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1 7/8" Header pipes - Anyone ? 1 7/8" Header pipes - Anyone ?
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Old 09-05-2002, 07:16 AM
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Default 1 7/8" Header pipes - Anyone ?
Any opinions on 1 7/8" primaries vs. the 1 3/4" for a 450HP 351W ?
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Old 09-05-2002, 09:00 AM
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I would go with the 1 3/4. I am running 660 hp 358ci with 1 3/4 to 7/8 steps as per the cup builder so 1 3/4 should be fine for 450hp. scott
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Old 09-05-2002, 10:06 AM
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I agree with Scott. The larger pipes will hurt mid and low end performance (as well as mileage) more than they would help the top end. Don't make the mistake of going too large on the primaries like a lot of guys do.

Mike
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Old 09-06-2002, 06:18 AM
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Thanks for the comments !
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Old 09-06-2002, 06:44 AM
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One more vote for the 1 3/4".
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