Doug's Headers DES104 Exhaust System 70-81 Camaro/Firebird LS Engine Swap
Designed for use with Doug's Headers LS Engine Swap Products
- 4.8L to 6.2L
- 3" 304 Stainless
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Doug's Headers DES104 Exhaust System 70-81 Camaro/Firebird LS Engine Swap
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Emissions Code
- Highlights
- Additional Information
- Applications
- Download Instruction Manual
Highlights
Doug's Headers LS Engine Swap products work together to ensure a proper fit for the LS Engine into specific applications. We understand that engine swap projects often take place over time and careful consideration goes into choosing the right products to suit a range of budgets. That's why we're offering our LS engine swap products a la carte so you can buy product as your build requires with the flexibility to build your project your way.
Additional Information
- Mandrel bent 304 stainless for maximum air flow and long lasting durability
- Compatible with Doug's LS Swap Headers
- Complete with all brackets and hardware for a true bolt-on installation
- Doug's stainless muffler and H-pipe design for a true muscle car sound
- Tucks up tight with the Doug's Transmission Crossmember for maximum ground clearance
Applications
Doug's LS Engine Swap products are sold separately but designed to work together. The complete line of LS Engine Swap products includes for this application includes:
Doug's Headers SK104 Motor Mounts 70-74 GM F Body 4.8-6.2L LS Engine Swap Mild Steel, Black
Doug's Headers SK105 Motor Mounts 75-81 GM F Body 4.8-6.2L LS Engine Swap Mild Steel, Black
Doug's Headers SKC104 Transmission Crossmember 70-81 GM F Body 4.8-6.2L LS Engine Swap Mild Steel, Black
Doug's Headers D3352 Long Tube Header 70-74 GM F Body 4.8-6.2L LS Engine Swap 1 7/8" Primary 3" Collector Silver Ceramic Coated
Doug's Headers D3352-B Long Tube Header 70-74 GM F Body 4.8-6.2L LS Engine Swap 1 7/8" Primary 3" Collector Black Hi Temp Coated
Doug's Headers D3351 Long Tube Header 75-81 GM F Body 4.8-6.2L LS Engine Swap 1 7/8" Primary 3" Collector Silver Ceramic Coated
Doug's Headers D3351-B Long Tube Header 75-81 GM F Body 4.8-6.2L LS Engine Swap 1 7/8" Primary 3" Collector Hi Temp Black Coating
Doug's Headers D3358 Mid Length Header 70-81 GM F Body 4.8-6.2L LS Engine Swap 1 7/8" Primary 3" Collector Silver Ceramic Coated
Doug's Headers DMP104 Exhaust Mid Pipe 70-74 GM F Body 4.8-6.2L LS Engine Swap use with D3358 Header 3" 304 Stainless
Doug's Headers DMP105 Exhaust Mid Pipe 75-81 GM F Body 4.8-6.2L LS Engine Swap use with D3358 Header 3" 304 Stainless
Doug's Headers DES104 Exhaust System 70-74 GM F Body 4.8-6.2L LS Engine Swap 3" 304 Stainless
Doug's Headers DES105 Exhaust System 75-81 GM F Body LS Engine Swap
Doug's Headers SKOP100 LS Engine Swap Oil Pan
Download Instruction Manual
EMISSIONS PLACARD
PerTronix Performance Ignition and Exhaust Brands use a voluntary product identification program whereby all emission sensitive products can be identified by placing numbered labels in product packaging and listing corresponding numeric codes next to each part number. The corresponding numbers and explanations are as follows:
PERTRONIX PERFORMANCE BRANDS EMISSIONS CODES
This product has been granted a California Air Resources Board (CARB) Executive Order (EO Number) Exemption. It is 50 State Legal when installed on the Specified vehicle per the Manufacturer’s Current Application Guide, the CARB EO, and Installation Instructions.

PERTRONIX PERFORMANCE BRANDS EMISSIONS CODES
This product is Legal for use on Pre-PoIIution Controlled Vehicles. It is legal for use on all
vehicles produced Before Emissions Control Regulations were imposed. These are considered
Uncontrolled Vehicles and are defined as follows;
1965 and Older US Manufactured California Certified Vehicles
1967 and Older US Manufactured Federally Certified Vehicles
1967 and Older Foreign Manufactured Vehicles

PERTRONIX PERFORMANCE BRANDS EMISSIONS CODES
This Product is LEGAL for Closed Course Competition use or Pre-Emissions Controlled Vehicles ONLY. It is Not Legal for use on any Emissions Controlled Vehicle for Street or Off Highway use.

PERTRONIX PERFORMANCE BRANDS EMISSIONS CODES
This Product is considered а Replacement Part per CARB and EPA regulations for emissions compliance and is legal for sale and use on specified vehicles in all 50 states as stated in Manufactured's Application Guide and lnstallation Instructions.

PERTRONIX PERFORMANCE BRANDS EMISSIONS CODES
This Product is legal for Street or Off Highway use in 49 States. This product meets the EPA Anti Tampering Policy for Reasonable Basis that allows the stated vehicle to operate within the legal emissions standards in states that do not require а California EO. This product in Not Legal for Street or Off Highway use in California.

PERTRONIX PERFORMANCE BRANDS EMISSIONS CODES
This Product is Certified by the Manufacturer as being а Non-Emissions Related part per CARB and
EPA regulations and therefore does not require emissions certification or CARB EO and is legal in
all 50 states.