| Crossover Pipe Included | NO |
| Automatic Transmission - Floor | Yes |
| Header Port Shape | Round |
| Variations | 68310, 68316, 68313, 68318 & 63318. |
| motor mounts included | NO |
| Cylinder Head | Stock Profile Heads |
| Engine Notes | CHEVROLET ENGINES Only! |
| Tuned | NO |
| Finish Type | HTC SILVER (polished) Ceramic-metallic Coating |
| Y-Pipe Included | No |
| Engine | Chevy SB 283-400 (Gen 1) 1958-86 |
| Tube Diameter | 1-1/2 in. |
| Reducer Outlet Size | 2-1/2 in. |
| header style | Long Tube |
| Primary Tube Diameter (in) | 1.50 in. |
| Installation Hardware Included | Yes |
| Gasket Or Seal Included | Yes |
| Transmission Mount/Crossmember (Included) | No |
| Flange Thickness | 0.3125 In. |
| Installation Notes | Must modify rotary A/C bracket. |
| Header Material | Mild Steel |
| Contents | headers, gaskets (when applicable), 3-bolt exhaust adapters, hardware |
| Weld-Up | No |
| California Proposition 65 | WARNING: Cancer & Reproductive Harm. For more info visit www.P65Warnings.ca.gov |
| Manual Transmission - Floor | Yes |
| Automatic Transmission - Column | Yes |
| Motor Mounts (Included) | NO |
| Catalytic Converter(s) Included | No |
| Emissions Notes | NOT LEGAL FOR STREET USE ON '75-LATER MODEL YEARS! Legal for off-road use only. |
| with EGR | No |
| Gasket # | 27500 |
| Header Finish | HTC Polished Silver Ceramic-Metallic |
| <i>COATED HEADERS DURING ENGINE BREAK-IN PERIOD</i> | CLICK FOR IMPORTANT INFO REGARDING HEADER COATINGS DURING ENGINE BREAK-IN! |
| Cylinder Head Port Shape | Round |
| Power Steering | Yes |
| Exhaust System Dia | 2-1/2 in. |
| with A.I.R. System | No |
| Package Contents | Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware |
| Port Shape | Round |
| Tube Size | 1-1/2 in. |
| Tube Length | LONG Tubes |
| Finish | HTC Polished Silver Ceramic-Metallic |
| Replacement Gasket | 27500 |
| Primary Tube Gauge | 16g |
| Notes | 78-87 G-Body ;78-83 Skylark 283-400 |
| Tube Style | Long Tubes |
| Header Construction | MILD STEEL- Standard-Duty |
| reducers included | Yes |
| KEY FEATURE | Without A.I.R. |
| E.O. # | No |
| Tube Design | Standard |
| Collector Style | Ball and Socket Style (Gasketless) |
| Manual Transmission - Column | No |
| Collector Bolts Included | Yes |
| Header Fasteners Included | Yes |
| Quantity | Sold as a pair. |
| Title | HEDMAN HEDDERS HTC COATED HEADERS; 1-1/2 IN. TUBE DIA.; 3 IN. COLL.; FULL LENGTH DESIGN |
| Tube Material Thickness | 16g |
| Mounting Hardware Included | Yes |
| LS SWAP | NO |
| Material | Mild Steel |
| Replacement Head Flange Gasket | 27500 |
| Air Conditioning | Yes |
| Collector Attachment | 3 in. |
| Flange Style | Standard |
| Collector Diameter | 3 in. |
| Collector Size | 3 in. |
| Part Terminology | Exhaust Header |
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 passenger cars for decades. 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 LONG-TUBE headers fit a variety of 1978-1987 GM A-Body and G-Body vehicles, including Buick Regal, Chevy Chevelle, El Camino, Monte Carlo, and Pontiac Grand Prix models fitted with a SB Chevy (Gen 1) engine. The smooth 1-1/2 in. tube design provides ample exhaust flow to let your 283-400 SB Chevy engine breathe easy, and produce maximum horsepower and torque.
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. 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.
