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- Long-Tube EO Headers For '78-87 GM G-Body 283-400 No A.I.R.
- Air Conditioning: Yes Power Steering: Yes Auto Transmission - Column: Yes Auto Transmission - Floor: Yes Manual Transmission - Column: No Manual Transmission - Floor: Yes Footnotes: (1) Without smog injection or injection heads. Footnotes: (121) Must modify rotary A/C bracket. Footnotes: (6) Modification to stock exhaust required to retain catalytic converter. E.O. Number: D167-33 Emissions Notes: 50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33 Engine Family: SB Chevy 283-400 (Gen 1) Y-Pipe Included:No with EGR:No with A.I.R. System:No Package Contents:Set of Headers, mounting hardware and gaskets Installation Hardware Included:Yes Replacement Gasket:27500 Cylinder Head:Stock Profile Heads Quantity:Sold as a pair. Crossover Pipe Included:No Catalytic Converter(s) Included:No Collector Bolts Included:Yes Catalog Code:HED Weld-Up:No Tuned:No Mounting Hardware Included:Yes Cylinder Head Port Shape:Round Variations:68317, 66317, 63317, 67318 & 67313. Tube Material Thickness:18g Tube Diameter:1-1/2 in. Reducer Outlet Size:2-1/2 in. Power Steering:Yes Port Shape:Round Material:Mild Steel Manual Transmission - Floor:Yes Manual Transmission - Column:No Key Feature:50 State (No A.I.R.) Flange Style:Standard Finish:Uncoated Exhaust System Dia:2-1/2 in. Engine Notes:CHEVROLET ENGINES Only! Emissions Notes:EO# D167-33 (click here for covered vehicles in document on ARB.CA.GOV website) Collector Style:Ball and Socket Style (Gasketless) Collector Size:3 in. Automatic Transmission - Floor:Yes Automatic Transmission - Column:Yes Air Conditioning:Yes Reducers Included:Yes Header Style:Long Tube Gasket Or Seal Included:Yes Bolts/Studs Included:Yes Contents:Header(s), new bolts, gasket(s) to head, reducer(s) and hardware, instructions Title:HEDMAN HEDDERS STANDARD UNCOATED HEADERS; 1-1/2 IN. TUBE DIA.; 3 IN. COLL.; FULL LENGTH DESIGN Header Construction:Standard-Duty E.O. #:Yes Installation Notes :May be necessary to remove Z bars (SS Series). Must modify rotary A/C bracket. California Proposition 65:WARNING: Cancer. For more info visit www.P65Warnings.ca.gov Primary Tube Diameter (in):1.50 in. Notes :1978-87 G-Body; 78-83 Skylark; 78-87 Chevrolet passenger cars 283-400 No A.I.R. Engine:Chevy SB 283-400 (Gen 1) 1958-86 Collector Attachment:3 in. Collector Diameter:3 in. Flange Thickness:0.25 in. Primary Tube Gauge:18g Tube Design:LONG TUBES Tube Length:Long Tubes Tube Size:1-1/2 in. Tube Style:Long Tubes
- Standard Uncoated Headers; 1-1/2 in. Tube Dia.; 3 in. Coll.; FULL LENGTH Design
- Product Attributes:
- Quantity: Sold As A Pair.
- with A.I.R. System: No
- Cylinder Head: Stock Profile Heads
- Tuned: No
- Cylinder Head Port Shape: Round
- Header Style: Long Tube
- Manual Transmission - Column: No
- Flange Style: Standard
- Finish: Uncoated
- Collector Bolts Included: Yes
- Bolts/Studs Included: Yes
- Automatic Transmission - Floor: Yes
- with EGR: No
- Tube Material Thickness:
- 16g
- 18g
- Tube Diameter: 1-1/2 In.
- Automatic Transmission - Column: Yes
- Reducer Outlet Size: 2-1/2 In.
- Tube Size: 1-1/2 In.
- Port Shape: Round
- Tube Length: Long Tubes
- Manual Transmission - Floor: Yes
- Collector Diameter: 3 In.
- Tube Style: Long Tubes
- Variations: 68317, 66317, 63317, 67318 & 67313.
- Collector Size: 3 In.
- Header Finish: Uncoated
- Mounting Hardware Included: Yes
- Weld-Up: No
- Collector Attachment: 3 In.
- Header Fasteners Included: Yes
- Y-Pipe Included: No
- Installation Notes: May Be Necessary To Remove Z Bars (ss Series). Must Modify Rotary A/c Bracket.
- Finish Type:
- Uncoated Mild Steel
- Uncoated Mild Steel! Shipped With Temporary Paint.
- Notes: 1978-87 G-body; 78-83 Skylark; 78-87 Chevrolet Passenger Cars 283-400 No A.i.r.
- Primary Tube Diameter (in): 1.50 In.
