Thread: Why headers don't increase power on v6 engines
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Old Aug 5, 2014 | 02:13 PM
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boostmonkey
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Default Re: Why headers don't increase power on v6 engines
Originally Posted by sk8erjosh09
Where did you get the 1.75" primary/port info.
I measured it. The OEM primary tubes are 1.75" OD or the nearest metric size. I would expect the ports to be slightly smaller and incorporate an inversion dam.
 
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