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how much HP would I lose by using 1 5/8" headers as opposed to 1 3/4"

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how much HP would I lose by using 1 5/8\" headers as opposed to 1 3/4\"
Old January 6th, 2004, 10:53 PM   #1
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how much HP would I lose by using 1 5/8\" headers as opposed to 1 3/4\"
With T&D's , no cats , and all the normal mods when combined with the ROE charger? I am wondering if it is worth the extra cash for new 1 3/4" long tube headers ? (this is not my motor, but it is SWEET!!)
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Re: how much HP would I lose by using 1 5/8\" headers as opposed to 1 3/4\"
Old January 6th, 2004, 10:55 PM   #2
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Re: how much HP would I lose by using 1 5/8\" headers as opposed to 1 3/4\"
My motor now!
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Re: how much HP would I lose by using 1 5/8\" headers as opposed to 1 3/4\"
Old January 6th, 2004, 11:38 PM   #3
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Re: how much HP would I lose by using 1 5/8\" headers as opposed to 1 3/4\"
On the average 15 to 25hp up top. Personally not worth the money. If you are already running some of the better designed headers out there probably less.
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Re: how much HP would I lose by using 1 5/8\" headers as opposed to 1 3/4\"
Old January 7th, 2004, 09:29 AM   #4
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Re: how much HP would I lose by using 1 5/8\" headers as opposed to 1 3/4\"
Sean has suggested that whatever the gain without the supercharger, that gain will be enhanced when you add the SC. Figure about 20 to 25% more with the SC.
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