Tri-Y LS-Swap Headers Are Available At Doug Thorley Headers

For more than 60 years, Doug Thorley Headers has been an innovator in the automotive aftermarket. The company is driven by a passion for performance headers and delivering superior quality exhaust systems. Plus, it is committed to developing 100-percent American-made products that reliably deliver maximum horsepower and torque. Doug Thorley Headers has been pushing the limits of automotive technology since they first invented the Tri-Y header in 1958.

LS swap header

Why straddle your LS swap by running the factory exhaust manifolds or drag a set of long-tube headers on the ground with your LS swap? This 3/4-length header for 1964-67 Chevelle is designed to give you the maximum in performance while being short enough to not smack the ground like long-tube headers are known. The shorter design also makes installation easier than long tubes. They’re made from 14-gauge tubing with 3/8-inch flanges and come ceramic coated to look great and reduce under-hood temperatures.

Since every vehicle model is unique, the R&D team is constantly working to provide a diverse range of products and applications to meet customers’ needs. Whether you’re hauling an RV or building a hot rod, Doug Thorley Headers has the best performance headers to maximize horsepower and torque for your application.

LS swap header

Tri-Y (or 4 into 2 into 1) headers will increase the power of your engine across the widest RPM-band possible. That is the beauty of the design, and that is why they are the best street header available. PN: THY-359Y-C is designed for 1978-88 G-body cars with either a 4.8- or 6.2-liter LS swap.

The latest news we received talked about a couple of products we felt many of you would have an interest in — LS-swap headers to increase your car or truck’s performance. For starters, how about headers designed to fit multiple years of Chevy trucks, 1964-67 Chevelle, Tri-Five Chevys, 1978-88 G-bodies, and 1961-64 Impala.

LS-swap headers

Part number THY-330Y-C is perfect for that LS swap into a 1947-54 3100 Chevy pickup.

There is no arguing that headers are a great way to boost engine performance, and when you have a set of Doug Thorley Headers, you have a set of pipes to surpass your goals.

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About the author

Randy Bolig

Randy Bolig has been working on cars and has been involved in the hobby ever since he bought his first car when he was only 14 years old. His passion for performance got him noticed by many locals, and he began helping them modify their vehicles.
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