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post #1 of 4 (permalink) Old 03-22-2012, 06:09 PM Thread Starter
 
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Help header question!!!

I recently bought an 04 m6 it has a corsa catback and a k&n cia. I am wanting to get kooks headers and catless mid pipes wondering if i should get 1 3/4 or 1 7/8?? dont know which would be best would like to to heads and a cam in the near future. One other question i have is should i do a fast intake and tb before i do heads and cam?? Any thoughts would help

Thanks Zach
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post #2 of 4 (permalink) Old 03-23-2012, 03:11 PM
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Heads and cam first and 1 3/4" primaries

2004 Blk/Rd M6
6.3 litre LS1

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post #3 of 4 (permalink) Old 03-23-2012, 05:02 PM Thread Starter
 
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would you go with geting 243 heads and haqving them done or have my 241 heads done??
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post #4 of 4 (permalink) Old 03-23-2012, 07:43 PM
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241s CAN be done close to 243s but you have to spend big bucks. 243s with just a slight milling give 25-30 rwhp or so. Valve, bowl and port work can give even more.

2004 Blk/Rd M6
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