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 Firebird, GTO, Lemans, Grand Prix or Tempest exhaust system to bolt up, even if it is not perfectly aligned with the header collectors.
The LONG-TUBE design of these headers provides ample exhaust flow to let your 326-455 Pontiac engine breathe easy, and produce maximum horsepower and torque. These headers have a high temperature POLISHED-SILVER ceramic finish that resists corrosion, and can withstand temperatures up to 1400 degree F. This finish is covered by a 5 year factory warranty, in addition to Hedman's standard lifetime header warranty.
Each set includes a pair of header gaskets, header flange bolts and collector bolts. No collector gasket is needed. Due to the location of the oil filter on these vehicles, relocation of the oil filter may be required to provide header tube clearance. We recommend the use of a Trans-Dapt Performance Products' #1120 (cast aluminum), or Hamburger's Performance Products #3365 (billet aluminum) oil filter relocation kit. Hedman Hedders is so confident in the quality of its headers that these headers are factory backed by a Limited Lifetime Warranty.
1967 Pontiac Firebird CID 326, 1968-1970 Pontiac Firebird CID 350, 1972-1977 Pontiac Firebird CID 350, 1967-1970 Pontiac Firebird CID 400, 1975-1979 Pontiac Firebird CID 400, 1971-1976 Pontiac Firebird CID 455, 1977 Pontiac Firebird Base CID 350 Naturally Aspirated GAS, 1973 Pontiac Grand Am CID 350, 1974-1975 Pontiac Grand Am CID 400, 1974-1975 Pontiac Grand Am CID 455, 1972-1974 Pontiac Grand Prix CID 400, 1973 Pontiac Grand Prix CID 455, 1964-1966 Pontiac GTO CID 389, 1967-1973 Pontiac GTO CID 400, 1970-1973 Pontiac GTO CID 455, 1964-1967 Pontiac LeMans CID 326, 1972-1976 Pontiac LeMans CID 350, 1972 Pontiac LeMans CID 400, 1974-1977 Pontiac LeMans CID 400, 1972-1973 Pontiac LeMans CID 455, 1976 Pontiac LeMans CID 455, 1964-1967 Pontiac Tempest CID 326, 1968-1970 Pontiac Tempest CID 350, 1968-1970 Pontiac Tempest CID 400
Documents
Attributes
Cylinder Head: | Stock Profile Heads |
Header Finish: | HTC Polished Silver Ceramic-Metallic |
Header Port Shape: | Oval Port |
Installation Notes: | Modification to reverse lockout (back drive) mechanism may be required. |
Quantity: | Sold as a pair. |
Tube Material Thickness: | 16g |
Finish Type: | HTC SILVER (polished) Ceramic-metallic Coating |
Header Style: | Long Tube |
Port Shape: | Oval |
Replacement Gasket: | 27600 |
Collector Diameter: | 3 in. |
Collector Size: | 3 in. |
Contents: | headers, gaskets (when applicable), 3-bolt exhaust adapters, hardware |
Cylinder Head Port Shape: | Oval |
Flange Style: | Standard |
Header Material: | Mild Steel |
Notes: | 64-81 Various Pontiac Cars 326-455 |
Package Contents: | Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware |
Primary Tube Diameter (in): | 1.625 in. x 2 in. |
Primary Tube Gauge: | 16g |
Title: | HEDMAN HEDDERS HTC COATED HEADERS; 1-5/8-2 IN. TUBE DIA.; 3 IN. COLL.; FULL LENGTH DESIGN |
Variations: | 28140 |
Installation Notes: | Some heads may require drilling and tapping of end bolt holes. |
Header Construction: | MILD STEEL- Standard-Duty |
Reducer Outlet Size: | 2-1/2 in. |
Collector Attachment: | 3 in. |
FLANGE Thickness: | 0.3125 in. |
Exhaust System Dia: | 2-1/2 in. |
California Proposition 65: | WARNING: Cancer & Reproductive Harm. For more info visit www.P65Warnings.ca.gov |
Material: | Mild Steel |
Tube Diameter: | 1-5/8 in. x 2 in. |
Emissions Notes: | EO# D167-27 (click here for covered vehicles in document on ARB.CA.GOV website) |
Tube Size: | 1-5/8 in. x 2 in. |
Tube Design: | Standard |
Finish: | HTC Polished Silver Ceramic-Metallic |
Replacement Head Flange Gasket: | 27600 |
Package Information
Package Length:39.25 INPackage Width:18.25 INPackage Height:9.63 INWeight:26 LBOrderable Status:YesQuantity:1Package UOM:Smallest Pack (Consumer Level)Package Level GTIN:00732611281461Package Bar Code:732611281461Weight Variance:0.000000000Stacking Factor:0Inner Quantity:0
Extended Information
Country of Origin (Primary):USEmission Code:Legal USHarmonized Tariff Code (Schedule B):8708925000Life Cycle Status Code:Available to OrderLife Cycle Status Description:Available to OrderMSDS Required Flag:NoNAFTA Preference Criterion Code:Criteria BNational Popularity Code:Next 15% of Product Group Sales Value National Popularity Description:Next 15% of Product Group Sales ValueRefurbished Part:NoRemanufactured Part:NoWarranty Special:Limited Lifetime Warranty on Construction. Five Years on Factory Coating.Warranty Special UOM:Text Warranty Message
Hedman Hedders
American-made Hedman Hedders have been helping racers unleash more power since 1954! Every set of headers Hedman makes is mandrel-bent for a consistent internal diameter and maximum flow, then flame-tested against leaks. For easy installation, they have unique ball socket collector flanges, which give you up to 20° of connection flexibility in case your pipes don’t match up perfectly. Hedders come with all the gaskets and hardware you need, plus instructions. All of Hedman’s Street Hedders are warranted for life, while Husler Hedders for racing have a 3-year limited warranty. Hedman also makes mufflers, exhaust tips, tubing, and other exhaust parts to those same high standards of performance and quality.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 Bobs racing hobby, quickly turned into the premier header manufacturer for both the racing and street header marketplaces.
Originally designed for straightline drag racers, word spread quickly about Hedmans reputation for building headers that gave you the best boost in power for your dollar. It wasnt long before Hedman Hedders was the brand of choice among racings 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.
Hedman Hedders constantly reshapes itself to meet environmental requirements and incorporates computer technology to ensure that its products offer the best performance improvement.
Whether youre a Pro or sportsman racer, Hedman Hedders builds your headers with one goal in mind, optimum performance. Even if youre not a racer, the lessons Hedman learns at the track and on the dyno, make it into every street header we design.