1 34 primary 3 12 collector. 180 theory is that if you get the 4 primary tubes to a collector at 180 degree intervals then you make collector as efficient as possible.
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Ls 180 degree headers. Schoenfeld 180 1 small block chevy 180 degree headers made by schoenfeld for as low as 27995. Though the use of 180 degree headers is limited to a few mid engine low rpm cars or high budget builds with custom oil pans and bodywork you can still maximize your exhaust systems by properly engineering your exhaust manifold for your engine and application. Schoenfeld chevy 180 degree crossover headers are available to fit different chassis either offset or straight up models and include bolts and gaskets. Get performance quality and value for your circle track racer from schoenfeld chevy 180 degree crossover headers. In addition to the added power of the 180 headers theres that distinctive soundoh the sound. Lower right door exit.
Sb chevy racing headers come with bolts gaskets and collectors. So one collector needs 1 7 6 and 4. Special warning regarding schoenfeld painted headers only. Turn up your speakers and listen to the c5 and ls powered off road monster with 180 degree headers its amazing how different a set of headers can make a car sound. Take the ls1 firing order. And the other gets 8 2 5 and 3.