Quote:
Originally Posted by Red SS
Hey D,
Sorry that this is completely off the topic at hand but I know you frequent this thread to help and I wanted to ask your opinion on a question. Would you reccommend 1 3/4" headers or 1 7/8" for a L99 that will be tuned, a u/d pulley, cai, and headers? My thoughts are 1 3/4 but I've been hearing a lot of guys say go with 1 7/8. Thanks for your time.
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I know a great deal about cylinder heads and over all induction system design and tuning but I dont know everything. I must rely on those who have done the research and development in certain areas just as you do. In order for me to quantify the power potential of different header designs I would have to have an engine on the dyno, buy many sets of headers and evaluate each one at great cost to myself and my company. What I am trying to say is this. Go ask the guys who know. There are many professional tuners that have evaluated different header tube sizes, lengths and designs. I went with the 1 7/8 because that is what was recommended to me by guys who have done the testing. I went with the 1 7/8 American Racing long tubes with high flow CATs and X pipe and some loud Mouth IIs because thats what the guys at New Era and the guys at American Racing told me would work best.