Hot Rodding has always been about taking two or more parts that were never designed to work together, and make them work together seamlessly. It is a never ending effort to shove as much horsepower and torque under the vehicle’s hood as possible. Today, Hot Rodding is as popular as ever, and with the huge selection of aftermarket performance parts, and a plentiful supply of new crate and rebuilt classic engines, Hot Rodders couldn’t be happier. But, while freedom of choice has Hot Rodders grinning from ear to ear, any project can come to a screeching halt when it comes to bolting a set of headers up and lowering the engine into its final location. Our line of HOT RODZTM Hedders addresses the special needs of Hot Rodders by manufacturing a wide selection of hedders designed specifically for NON-FACTORY Engine and vehicle model combinations. These pages contain all Hedmans hedders that were built specifically for the way your vehicle DIDN’T come from the factory.
  • Thermal Protection Up To 1300 Deg.
  • 5 Year Warranty On Coating
  • Will Not Chip Or Peel
  • More Durable Than Chrome
  • Will Not Blue Or Discolor
  • Easy To Clean
  • Better Heat Insulation
  • Guaranteed Against External Rust-Through
  • Best High Temp Coating On The Market Today
  • Made In USA

Application Summary:

1982-1993 Chevrolet S10 CID 283, 1982-1993 Chevrolet S10 CID 305, 1982-1993 Chevrolet S10 CID 327, 1982-1993 Chevrolet S10 CID 350, 1982-1993 Chevrolet S10 CID 400, 1983-1993 Chevrolet S10 Blazer CID 283, 1983-1993 Chevrolet S10 Blazer CID 305, 1983-1993 Chevrolet S10 Blazer CID 327, 1983-1993 Chevrolet S10 Blazer CID 350, 1983-1993 Chevrolet S10 Blazer CID 400, 1982-1990 GMC S15 CID 283, 1982-1990 GMC S15 CID 305, 1982-1990 GMC S15 CID 327, 1982-1990 GMC S15 CID 350, 1982-1990 GMC S15 CID 400, 1983-1991 GMC S15 Jimmy CID 283, 1983-1991 GMC S15 Jimmy CID 305, 1983-1991 GMC S15 Jimmy CID 327, 1983-1991 GMC S15 Jimmy CID 350, 1983-1991 GMC S15 Jimmy CID 400
Air Conditioning Yes
Application Automotive
Automatic Transmission - Column No
Automatic Transmission - Floor Yes
Bolts/Studs Included Yes
Catalytic Converter(s) Included NO
Coating/Finish Painted
Collector Attachment 3"
Collector Bolts Included Yes
Collector Size 3"
Collector Style Ball and Socket Style (Gasketless)
Collector Tube Size (in.) 3
Contents One pair of headers, head flange gaskets, collector flange gaskets (when applicable), 3-bolt exhaust adapters, mounting hardware
Country of Origin (Primary) US
Crossover Pipe Included NO
Cylinder Head Stock Angle Plug Heads (Chevy Aluminum Only)
Cylinder Head Port Shape Round
E.O. # No
Emissions Notes NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '73-later vehicles. They're legal for race vehicles only, and may never be used upon a highway or public road. In addition, they are not legal for sale or use in California.
Engine 283-400 SB Chevy (Gen1)
Engine Make/Size Chevy Small Block (262-400)
Engine Notes Will work with ANGLE PLUG heads (Chevy Aluminum only)
Exhaust System Dia 2-1/2"
Finish Uncoated
Finish Type Uncoated Mild steel
Flange Style Standard
FLANGE Thickness 0.25"
Gasket # 27500
Gasket Or Seal Included Yes
Harmonized Tariff Code (Schedule B) 8708925000
Hazardous Material Code N
Head Flange Gasket 27500
Header Construction Standard-Duty
Header Finish Uncoated
Header Material Mild Steel
Header Port Shape Round
Header Style Long Tube- Under Chassis Exit
Installation Hardware Included Yes
Installation Notes Requires the Use of Trans-Dapt #4689 Engine Swap motor mount kit. (Sold separately); The use of a DELCO-RAMEY #323-255 or Chevrolet #187655 starter may be required.
Life Cycle Status Code 2
Life Cycle Status Description Available To Order
Manual Transmission - Column No
Manual Transmission - Floor Yes
Material Mild Steel
Motor Mounts Included NO
Mounting Hardware Included Yes
MSDS Required Flag N
NAFTA Preference Criterion Code B
Notes Two tubes on each side have slip-fit joints for easier installation.
Oil Filter Compatibility For easier oil filter changes, we recommend the installation of a Trans-Dapt # 1122 oil filter relocation kit with these headers.
Package Contents One pair of headers, head flange gaskets, collector flange gaskets (when applicable), 3-bolt exhaust adapters, mounting hardware
Port Shape Round
Power Steering Yes
Primary Tube Diameter (in) 1.625"
Primary Tube Gauge 18g
Quantity Sold as a pair.
Reducer Outlet Size 2.50"
Reducers Included Yes
Transmission Compatibility For use with TH350 transmission and 168 tooth flywheel.
Transmission Mount Included NO
Tube Design LONG TUBES
Tube Diameter 1-5/8"
Tube Direction Down Swept
Tube Length LONG Tubes
Tube Material Thickness 18g
Tube Size 1-5/8"
Tube Style Long Tubes
Tuned NO
Variations 69496
Weld-Up No
with A.I.R. No
with A.I.R. System No
with EGR No
Y-Pipe Included No

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Hedman Hedders 69490 STD Uncoated Engine Swap Hedders - Full

  • Brand: Hedman
  • Product Number: 69490
  • $404.91