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#41866117
Hedman Hedders 66117 68-91 GM Truck Headers, HTC
- HTC Coated Headers
- 1-3/4 In. Tube Dia.
- 3 In. Coll.
$631.99
/set
Factory Shipped
Quantity
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Product Summary
Long Tube Header Tube Type, Round Exhaust Port Shape
- HTC Coated Headers
- 1-3/4 In. Tube Dia.
- 3 In. Coll.
- Full Length Design
Key Specs
| MFG. Part # | 66117 |
| Header Tube Type | Long Tube |
| Exhaust Port Shape | Round |
| Flange Style | Standard |
| Primary Tube Diameter | 1-3/4" |
Need To Know
Made to Order
This custom item will ship when completed
Need help?
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Return PolicyHedman Hedders 66117 Details
Hedman Hedders 66117 Details
Hedman Hedders has been manufacturing quality headers in the USA since 1954, and classic musclecars is their specialty. 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 you to bolt up, even if it is not perfectly aligned with the header collectors.
Hedman Hedders is so confident in the quality of its headers that these headers are factory backed by a Limited Lifetime Warranty.
Features
- HTC Coated Headers
- 1-3/4 In. Tube Dia.
- 3 In. Coll.
- Full Length Design
Application
- 1968-1969 Chevrolet C10 Suburban Base 6.5 Liter Naturally Aspirated GAS
- 1970-1972 Chevrolet C10 Suburban Base 6.6 Liter Naturally Aspirated GAS
- 1973-1974 Chevrolet C10 Suburban Base 7.4 Liter Naturally Aspirated GAS
- 1968-1969 Chevrolet C10 Suburban Base CID 396 Naturally Aspirated GAS
- 1970-1972 Chevrolet C10 Suburban Base CID 402 Naturally Aspirated GAS
- 1973-1974 Chevrolet C10 Suburban Base CID 454 Naturally Aspirated GAS
- 1975-1980 Chevrolet C10 Suburban Custom Deluxe 7.4 Liter Naturally Aspirated GAS
- 1975-1980 Chevrolet C10 Suburban Custom Deluxe CID 454 Naturally Aspirated GAS
- 1975-1980 Chevrolet C20 Cheyenne CID 454 Naturally Aspirated GAS
- 1981-1986 Chevrolet C20 Custom CID 454 Naturally Aspirated GAS
- 1968-1969 Chevrolet C20 Pickup Base CID 396 Naturally Aspirated GAS
- 1973-1974 Chevrolet C20 Pickup Base CID 454 Naturally Aspirated GAS
- 1968-1969 Chevrolet C20 Suburban Base 6.5 Liter Naturally Aspirated GAS
- 1970-1972 Chevrolet C20 Suburban Base 6.6 Liter Naturally Aspirated GAS
- 1973-1974 Chevrolet C20 Suburban Base 7.4 Liter Naturally Aspirated GAS
- 1968-1969 Chevrolet C20 Suburban Base CID 396 Naturally Aspirated GAS
- 1970-1972 Chevrolet C20 Suburban Base CID 402 Naturally Aspirated GAS
- 1973-1974 Chevrolet C20 Suburban Base CID 454 Naturally Aspirated GAS
- 1981-1986 Chevrolet C20 Suburban Custom 7.4 Liter Naturally Aspirated GAS
- 1981-1986 Chevrolet C20 Suburban Custom CID 454 Naturally Aspirated GAS
- 1976-1980 Chevrolet C20 Suburban Custom Deluxe 6.6 Liter Naturally Aspirated GAS
- 1975-1980 Chevrolet C20 Suburban Custom Deluxe 7.4 Liter Naturally Aspirated GAS
- 1975-1980 Chevrolet C20 Suburban Custom Deluxe CID 454 Naturally Aspirated GAS
- 1975-1980 Chevrolet C30 Cheyenne CID 454 Naturally Aspirated GAS
- 1981-1986 Chevrolet C30 Custom CID 454 Naturally Aspirated GAS
