Long Tube Headers




V8 Roadsters LSx Long tube headers


3/8 thick flanges

1-¾” primaries  with 3″  merge collector

Designed to work with V8 Roadsters LSx NA/B conversions

O2 bungs are welded into the collectors

Headers use a slip style collector for improved ground clearance

Built by Kooks for V8 Roadsters


Dyno result have shown around 20hp gains on a stock LS6 over the typical 1.5″ dimpled shorter primaries. 

The steering shaft will need to be removed for installation and like most LTH, our headers install from the bottom. We recommend loosing the engine and lifting it to aid in installation. Some may choose to loosen the subframe and suspended it for additional clearance. Each car will be different depending on the routing of other items in the engine bay, installers working area, etc.

GM starter part number 88878289. The GTO and F-Body long style will not fit! Driver’s side is even with the subframe and the passengers side is a little lower. By routing them this way we where able to avoid notching the bell housing.


Optional ceramic coating add one week for delivery.

O2 extensions are specific to year and model wiring harness. Contact us for the correct extensions.




Additional information

Weight45 lbs
Dimensions13 × 20 × 32 in


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