The original 180's ( bundle of snakes )as every one knows was on the famous G.T. 40. The routing of the exhaust was close together and straight out the back, this system created a large power range. The distinct sound is created by changing the exhaust pulse from 180 degrees to 90 degrees, this sound is similar to many race cars that incorporate a flat crankshaft where the crank journals are 90 degrees apart ( you can lay the crank on a table and it is on one flat plane), most notable is the Ferrari. The new Shelby mustang has a flat crank and many other unique features for it is a purpose built track car. A heat shield is recommended as the temperatures at the header tubes ( prior to collectors ) can reach 600+ degrees.
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