- 1968-1969 Chevrolet C30 Pickup Base CID 396 Naturally Aspirated GAS ...See Application Guide for Additional Fitments
Specs
Manufacturer Specs:
TUBE DIAMETER| 1-3/4 in. | |
TUBE STYLE| Long Tubes | |
AIR CONDITIONING| Yes | |
AUTOMATIC TRANSMISSION - COLUMN| Yes | |
AUTOMATIC TRANSMISSION - FLOOR| Yes | |
MANUAL TRANSMISSION - COLUMN| No | |
MANUAL TRANSMISSION - FLOOR| Yes | |
POWER STEERING| Yes | |
COLLECTOR ATTACHMENT| 3 in. | |
COLLECTOR DIAMETER| 3 in. | |
COLLECTOR SIZE| 3 in. | |
COLLECTOR STYLE| BALL and SOCKET Style (Gasketless) | |
REDUCER OUTLET SIZE| 2-1/2 in. | |
EXHAUST SYSTEM DIA| 2-1/2 in. | |
CONTENTS| headers, gaskets (when applicable), 3-bolt exhaust adapters, hardware | |
FINISH| HTC Polished Silver Ceramic-Metallic | |
FINISH TYPE| HTC SILVER (polished) Ceramic-metallic Coating | |
FLANGE STYLE| Standard | |
FLANGE THICKNESS| 0.3125 in. | |
HEADER STYLE| Long Tube | |
MATERIAL| Mild Steel | |
TUBE DESIGN| Standard | |
TUBE LENGTH| Long Tubes | |
TUBE MATERIAL THICKNESS| 16g | |
TUBE SIZE| 1-3/4 in. | |
WITH AIR SYSTEM| No | |
WITH EGR| No | |
EO| Yes | |
EO #| EO# D167-33 | |
WELD-UP| No | |
TUNED| No | |
BOLTS/STUDS INCLUDED| Yes | |
CATALYTIC CONVERTERS INCLUDED| No | |
CROSSOVER PIPE INCLUDED| No | |
GASKET OR SEAL INCLUDED| Yes | |
HEADER FASTENERS INCLUDED| Yes | |
INSTALLATION HARDWARE INCLUDED| Yes | |
MOTOR MOUNTS INCLUDED| No | |
MOUNTING HARDWARE INCLUDED| Yes | |
REDUCERS INCLUDED| Yes | |
Y-PIPE INCLUDED| No | |
QUANTITY| Sold as a pair. | |
PRIMARY TUBE GAUGE| 16g | |
PRIMARY TUBE DIAMETER IN| 1.75 in. | |
PACKAGE CONTENTS| Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware | |
HEADER MATERIAL| Mild Steel | |
HEADER FINISH| HTC Polished Silver Ceramic-Metallic | |
CYLINDER HEAD PORT SHAPE| Round | |
CYLINDER HEAD| Stock Profile Heads | |
HEADER CONSTRUCTION| MILD STEEL- Standard-Duty | |
REPLACEMENT GASKET| 41827500 | |
REPLACEMENT HEAD FLANGE GASKET| 41827500 | |
HEADER PORT SHAPE| Round Port | |
PORT SHAPE| Round | |
COLLECTOR BOLTS INCLUDED| Yes | |
MATERIALS| NOT For Vehicles With Offset (right) Engine Position! | |
SUSPENSION NOTES| Must use 1975 and later model clutch linkage located at rear of engine. (139) | |
Guides & Documents
Hedman Hedders 66117 Specifications
Hedman Hedders 66117 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 66117 |
| Brand | Hedman Hedders |
| Header Tube Type | Long Tube |
| Exhaust Port Shape | Round |
| Flange Style | Standard |
| Primary Tube Diameter | 1-3/4" |
| Material Type | Mild Steel |
| Color | Silver |
| Weld-Up | No |
| Collector Diameter | 3 Inch |
| Finish | Polished |
| Hardware Included | Yes |
| Gasket(s) Included | Yes |
| Collector Reducers Included | Yes |
| Collector Reducer Exit Diameter | 2.5" |
| CARB EO# | D-167-33|
| GENERAL | |
| Sold in Quantity | Set |
| Collector Length | 3" |
| Flange Thickness | 0.3125" |
| Tuned | No |
| Crossover Pipe Included | No |
| Primary Tube Gauge | 16-gauge |
| CARB EO Number | EO# D167-33 |
Ratings & Reviews
Ratings & Reviews
Questions & Answers
Questions & Answers
Be the first to ask a question.
