Doug Thorley Headers THY-323Y-C GM C10 Pickup 1967-1987
Doug Thorley Headers THY-323Y-C
Tri-Y Headers with Adapters
1967-87 Chevrolet C10 Truck / Suburban / K5 Blazer / GMC Jimmy
4.8L-6.2L LS Motor Swap
Application Specifics: Manual transmission requires cable or hydraulic clutch linkage
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MADE IN THE USA
Doug Thorley Headers THY-323Y-C are designed to outflow your stock exhaust manifolds. These headers increase gas mileage and give your engine more horsepower across the entire RPM range.
Their design configuration builds the most power across the rpm range, which is great for everything from street/strip performance, to towing, to steep grades. To make these headers last, Thorley made 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, nickel chrome plated 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: THY-323Y-C
Header Style: 4:2:1 Tri-Y Headers
Material: Steel
Finish: Silver Ceramic Coated
Weld Up: No
Primary Tube Diameter: 1-7/8"
Primary Tube Gauge: 14 Gauge
Collector Attachment: 3-Bolt Flange
Collector Diameter: 2-1/2"
Tuned: No
Flange Thickness: 3/8"
Hardware Included: Yes
Gaskets Included: Yes
Reducers Included: Yes
Y-Pipe (Crossover) Included: No
Catalytic Converter(s) Included: No
CARB E.O. #: Pending approval
WARRANTY:
Doug Thorley Headers carry a lifetime warranty against defects in material and workmanship to the original purchaser. Chrome plated items carry no warranty for finish, other than to be free from defects at the time of purchase, prior to installation. This warranty does not cover damage caused by misuse, abuse, collisions, improper installation, alterations, off-road use, racing use, commercial use, "burn-out" or cracking caused by excessive heat, superchargers, or external heat insulating wrap. Rust or corrosion that occurs after the product is installed is also not covered.
year make model | 1967-87 Chevrolet C10 Truck / Suburban / K5 Blazer / GMC Jimmy |
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Manufacturer | DOUG THORLEY HEADERS |