Ford Mustang Forum - View Single Post - Who has straight runs on exhaust
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post #8 of (permalink) Old 09-06-2013 Thread Starter
LandToSea
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Joined: May 2010
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Quote:
Originally Posted by Kerrdogg View Post
Not sure what engine angle has to do with it unless there is a common firing order the 60 degree v6's all have. I will say from messing with many a Buick the 6 cylinder has some strange noise attributes or harmonics that are hard to tame. Theres a reason whe they are called, "A Buzzing half dozen". Try calling Borla, does there system stay small or does it expand as it goes out? If I were building a NA car I would be running Borla or Kooks headers, an X pipe and 2.5" exhaust out the back, this is just based on things I have seen and experimented with over the years and may not be the best.

Example a buddy with a 89 5.0 and I had similar builds, the only real difference was he stayed 2.25" going into his mufflers where I went 2.5", my car was 1 mph faster, we swapped exhaust and his car picked up the mph and he went 12's for the first time, not talking 800 hp cars here, talking 275hp.

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John - I believe that is it, 60į = even alternating firing 1-4-2-5-3-6? I can go with the 2.5" as there was no reason not to do so except better clearances/easier to work with.
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