Fitment
Fitment
1965-1969 Chevy Bel Air
396 Chevy Big Block V8
1970-1972 Chevy Bel Air
402 Chevy Big Block V8
454 Chevy Big Block V8
1973-1975 Chevy Bel Air
454 Chevy Big Block V8
1965-1969 Chevy Biscayne
396 Chevy Big Block V8
1970-1972 Chevy Biscayne
402 Chevy Big Block V8
454 Chevy Big Block V8
1969 Chevy Brookwood
396 Chevy Big Block V8
1970-1972 Chevy Brookwood
402 Chevy Big Block V8
454 Chevy Big Block V8
1969 Chevy C10
396 Chevy Big Block V8
1970-1972 Chevy C10
402 Chevy Big Block V8
1973-1979 Chevy C10
454 Chevy Big Block V8
1968-1969 Chevy C10 Suburban
396 Chevy Big Block V8
1970-1972 Chevy C10 Suburban
402 Chevy Big Block V8
1973-1979 Chevy C10 Suburban
454 Chevy Big Block V8
1988 Chevy C15
454 Chevy Big Block V8
1990 Chevy C1500
454 Chevy Big Block V8
1991 Chevy C1500
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Mark IV 454 LS5
1992-1993 Chevy C1500
454 Chevy Big Block V8
1968-1969 Chevy C20
396 Chevy Big Block V8
1970-1972 Chevy C20
402 Chevy Big Block V8
1973-1987 Chevy C20
454 Chevy Big Block V8
1968-1969 Chevy C20 Suburban
396 Chevy Big Block V8
1970-1972 Chevy C20 Suburban
402 Chevy Big Block V8
1973-1986 Chevy C20 Suburban
454 Chevy Big Block V8
1991 Chevy C2500
Chevy Big Block V8 Mark IV 454 L19
Chevy Big Block V8 Gen 5 454 L19
1992-1995 Chevy C2500
454 Chevy Big Block V8
1996-1997 Chevy C2500
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Gen 6 ZZ454 454
1992-1995 Chevy C2500 Suburban
454 Chevy Big Block V8
1996-1997 Chevy C2500 Suburban
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Gen 6 ZZ454 454
1968-1969 Chevy C30
396 Chevy Big Block V8
1970-1972 Chevy C30
402 Chevy Big Block V8
1973-1986 Chevy C30
454 Chevy Big Block V8
1988-1990 Chevy C3500
454 Chevy Big Block V8
1991 Chevy C3500
Chevy Big Block V8 Mark IV 454 L19
Chevy Big Block V8 Gen 5 454 L19
1992-1995 Chevy C3500
454 Chevy Big Block V8
1996-1997 Chevy C3500
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Gen 6 ZZ454 454
1967 Chevy Camaro
Chevy Big Block V8 Mark IV 396 L35
Chevy Big Block V8 Mark IV 396 L78
1968-1969 Chevy Camaro
Chevy Big Block V8 Mark IV 396 L34
Chevy Big Block V8 Mark IV 396 L35
Chevy Big Block V8 Mark IV 396 L78
1970-1972 Chevy Camaro
402 Chevy Big Block V8
1966-1969 Chevy Caprice
396 Chevy Big Block V8
1970-1972 Chevy Caprice
402 Chevy Big Block V8
454 Chevy Big Block V8
1973-1976 Chevy Caprice
454 Chevy Big Block V8
1965-1969 Chevy Chevelle
396 Chevy Big Block V8
1970-1972 Chevy Chevelle
402 Chevy Big Block V8
454 Chevy Big Block V8
1973 Chevy Chevelle
454 Chevy Big Block V8
1968 Chevy Chevy II
396 Chevy Big Block V8
1965 Chevy Corvette
396 Chevy Big Block V8
1970-1974 Chevy Corvette
454 Chevy Big Block V8
1966-1969 Chevy El Camino
396 Chevy Big Block V8
1970-1972 Chevy El Camino
402 Chevy Big Block V8
454 Chevy Big Block V8
1973-1975 Chevy El Camino
454 Chevy Big Block V8
1969 Chevy Estate
396 Chevy Big Block V8
1970 Chevy Estate
402 Chevy Big Block V8
454 Chevy Big Block V8
1996-2000 Chevy Express 2500
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Gen 6 ZZ454 454
1996-2000 Chevy Express 3500
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Gen 6 ZZ454 454
1988-1990 Chevy G30
454 Chevy Big Block V8
1991 Chevy G30
Chevy Big Block V8 Mark IV 454 L19
