Details
Doug Thorley headers are designed to outflow your stock exhaust manifolds. These headers increase gas mileage and give your engine more horsepower across the entire RPM range, which is great for everything from street/strip performance, to towing, to steep grades. To make these headers last, Doug Thorley makes them out of durable 14-gauge mild steel with 3/8 in. thick flanges and 5/16 in. collector rings and topped them off with a good looking, silver ceramic finish. To prevent leaks, these headers have an O-ring welded into the flange, in addition to the high-temperature gasket provided.
Unless otherwise noted, these headers are designed to fit the vehicle as it came from the manufacturer. This includes components like cylinder heads, chassis, steering, motor mounts, body mounts and bushings, etc.
If your vehicle is using aftermarket components, parts from other applications, or custom altered parts, then it is the installer's responsibility to verify fitment.
Brand: Doug Thorley Headers
Manufacturer's Part Number: 313-C
Part Type: Headers
Product Line: Doug Thorley Headers
Header Style: 4-1 one-piece
Header Material: Steel
Header Finish: Silver Ceramic Coated
Primary Tube Diameter (in): 1 3/4 in.
Collector Attachment: 3-bolt flange
Collector Diameter: 3.000 in.
Tuned: No
Primary Tube Gauge: 14-gauge
Flange Style: Standard
Flange Thickness (in): 3/8 in.
Bolts/Studs Included: Yes
Gaskets Included: Yes
Reducers Included: No
Y-Pipe Included: No
Motor Mounts Included: No
Transmission Mount Included: No
Quantity: SOLD AS A PAIR.
Drivetrain RWD
Power Steering Yes
Power Brakes Yes
Air Conditioning Yes
Standard Transmission Column Shift No
Standard Transmission Floor Shift Yes
Automatic Transmission Column Shift Yes
Automatic Transmission Floor Shift Yes
Application Footnotes:
Not legal for sale or use in California on pollution-controlled motor vehicles.
Additional Information
| year make model | 1966-1974 Chevelle and El Camino 1967-1974 Camaro 1968-1974 Nova 1970-1975 Monte Carlo 1971-1974 GMC Sprint thy313c |
|---|---|
| Manufacturer | DOUG THORLEY HEADERS |
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