OK I have a 2004 gt w/ Vortec V-1 supercharger plus other mods 464 rwhp.I have stock exhaust manifolds and I was wondering if I would benefit from hearders.I heard they don't mix well due to the extra heated air created by the S/C.
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Thanks for the info. any sugestion on a good pair?I was looking into the edelbrock victor series but, they don't have o2 holes.I was told that a cheap pair will crack under extreme heat due to the forced air.
i gave up after all the talks with pro shops and peeps the conclusion is they wont last long without cracking as a dd and money versus time and gains isn't worth it basically not woth the hassle plus I was told near 500 rwhp on a stock 4.6 2v is pushing it already time to do some smarter hp gains that means cnc work