Chevy Big Block V8 Gen 5 454 L19
1992-1995 Chevy G30
454 Chevy Big Block V8
1996 Chevy G30
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Gen 6 ZZ454 454
1965-1969 Chevy Impala
396 Chevy Big Block V8
1970-1972 Chevy Impala
402 Chevy Big Block V8
454 Chevy Big Block V8
1973-1976 Chevy Impala
454 Chevy Big Block V8
1969 Chevy K10
396 Chevy Big Block V8
1970-1972 Chevy K10
402 Chevy Big Block V8
1973-1974 Chevy K10
454 Chevy Big Block V8
1968-1969 Chevy K10 Suburban
396 Chevy Big Block V8
1970-1972 Chevy K10 Suburban
402 Chevy Big Block V8
1973-1974 Chevy K10 Suburban
454 Chevy Big Block V8
1968-1969 Chevy K20
396 Chevy Big Block V8
1970-1972 Chevy K20
402 Chevy Big Block V8
1973-1974 Chevy K20
454 Chevy Big Block V8
1968-1969 Chevy K20 Suburban
396 Chevy Big Block V8
1970-1972 Chevy K20 Suburban
402 Chevy Big Block V8
1973-1974 Chevy K20 Suburban
454 Chevy Big Block V8
1985 Chevy K20 Suburban
454 Chevy Big Block V8
1991 Chevy K2500
Chevy Big Block V8 Mark IV 454 L19
Chevy Big Block V8 Gen 5 454 L19
1992-1995 Chevy K2500
454 Chevy Big Block V8
1996-1997 Chevy K2500
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Gen 6 ZZ454 454
1992-1995 Chevy K2500 Suburban
454 Chevy Big Block V8
1996-1997 Chevy K2500 Suburban
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Gen 6 ZZ454 454
1968-1969 Chevy K30
396 Chevy Big Block V8
1970-1972 Chevy K30
402 Chevy Big Block V8
1977-1986 Chevy K30
454 Chevy Big Block V8
1988-1990 Chevy K3500
454 Chevy Big Block V8
1991 Chevy K3500
Chevy Big Block V8 Mark IV 454 L19
Chevy Big Block V8 Gen 5 454 L19
1992-1995 Chevy K3500
454 Chevy Big Block V8
1996-1997 Chevy K3500
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Gen 6 ZZ454 454
1969 Chevy Kingswood
396 Chevy Big Block V8
1970-1972 Chevy Kingswood
402 Chevy Big Block V8
454 Chevy Big Block V8
1973-1975 Chevy Laguna
454 Chevy Big Block V8
1965-1967 Chevy Malibu
396 Chevy Big Block V8
1973-1975 Chevy Malibu
454 Chevy Big Block V8
1970-1972 Chevy Monte Carlo
402 Chevy Big Block V8
454 Chevy Big Block V8
1973-1975 Chevy Monte Carlo
454 Chevy Big Block V8
1969 Chevy Nova
396 Chevy Big Block V8
1970 Chevy Nova
402 Chevy Big Block V8
1975-1990 Chevy P30
454 Chevy Big Block V8
1991 Chevy P30
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Mark IV 454 LS5
1992-1995 Chevy P30
454 Chevy Big Block V8
1996-1997 Chevy P30
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Gen 6 ZZ454 454
1972 Chevy P30 Van
402 Chevy Big Block V8
1973-1974 Chevy P30 Van
454 Chevy Big Block V8
1987-1988 Chevy R20
454 Chevy Big Block V8
1987-1988 Chevy R20 Suburban
454 Chevy Big Block V8
1989 Chevy R2500
454 Chevy Big Block V8
1989-1990 Chevy R2500 Suburban
454 Chevy Big Block V8
1991 Chevy R2500 Suburban
Chevy Big Block V8 Mark IV 454 L19
Chevy Big Block V8 Gen 5 454 L19
1987-1988 Chevy R30
454 Chevy Big Block V8
1989-1990 Chevy R3500
454 Chevy Big Block V8
1991 Chevy R3500
Chevy Big Block V8 Mark IV 454 L19
Chevy Big Block V8 Gen 5 454 L19
1969 Chevy Townsman
396 Chevy Big Block V8
1970-1972 Chevy Townsman
402 Chevy Big Block V8
454 Chevy Big Block V8
1987-1988 Chevy V20 Suburban
454 Chevy Big Block V8
1990 Chevy V2500 Suburban
454 Chevy Big Block V8
1987-1988 Chevy V30
454 Chevy Big Block V8
