1979 GMC Jimmy Exhaust Header Parts
Choose your Submodel for your 1979 GMC Jimmy
- Long-Tube Headers For 67-91 GM 283-400 Trucks & SUVs
- Air Conditioning: Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110 Power Steering: Yes Auto Transmission - Column: Yes Auto Transmission - Floor: Yes Manual Transmission - Column: No Manual Transmission - Floor: Some vehicles may encounter clutch shaft interference when cross shaft location is under or behind the driver side rear exhaust port. Use 69092 without A.I.R. Use 69093 with A.I.R. Order Elite 69892. Footnotes: (1) Without smog injection or injection heads. Emissions Notes: RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
- Standard-Duty Uncoated, Long-Tube Headers For 1967-87 CHEVY/GMC 2WD & 4WD, 1/2 to 1 Ton Pick-Up, SUV or Motorhome with 283-400 SB Chevy Engine (Centered Engine Chassis Only); 1-5/8 in. Long Tubes; 3 in. Ball/Socket Collector
- Product Attributes:
- Header Port Shape: Round
- Quantity: Sold As A Pair.
- with A.I.R. System: No
- Cylinder Head: Fits Factory Gm Aluminum Angle Plug And Straight Plug Heads.
- Tuned: No
- Cylinder Head Port Shape: Round
- Header Style: Long Tube
- Manual Transmission - Column: No
- Finish: Uncoated
- Flange Style: Standard
- Collector Bolts Included: Yes
- Bolts/Studs Included: Yes
- Chassis Compatibility: Not For Vehicles With Offset (right) Engine Position!
- Automatic Transmission - Floor: Yes
- with EGR: No
- Tube Material Thickness: 16g
- Tube Diameter: 1-5/8 In.
- Automatic Transmission - Column: Yes
- Reducer Outlet Size: 2-1/2 In.
- Tube Size: 1-5/8 In.
- Port Shape: Round
- Tube Length: Long Tubes
- Manual Transmission - Floor: No
- Collector Diameter: 3 In.
- Tube Style: Long Tubes
- Variations: 69096, 69890
- 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
- Finish Type:
- Uncoated Mild Steel
- Uncoated Mild Steel! Shipped With Temporary Paint.
- Notes: 67-91 Gm. Full Size Blazer, Jimmy 283-400 2-4wd
- Motor Mounts Included: No
- Primary Tube Diameter (in): 1.625 In.
- Crossover Pipe Included: No
- Header Construction: Mild Steel- Standard-duty
- Replacement Head Flange Gasket: 27500
- Tube Design: Standard
- Material: Mild Steel
- Power Steering: Yes
- E.O. #: No
- Exhaust System Dia: 2-1/2 In.
- Flange Thickness: 0.3125 In.
- 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: Not Legal For Street Use On '75-later Model Years! Legal For Off-road Use Only.
- Transmission Compatibility: May Encounter Clutch Interference If Cross Shaft Behind Driver Side Rear Port
-
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!
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 trucks for nearly as long. 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 one of Hedman's best selling Chevy truck headers. They fit a wide range of early to mid-year 1967-1987 2WD & 4WD Chevy/GMC 1/2 Ton and 3/4 ton trucks, Blazers and Suburbans (check the application listings for exact fitment), powered by a Small Block Chevy engine (without A.I.R. System). The smooth 1-5/8 in. tube design provides ample exhaust flow to let your truck's 283-400 SB Chevy engine breathe easy, and produce maximum horsepower and torque. 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 under hood 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.
| Vehicle | Block | CC | Region | Engine | Engine Version | CID |
|---|---|---|---|---|---|---|
| 1979 - GMC Jimmy | V | - | United States | 8 Cyl 6.6L | Chevrolet | 400 |
- 1.5 in. Primary Tubing; w/3 in. Collector; Mild Steel; Ceramic Coated;Intended For Race Use Only May Require Clutch Linkage Modification~Does Not Fit w/Angle Plug Heads~Req. A/C Bracket PN[10042FLT]~w/Oxy. Sensor - Use Reducer PN[10110FLT] For 3 in. Flange~Must Modify Stock Exhaust To Retain Cat. Converter
- Ceramic Header; 1.5 in. Primary Tubing; w/3 in. Collector; Mild Steel; Ceramic Coated;
- Ceramic Header
- Product Attributes:
- Tube Diameter: 1.500 In.
- Primary Tube Diameter: 1.500 In.
- WARNING CA Proposition 65: Yes
- Application: Automotive
- Coated Finish: Metallic Ceramic
- Port Shape: Round
- Engine Make/Size: Chevy Small Block (262-400)
- Tube Direction: Down Swept
-
Features:
- Fuel Economy From The Engine
- Leak Test For Max Performance
- Ceramic Headers
- Rust And Corrosion Resistance
- Mandrel-Formed Power Plenum
- Leak-proof O-Ringed Port Seals
- Include All Mounting Hardware
- Flowtech headers are the perfect combination of performance and value. Flowtech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 5/16 in. flanges with sealing rings for a leak-free seal. All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat and corrosion resistant metallic ceramic thermal coating that increases exhaust velocity and reduces underhood temps for increased performance.
| Vehicle | Block | CC | Engine | Sub Model | CID |
|---|---|---|---|---|---|
| 1979 - GMC Jimmy | V | - | 8 Cyl 5.0L | Street Coupe | 305 |
- 1.5 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only May Require Clutch Linkage Modification~Does Not Fit w/Angle Plug Heads~Req. A/C Bracket PN[10042FLT]~w/Oxy. Sensor- Use Reducer PN[10105FLT] For 2.5 in Flange
- Long Tube Headers; 1.5 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;
- Long Tube Headers
- Product Attributes:
- Tube Diameter: 1.500 In.
- Primary Tube Diameter: 1.500 In.
- WARNING CA Proposition 65: Yes
- Application: Automotive
- Coated Finish: Painted
- Port Shape: Round
- Engine Make/Size: Chevy Small Block (262-400)
- Tube Direction: Down Swept
-
Features:
- Fuel Economy From The Engine
- Leak Test For Max Performance
- Mandrel-Formed Power Plenum
- Leak-proof O-Ringed Port Seals
- Include All Mounting Hardware
- Precision Engineered For Fit
- Flowtech headers are the perfect combination of performance and value. Flowtech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 5/16 in. flanges with sealing rings for a leak-free seal. All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat resistant black paint for a stealthy appearance.
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 1979 - GMC Jimmy | V | - | 8 Cyl 5.0L | 305 |
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