Hedman Hedders Authorized Dealer

STANDARD SILVER EO HEADERS, 1967-91 GM 2WD/4WD TRUCKS, SUVS; 396-502 WITH A.I.R.

Name: STANDARD SILVER EO HEADERS, 1967-91 GM 2WD/4WD TRUCKS, SUVS; 396-502 WITH A.I.R.
Brand: Hedman Hedders
SKU: 107347140

Part Number 66111 (107347140)

Unavailable

Select vehicle for guaranteed fit

Description

Standard 50-State Headers; 67-91 CHEVY/GMC 3/4-1 Ton 2WD, 1/2-3/4 Ton 4WD Truck, Blazer, 1/2-3/4 Ton 2WD SUV or 3/4 Ton 4WD SUV; 396-502 BB Chevy with A.I.R. (Centered Engine); 1-3/4 in. Tubes; 3 in. Ball Collector- Silver-Coated Mild Steel

Hedman Hedders, began as a one man shop in 1954. Bob Hedman, founder of Hedman Hedders, sold his highly sought after exhaust tubes to fellow racers on the salt flats of the Mojave Desert. But, what started out as a way to make a few bucks to pay for Bob's racing hobby, quickly turned into the premier header manufacturer for both the racing and street header marketplaces.\n\nOriginally designed for straightline drag racers, word spread quickly about Hedman's reputation for building headers that gave you the best boost in power for your dollar. It wasn't long before Hedman Hedders was the brand of choice among racing's elite engine builders, racers and race series. Familiar names like Don Garlits, Warren Johnson, Shirley Muldowney, Bob Chandler and his BIG FOOT Race Team, and the IROC series.\n\nHedman Hedders constantly reshapes itself to meet environmental requirements and incorporates computer technology to ensure that its products offer the best performance improvement.\n\nWhether you're a Pro or sportsman racer, Hedman Hedders builds your headers with one goal in mind, optimum performance. Even if you're not a racer, the lessons Hedman learns at the track and on the dyno, make it into every street header we design.

Fitment

This part fits the following vehicles.

1968-1969, 1973-1974 Chevrolet C20 Pickup
1968-1969, 1973-1974 Chevrolet C20 Suburban
1968-1969, 1973-1974 Chevrolet C30 Pickup
1968-1969, 1973-1974 Chevrolet K10 Pickup
1968-1969, 1973-1974 Chevrolet K20 Pickup
1968-1969, 1973-1974 Chevrolet K20 Suburban
1968-1969, 1973-1974 GMC C25/C2500 Pickup
1968-1969, 1973-1974 GMC C25/C2500 Suburban
1968-1969, 1973-1974 GMC C35/C3500 Pickup
1968-1969, 1973-1974 GMC K15/K1500 Pickup
1968-1969, 1973-1974 GMC K25/K2500 Pickup
1968-1969, 1973-1974 GMC K25/K2500 Suburban
1976 GMC Jimmy

Features & benefits

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!
Handcrafted, Mild Steel Construction.
Long Tube Header Design Provides Excellent Top-End Horsepower and Torque.

Specifications

<i>COATED HEADERS DURING ENGINE BREAK-IN PERIOD</i>	<I><B><div style="background-color:red;color:white;padding:1%;">CLICK FOR IMPORTANT INFO REGARDING HEADER COATINGS DURING ENGINE BREAK-IN!</div></I></b>
Air Conditioning	Yes
Automatic Transmission - Column	Yes
Automatic Transmission - Floor	Yes
Bolts/Studs Included	Yes
Catalytic Converter(s) Included	No
Chassis Compatibility	NOT For Vehicles With Offset (right) Engine Position!
Clutch Notes	Must use 1975 and later model clutch linkage located at rear of engine. (139)
Collector Attachment	3 in.
Collector Bolts Included	Yes
Collector Diameter	3 in.
Collector Size	3 in.
Collector Style	BALL and SOCKET Style (Gasketless)
Contents	headers, gaskets (when applicable), 3-bolt exhaust adapters, hardware
Country Of Origin	US
Crossover Pipe Included	No
Cylinder Head	Stock Profile Heads
Cylinder Head Port Shape	Round
Drivetrain	2WD
E.O. #	Yes
Emissions Notes	EO# D167-33 (click here for covered vehicles in document on ARB.CA.GOV website)
Exhaust System Dia	2-1/2 in.
Finish	HTC Polished Silver Ceramic-Metallic
Finish Type	HTC SILVER (polished) Ceramic-metallic Coating
Flange Style	Standard
Flange Thickness	0.3125 in.
Gasket Or Seal Included	Yes
Header Construction	MILD STEEL- Standard-Duty
Header Fasteners Included	Yes
Header Finish	HTC Polished Silver Ceramic-Metallic
Header Material	Mild Steel
Header Port Shape	Round Port
Header Style	Long Tube
Installation Hardware Included	Yes
Key Feature	With A.I.R.
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Material	Mild Steel
Motor Mounts Included	No
Mounting Hardware Included	Yes
Package Contents	Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware
Port Shape	Round
Power Steering	Yes
Primary Tube Diameter (in)	1.75 in.
Primary Tube Gauge	16g
Quantity	Sold as a pair.
Reducer Outlet Size	2-1/2 in.
Reducers Included	Yes
Replacement Gasket	27530
Replacement Head Flange Gasket	27530
Street Legal	Yes
Tube Design	Standard
Tube Diameter	1-3/4 in.
Tube Length	Long Tubes
Tube Material Thickness	16g
Tube Size	1-3/4 in.
Tube Style	Long Tubes
Tuned	No
Variations	69111, 69821
Weld-Up	No
With A.I.R. System	Yes
With EGR	No
Y-Pipe Included	No

Videos and guides

Technical Bulletin PDF Buyers Guide PDF Installation Instructions PDF Brochure PDF

Magnuson-Moss Warranty Act

Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)).