1989-1990 Chevy V3500
454 Chevy Big Block V8
1991 Chevy V3500
Chevy Big Block V8 Mark IV 454 L19
Chevy Big Block V8 Gen 5 454 L19
1975-1978 GMC C15
454 Chevy Big Block V8
1975-1978 GMC C15 Suburban
454 Chevy Big Block V8
1973-1974 GMC C15/C1500 Pickup
454 Chevy Big Block V8
1973-1974 GMC C15/C1500 Suburban
454 Chevy Big Block V8
1979 GMC C1500
454 Chevy Big Block V8
1979 GMC C1500 Suburban
454 Chevy Big Block V8
1975-1978 GMC C25
454 Chevy Big Block V8
1975-1978 GMC C25 Suburban
454 Chevy Big Block V8
1967-1970 GMC C25/C2500 Pickup
396 Chevy Big Block V8
1971-1972 GMC C25/C2500 Pickup
402 Chevy Big Block V8
1973-1974 GMC C25/C2500 Pickup
454 Chevy Big Block V8
1967-1970 GMC C25/C2500 Suburban
396 Chevy Big Block V8
1971-1972 GMC C25/C2500 Suburban
402 Chevy Big Block V8
1973-1974 GMC C25/C2500 Suburban
454 Chevy Big Block V8
1979-1986 GMC C2500
454 Chevy Big Block V8
1988-1990 GMC C2500
454 Chevy Big Block V8
1991 GMC C2500
Chevy Big Block V8 Mark IV 454 L19
Chevy Big Block V8 Gen 5 454 L19
1992-1995 GMC C2500
454 Chevy Big Block V8
1996-2000 GMC C2500
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Gen 6 ZZ454 454
1979-1986 GMC C2500 Suburban
454 Chevy Big Block V8
1992-1995 GMC C2500 Suburban
454 Chevy Big Block V8
1996-1999 GMC C2500 Suburban
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Gen 6 ZZ454 454
1975-1978 GMC C35
454 Chevy Big Block V8
1967-1970 GMC C35/C3500 Pickup
396 Chevy Big Block V8
1971-1972 GMC C35/C3500 Pickup
402 Chevy Big Block V8
1979-1986 GMC C3500
454 Chevy Big Block V8
1988-1990 GMC C3500
454 Chevy Big Block V8
1991 GMC C3500
Chevy Big Block V8 Mark IV 454 L19
Chevy Big Block V8 Gen 5 454 L19
1992-1995 GMC C3500
454 Chevy Big Block V8
1996-2000 GMC C3500
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Gen 6 ZZ454 454
1967-1970 GMC K25/K2500 Pickup
396 Chevy Big Block V8
1971-1972 GMC K25/K2500 Pickup
402 Chevy Big Block V8
1967-1970 GMC K25/K2500 Suburban
396 Chevy Big Block V8
1971-1972 GMC K25/K2500 Suburban
402 Chevy Big Block V8
1994-1999 GMC K2500 Suburban
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Gen 6 ZZ454 454
1977-1978 GMC K35
454 Chevy Big Block V8
1967-1970 GMC K35/K3500 Pickup
396 Chevy Big Block V8
1971-1972 GMC K35/K3500 Pickup
402 Chevy Big Block V8
1979-1986 GMC K3500
454 Chevy Big Block V8
1988-1990 GMC K3500
454 Chevy Big Block V8
1991 GMC K3500
Chevy Big Block V8 Mark IV 454 L19
Chevy Big Block V8 Gen 5 454 L19
1992-1995 GMC K3500
454 Chevy Big Block V8
1996-2000 GMC K3500
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Gen 6 ZZ454 454
1987-1989 GMC R2500
454 Chevy Big Block V8
1987-1990 GMC R2500 Suburban
454 Chevy Big Block V8
1991 GMC R2500 Suburban
Chevy Big Block V8 Mark IV 454 L19
Chevy Big Block V8 Gen 5 454 L19
1987-1990 GMC R3500
454 Chevy Big Block V8
1991 GMC R3500
Chevy Big Block V8 Mark IV 454 L19
Chevy Big Block V8 Gen 5 454 L19
1996-2000 GMC Savana 2500
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Gen 6 ZZ454 454
1996-2000 GMC Savana 3500
Chevy Big Block V8 Gen 5 454 L19
Chevy Big Block V8 Gen 6 ZZ454 454
1971-1972 GMC Sprint
402 Chevy Big Block V8
454 Chevy Big Block V8
1973-1977 GMC Sprint
454 Chevy Big Block V8
1967 GMC Suburban
396 Chevy Big Block V8
402 Chevy Big Block V8