blower headers
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blower headers

  1. #1
    Member milpitasjet's Avatar
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    Default blower headers

    i bought a boat and a set of these came with it. heres the deal, they are a set of rewarder but they are 2 1/2 in pipes and they hit my head bolts. i looked them up and it said they were blower headers. my question is can you convert them to fit a 454? are these only for blower motors? would there be enough back presure? id love it if i could make these work. they are beefy. any info would be appreciated. thanks
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  3. #2
    21 Daytona Outlaw's Avatar
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    I can't see the pic on my phone but most headers need to be clearanced
    Around the head studs

    If its just the flange go for it



    Sent from my iPhone
    #55

  4. #3
    Senior Member rampgirlll's Avatar
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    Outlaw-tap on his post and it will open the attachment for ya.
    Wwwwwwwwwweeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eee

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  6. #4
    "Need For Speed" Gearhead's Avatar
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    Mil,

    As far as the headers fitting on your boat, as per Outlaw, it is not unusual for a set of virgin headers to have clearance issues between the bottom of the flanges and top of the head studs. Simply place the headers as close to their location on the engine, mark these areas, and then take a side grinder and grind clearance. Try not to grind anymore than you have too and be sure to stay out of the sealing ring on the engine side of the tubes.

    As far as performance, the larger tube is designed for larger engines or engines that need to pass a great deal of gasses like a blower motor. These headers on a smaller engine and/or a normally aspirated engine will not be as responsive as a smaller set of headers. The power curve will probably shift to a higher RPM range, etc.

    However, with this said, you can still run them. It won't damage the engine, just possibly make it slightly sluggish from the proper size counterparts.

  7. #5
    Member milpitasjet's Avatar
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    Gear head, thanks for the info, that's exactly what I needed to know. I'll probably stick with the regular headers. Not trying to have any power losses. It's just tempting because these headers are so chunky!
    Last edited by milpitasjet; 04-18-2012 at 08:16 AM.

  8. #6
    Ain't Right Racin piston in the wind's Avatar
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    U could get a set of raised exhaust port heads.Might run better

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