
3 in. |
| Collector Bolts Included |
Yes |
| Collector Diameter |
3 in. |
| Collector Size |
3 in. |
| Collector Style |
BALL and SOCKET Style (Gasketless) |
| Contents |
headers, gaskets (when applicable), 3-bolt exhaust adapters, hardware |
| Crossover Pipe Included |
No |
| Cylinder Head |
Fits Factory GM Aluminum Angle Plug and Straight Plug Heads. |
| Cylinder Head Port Shape |
Round |
| Drivetrain |
2WD Only! |
| E.O. # |
No |
| Emissions Notes |
Not Legal For Street Use on '75-Later Model Years! Legal for off-road use only. |
| Engine |
Chevy SB 283-400 (Gen 1) 1958-86 |
| Exhaust System Dia |
2-1/2 in. |
| Finish |
Uncoated |
| Finish Type |
Uncoated Mild steel |
| Flange Style |
Standard |
| Flange Thickness |
0.3125 in. |
| Footnotes |
130. Must use Trans Dapt Motor Mount Kit #4690. |
| Gasket Or Seal Included |
Yes |
| Head Type |
Factory Heads |
| Header Construction |
MILD STEEL- Standard-Duty |
| Header Fasteners Included |
Yes |
| Header Finish |
Uncoated |
| Header Material |
Mild Steel |
| Header Port Shape |
Round |
| Header Style |
Long Tube |
| Installation Hardware Included |
Yes |
| Installation Notes |
The use of a DELCO-RAMEY #323-255 or Chevrolet #187655 starter may be required. |
| Manual Transmission - Column |
No |
| Manual Transmission - Floor |
No |
| Material |
Mild Steel |
| Motor Mounts Included |
No |
| Mounting Hardware Included |
Yes |
| Notes |
Two tubes on each side have slip-fit joints for easier installation. |
| Oil Filter Compatibility |
Use of Trans-Dapt 1122 oil filter relocation kit recommended with these headers |
| Package Contents |
Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware |
| Port Shape |
Round |
| Power Steering |
Yes |
| Primary Tube Diameter (in) |
1.625 in. |
| Primary Tube Gauge |
16g |
| Quantity |
Sold as a pair. |
| Reducer Outlet Size |
2-1/2 in. |
| Reducers Included |
Yes |
| Replacement Gasket |
27500 |
| Replacement Head Flange Gasket |
27500 |
| Title |
HEDMAN HEDDERS ENGINE SWAP HEADERS; 1982-93 2WD S-10 / S15, 283-400 SB CHEVY; LONG TUBE- UNCOATED |
| Transmission Compatibility |
For use with TH350 transmission and 168 tooth flywheel. |
| Tube Design |
Standard |
| Tube Diameter |
1-5/8 in. |
| Tube Length |
Long Tubes |
| Tube Material Thickness |
16g |
| Tube Size |
1-5/8 in. |
| Tube Style |
Long Tubes |
| Tuned |
No |
| Variations |
69496 |
| Weld-Up |
No |
| with A.I.R. System |
No |
| with EGR |
No |
| Y-Pipe Included |
No |
| Length |
10.0000 |
| Width |
18.0000 |
| Height |
39.0000 |
| Weight |
30.0000 |
