Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing Headers for Chevy Corvettes 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 Small Block Chevy exhaust system to bolt up, even if it is not perfectly aligned with the header collectors.
These LONG-TUBE headers fit 1984-1991 Chevy Corvettes powered by a SB Chevy (Gen 1) engine. The smooth 1-5/8 in tube design provides ample exhaust flow to let your Vette'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 underhood 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.
1988 Chevrolet Corvette 35th Anniversary Edition CID 350 Naturally Aspirated GAS, 1984-1987 Chevrolet Corvette Base CID 350 Naturally Aspirated GAS, 1989-1990 Chevrolet Corvette Base CID 350 Naturally Aspirated GAS
Notes- Air Conditioning: Yes
- Power Steering: Yes
- Auto Transmission - Floor: Yes
- Auto Transmission - Column: No
- Manual Transmission - Column: No
- Manual Transmission - Floor: Yes
- Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.
- Footnotes: (203) Non-E.G.R. equipped
Documents
Attributes
Header Port Shape: | Round |
Port Shape: | Round |
Replacement Gasket: | 27500 |
Title: | HEDMAN HEDDERS STANDARD UNCOATED HEADERS; 1-5/8 IN. TUBE DIA.; 3 IN. COLL.; FULL LENGTH DESIGN |
Package Contents: | Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware |
Primary Tube Gauge: | 16g |
Cylinder Head: | Stock Profile Heads |
Finish Type: | Uncoated Mild steel |
Header Style: | Long Tube |
Quantity: | Sold as a pair. |
Tube Material Thickness: | 16g |
Collector Diameter: | 3 in. |
Collector Size: | 3 in. |
Contents: | Header(s), new bolts, gasket(s) to head, reducer(s) and hardware, instructions |
Cylinder Head Port Shape: | Round |
Flange Style: | Standard |
Header Finish: | Uncoated |
Header Material: | Mild Steel |
Key Feature: | Non-EGR |
Notes: | 84-91 Chevrolet Corvette 283-400 |
Variations: | 68446, 68448 |
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. |
Material: | Mild Steel |
California Proposition 65: | WARNING: Cancer. For more info visit www.P65Warnings.ca.gov |
Tube Diameter: | 1-5/8 in. |
Tube Size: | 1-5/8 in. |
Tube Design: | Standard |
Replacement Head Flange Gasket: | 27500 |
Finish: | Uncoated |
Package Information
Package Length:39 INPackage Width:16.5 INPackage Height:8.25 INWeight:18 LBOrderable Status:YesQuantity:1Package UOM:Smallest Pack (Consumer Level)Package Level GTIN:00732611684408Package Bar Code:732611684408Weight Variance:0.000000000Stacking Factor:0Inner Quantity:0
Extended Information
Country of Origin (Primary):USEmission Code:Not in CAHarmonized 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:Top 60% of Product Group Sales Value (Units x $, Hits, etc.)National Popularity Description:Top 60% of Product Group Sales Value (Units x $, Hits, etc.)Refurbished Part:NoRemanufactured Part:NoWarranty Special:Limited Lifetime WarrantyWarranty 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.