Hedman Standard Duty HTC Coated Full-Length Headers 1967-91 GM C/K/R/V Series Truck/SUV 283-400
500-66091
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| Price |
| Brand |
GM Trucks
Specifications:
Application
Automotive
Bolts/Studs Included
Yes
CARB EO Number
D-167-26 (pdf)
Catalytic Converter(s) Included
No
Collector Attachment
Ball and socket flange
Cross Over Pipe Included
No
Cylinder Head Port Shape
Oval
Flange Style
Standard
Gaskets Included
Yes
Header Finish
Silver ceramic coated
Header Material
Steel
Header Style
Full-length
Motor Mounts Included
No
Primary Tube Gauge
18-gauge
Quantity
Sold as a pair
Reducers Included
Yes
Transmission Mount Included
No
Tube Direction
Down Swept
Tuned
No
Weld-Up
No
Collector Diameter
3 in (76.2 mm)
Primary Tube Diameter
1.625 in (41.3 mm)
Manufacturer's Part Number:
66091
Shipping Weight:
33
Package Height:
39
Package Depth:
10
Package Width:
19
Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing long and MID-LENGTH tube headers for Pontiac models 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 vehicle's exhaust system to bolt up, even if it is not perfectly aligned with the header collectors. These headers have a high temperature POLISHED-SILVER ceramic finish that resists corrosion, and can withstand temperatures up to 1400 degree F. Each set includes a pair of header 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. Made in the USA Features: NOTE: Installing coated headers on an engine during the break-in period will cause discoloration. The use of factory manifolds or an old set of headers is recommended while breaking in an engine.
Does Hedman 66091 fit your vehicle?
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1967 GMC K15/K1500 PICKUP
- Liter: 3.8
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Air Conditioning: Yes; 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: (103) Will fit with angle plug heads (Chevy aluminum only, L98).; Footnotes: (121) Must modify rotary A/C bracket.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; 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
- CUI: 230
- Engine Type: L6 ( 3.8L / 230 )
- Engine Vin: -
1970 GMC C15/C1500 SUBURBAN
- Liter: 5
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Air Conditioning: 1970 or later large piston A/C compressors require Hedman A/C Bracket 20110; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: 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: (103) Will fit with angle plug heads (Chevy aluminum only, L98).; Footnotes: (121) Must modify rotary A/C bracket.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; 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
- CUI: 307
- Engine Type: V8 ( 5L / 307 )
- Engine Vin: A
1982 GMC K1500 SUBURBAN
- Liter: 5
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Air Conditioning: 1970 or later large piston A/C compressors require Hedman A/C Bracket 20110; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: 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: (103) Will fit with angle plug heads (Chevy aluminum only, L98).; Footnotes: (121) Must modify rotary A/C bracket.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; E.O. Number: D167-27; Emissions Notes: 50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-27
- CUI: 305
- Engine Type: V8 ( 5L / 305 )
- Engine Vin: H
1981 GMC C2500 SUBURBAN
- Liter: 4.8
- SubModel: SIERRA GRANDE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Air Conditioning: 1970 or later large piston A/C compressors require Hedman A/C Bracket 20110; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: 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: (103) Will fit with angle plug heads (Chevy aluminum only, L98).; Footnotes: (121) Must modify rotary A/C bracket.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; 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
- CUI: 292
- Engine Type: L6 ( 4.8L / 292 )
- Engine Vin: T
1973 CHEVROLET C20 SUBURBAN
- Liter: 4.1
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Air Conditioning: 1970 or later large piston A/C compressors require Hedman A/C Bracket 20110; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: 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: (103) Will fit with angle plug heads (Chevy aluminum only, L98).; Footnotes: (121) Must modify rotary A/C bracket.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; 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
- CUI: 250
- Engine Type: L6 ( 4.1L / 250 )
- Engine Vin: Q
1970 CHEVROLET C20 PICKUP
- Liter: 4.8
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Air Conditioning: 1970 or later large piston A/C compressors require Hedman A/C Bracket 20110; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: 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: (103) Will fit with angle plug heads (Chevy aluminum only, L98).; Footnotes: (121) Must modify rotary A/C bracket.; Footnotes: (160) Early chassis only.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; 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
- CUI: 292
- Engine Type: L6 ( 4.8L / 292 )
- Engine Vin: -
1972 CHEVROLET BLAZER
- Liter: 4.8
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Air Conditioning: 1970 or later large piston A/C compressors require Hedman A/C Bracket 20110; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: 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: (103) Will fit with angle plug heads (Chevy aluminum only, L98).; Footnotes: (121) Must modify rotary A/C bracket.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; 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
- CUI: 292
- Engine Type: L6 ( 4.8L / 292 )
- Engine Vin: S
1987 GMC R3500
- Liter: 4.8
- SubModel: HIGH SIERRA
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Air Conditioning: 1970 or later large piston A/C compressors require Hedman A/C Bracket 20110; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: 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: (160) Early chassis only.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (103) Will fit with angle plug heads (Chevy aluminum only, L98).; Footnotes: (121) Must modify rotary A/C bracket.; E.O. Number: D167-33; Emissions Notes: 50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
- CUI: 292
- Engine Type: L6 ( 4.8L / 292 )
- Engine Vin: T
1985 GMC C2500 SUBURBAN
- Liter: 5.7
- SubModel: SIERRA CLASSIC
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Air Conditioning: 1970 or later large piston A/C compressors require Hedman A/C 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: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (103) Will fit with angle plug heads (Chevy aluminum only, L98).; Footnotes: (121) Must modify rotary A/C bracket.; E.O. Number: D167-33; Emissions Notes: 50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
- CUI: 350
- Engine Type: V8 ( 5.7L / 350 )
- Engine Vin: L
1968 GMC C35/C3500 PICKUP
- Liter: 5
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Air Conditioning: 1970 or later large piston A/C compressors require Hedman A/C Bracket 20110; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: 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: (160) Early chassis only.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (103) Will fit with angle plug heads (Chevy aluminum only, L98).; Footnotes: (121) Must modify rotary A/C bracket.; E.O. Number: D167-33; Emissions Notes: 50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
- CUI: 305
- Engine Type: V6 ( 5L / 305 )
- Engine Vin: -
1968 GMC K25/K2500 SUBURBAN
- Liter: 5.3
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Air Conditioning: 1970 or later large piston A/C compressors require Hedman A/C Bracket 20110; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: 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: (103) Will fit with angle plug heads (Chevy aluminum only, L98).; Footnotes: (121) Must modify rotary A/C bracket.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; 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
- CUI: 327
- Engine Type: V8 ( 5.3L / 327 )
- Engine Vin: -
1971 CHEVROLET C30 PICKUP
- Liter: 5.7
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Air Conditioning: 1970 or later large piston A/C compressors require Hedman A/C Bracket 20110; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: 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: (103) Will fit with angle plug heads (Chevy aluminum only, L98).; Footnotes: (121) Must modify rotary A/C bracket.; Footnotes: (160) Early chassis only.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; 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
- CUI: 350
- Engine Type: V8 ( 5.7L / 350 )
- Engine Vin: A
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