- Crossover Pipe Included: No
- Header Construction:
- Mild Steel- Standard-duty
- Standard-duty
- Tube Design:
- Long Tubes
- Standard
- Material: Mild Steel
- Key Feature: 50 State (no A.i.r.)
- Power Steering: Yes
- E.O. #: Yes
- Engine Notes: Chevrolet Engines Only!
- Exhaust System Dia: 2-1/2 In.
- Flange Thickness:
- 0.25 In.
- 0.3125 In.
- Engine: Chevy Sb 283-400 (gen 1) 1958-86
- LS SWAP: No
- Air Conditioning: Yes
- Reducers Included: Yes
- Primary Tube Gauge:
- 16g
- 18g
- Header Material: Mild Steel
- Catalytic Converter(s) Included: No
- Replacement Gasket: 27500
- Collector Style: Ball And Socket Style (gasketless)
- Emissions Notes: Eo# D167-33 (click Here For Covered Vehicles In Document On Arb.ca.gov Website)
-
Features:
- 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!
Additional Fitment Information:
| Vehicle | Block | CC | Cylinder Head Type | Region | Fuel Type | Engine | Sub Model | Aspiration | CID |
|---|---|---|---|---|---|---|---|---|---|
| 1979 - Buick Skylark | V | - | OHV | United States | GAS | 8 Cyl 5.0L | Base | Naturally Aspirated | 305 |
- Long-Tube EO Headers For '78-87 GM G-Body 283-400 No A.I.R.
- Air Conditioning: Yes Power Steering: Yes Auto Transmission - Column: Yes Auto Transmission - Floor: Yes Manual Transmission - Column: No Manual Transmission - Floor: Yes Footnotes: (1) Without smog injection or injection heads. Footnotes: (121) Must modify rotary A/C bracket. Footnotes: (6) Modification to stock exhaust required to retain catalytic converter. E.O. Number: D167-33 Emissions Notes: 50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33 Engine Family: SB Chevy 283-400 (Gen 1)
- Standard Uncoated Headers; 1-1/2 in. Tube Dia.; 3 in. Coll.; FULL LENGTH Design
- Product Attributes:
- Quantity: Sold As A Pair.
- with A.I.R. System: No
- Cylinder Head: Stock Profile Heads
- Tuned: No
- Cylinder Head Port Shape: Round
- Header Style: Long Tube
- Manual Transmission - Column: No
- Flange Style: Standard
- Finish: Uncoated
- Collector Bolts Included: Yes
- Bolts/Studs Included: Yes
- Automatic Transmission - Floor: Yes
- with EGR: No
- Tube Material Thickness: 16g
- Tube Diameter: 1-1/2 In.
- Automatic Transmission - Column: Yes
- Reducer Outlet Size: 2-1/2 In.
- Tube Size: 1-1/2 In.
- Port Shape: Round
- Tube Length: Long Tubes
- Manual Transmission - Floor: Yes
- Collector Diameter: 3 In.
- Tube Style: Long Tubes
- Variations: 68317, 66317, 63317, 67318 & 67313.
- Collector Size: 3 In.
- Header Finish: Uncoated
- Mounting Hardware Included: Yes
- Weld-Up: No
- Collector Attachment: 3 In.
- Header Fasteners Included: Yes
- Y-Pipe Included: No
- Installation Notes: May Be Necessary To Remove Z Bars (ss Series). Must Modify Rotary A/c Bracket.
- Finish Type:
- Uncoated Mild Steel
- Uncoated Mild Steel! Shipped With Temporary Paint.
- Primary Tube Diameter (in): 1.50 In.
- Crossover Pipe Included: No
- Header Construction: Mild Steel- Standard-duty
- Tube Design: Standard
- Material: Mild Steel
- Key Feature: 50 State (no A.i.r.)
- Power Steering: Yes
- E.O. #: Yes
- Engine Notes: Chevrolet Engines Only!
- Exhaust System Dia: 2-1/2 In.
- Flange Thickness: 0.3125 In.
- Engine: Chevy Sb 283-400 (gen 1) 1958-86
- LS SWAP: No
- Air Conditioning: Yes
- Reducers Included: Yes
- Primary Tube Gauge: 16g
- Header Material: Mild Steel
- Catalytic Converter(s) Included: No
- Replacement Gasket: 27500
- Collector Style: Ball And Socket Style (gasketless)
- Emissions Notes: Eo# D167-33 (click Here For Covered Vehicles In Document On Arb.ca.gov Website)
-
Features:
- 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!
Additional Fitment Information:
| Vehicle | Block | CC | Cylinder Head Type | Region | Fuel Type | Engine | Sub Model | Aspiration | CID |
|---|---|---|---|---|---|---|---|---|---|
| 1979 - Buick Skylark | V | - | OHV | United States | GAS | 8 Cyl 5.7L | Base | Naturally Aspirated | 350 |
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