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<p>Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing long and MID-LENGTH tube headers for Chevy passenger cars 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.</p><p>These uncoated, MID-LENGTH tube headers are one of the most versatile headers Hedman Hedders manufacturers. While we've seen them on rare builds, like a SB Chevy equipped Studebaker, these MID-LENGTH headers are actually cataloged to fit Small Block Chevy V8 powered, 1967-81 Chevy Camaros; 1964-1987 GM A-Body and G-Body vehicles (Buick Regal, Chevy Chevelle, El Camino, Monte Carlo, Olds Cutlass, Pontiac Grand Prix); '68-79 Chevy II and Nova. Heck, they even fit 1984-2004 Chevy AstroVans. The smooth 1-5/8 in tube design provides ample exhaust flow to let your 283-400 SB Chevy engine breathe easy, and improve horsepower and torque over stock manifolds.</p><p>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.</p><p>Each set includes a pair of gaskets, header flange bolts and collector bolts. No collector gasket is needed.</p><p>Hedman Hedders is so confident in the quality of its headers that these headers are factory backed by a Limited Lifetime Warranty.</p>
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.
This part fits the following vehicles.
| Air Conditioning | Dependent on Vehicle (refer to VEHICLE APPLICATION Footnotes) |
|---|---|
| Automatic Transmission - Column | Yes |
| Automatic Transmission - Floor | Yes |
| Bolts/Studs Included | Yes |
| Catalytic Converter(s) Included | No |
| 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 |
| E.O. # | No |
| Emissions Notes | Not Legal For Street Use on '75-Later Model Years! Legal for off-road use only. |
| Engine | Chevy SB 283-400 (Gen 1) 1958-86 |
| Exhaust System Dia | 2-1/2 in. |
| Finish | Uncoated |
| Finish Type | UNCOATED Mild Steel! Shipped with Temporary Paint. |
| 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 | Uncoated |
| Header Material | Mild Steel |
| Header Port Shape | Round Port |
| Header Style | Mid-Length Tube |
| IMPORTANT! | Automatic Transmission ONLY! |
| Installation Hardware Included | Yes |
| LS SWAP | NO |
| Manual Transmission - Column | No |
| Manual Transmission - Floor | No |
| Material | Mild Steel |
| Motor Mounts Included | No |
| Mounting Hardware Included | Yes |
| Notes | 67-81 F; 64-83 A, 82-88 G; 68-79 X; 71-94 B; 84-04 Astro 283-400 |
| Package Contents | Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware |
| Port Shape | Round |
| Power Steering | Yes |
| Primary Tube Diameter (in) | 1.625 in. |
| Primary Tube Gauge | 16g |
| Quantity | Sold as a pair. |
| Reducer Outlet Size | 2-1/2 in. |
| Reducers Included | Yes |
| Replacement Gasket | 27500 |
| Replacement Head Flange Gasket | 27500 |
| Street Legal | Yes - Except CA |
| Tube Design | Standard |
| Tube Diameter | 1-5/8 in. |
| Tube Length | Mid-Length Tubes |
| Tube Material Thickness | 16g |
| Tube Size | 1-5/8 in. |
| Tube Style | Mid-Length |
| Tuned | No |
| Variations | 68606, 68603, 68608 & 63608. 62600, 62606 & 62603 304 Stainless Steel. |
| Weld-Up | No |
| With A.I.R. System | No |
| With EGR | No |
| Y-Pipe Included | No |
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)).
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