Doug Thorley Headers thy-323y-c 1-7/8" Exhaust Swap Header for GM Truck/SUV LS

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Doug Thorley Headers thy-323y-c 1-7/8" Exhaust Swap Features

• Made in the USA with limited lifetime warranty

• Extra thick 14GA tubing and 3/8 inch thick flanges

• Ceramic coated inside and out

• Kit includes all required gaskets and/or installation hardware

• CARB approved, 50 state smog legal

About Doug Thorley Headers Thy-323y-c 1-7/8" Exhaust Swap

Doug Thorley Headers THY-323Y-C long tube tri-y headers deliver the ultimate in performance and gas mileage for your 1967-1972 GM Pickup Truck / Suburban with 4.8L-6.2L LS motor. Doug Thorley Headers is the originator of the tri-y header design, which is the most efficient way to increase horsepower and torque over a broad RPM range, and more importantly the range where you use it most. That better exhaust flow produces noticable gains in horsepower and torque output, while increasing fuel efficiency. The headers are manufactured using heavy duty 14GA steel tubing, and super flat 3/8 inch head flanges. They are then silver ceramic coated inside and out, which looks great, drastically reduces under-hood temperatures, and creates a strong barrier to protect the headers from the environment. APPLICATION SPECIFICS: 1967-1972 GM Pickup Truck / Suburban, 4.8L-6.2L LS series motor swap, manual or automatic tranmission (manual transmission must have hydraulic clutch). 1-7/8 inch primary tubes, 2-1/2 inch collector outlet.