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YSI Trim on a 555" BBC?
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Thread: YSI Trim on a 555" BBC?

  1. 02-07-2004, 02:33 AM #1
    Greg D
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    YSI Trim on a 555" BBC?

    Anyone out there know if a YSi Trim can supply 14 or more pounds of boost on a 555 CI BBC? I want to shift and go through the lights at about 7000-7200 RPM. Am I going to run into a impeller speed problem?
    Thanks
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  2. 02-07-2004, 12:05 PM #2
    Spence
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    you should be fine,

    Vortech's Big Block carb kits come with a YSi now.

    We are building a 434sbc with a YSi and its cog'd for roughly 15psi at 7500. the YSi is good to 30psi, it should feed your 555 at that boost level.

    http://www.rhodescustomauto.com



    Spence

    8.96/160
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  3. 02-07-2004, 01:12 PM #3
    Greg D
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    Sweet looking motor! I am going to purchase a Vortech BBC carb'd kit. I do have a few questions for ya.

    Who sells the cog kit I saw on that sweet 434? Is it a 8MM?

    I noticed your using a bonnet on the carb of the 434 vice a box. Is there a advantage to one over the other?


    Thanks for the advice.
    Greg

    PS When you ran your 8.96, was it with a YS trim or a X trim blower?
    Last edited by Greg D; 09-11-2004 at 06:30 PM.
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  4. 02-10-2004, 10:24 AM #4
    HazMat
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    That appears to be a Vortech 8mmx50mm cog belt set up. I would recommend using a strut brace or a tower brace to help elliminate any flex. It may not be a problem at those low impellar speeds.
    Last edited by HazMat; 02-10-2004 at 05:14 PM.
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  5. 02-10-2004, 05:48 PM #5
    Spence
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    HazMat.
    yeah thats kinda in the works.........its a chevy nova and there isnt really anywhere to run a support strut to.

    The Blower and tensioner cog is Vortech, the crank is RCD and the tensioner plate is a custom one we had made to use the vortech stainless arbor. The stock SBC kit uses a spring loaded tensioner. here is a new updated pic as of yesterday, car is still being assembled.


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  6. 02-10-2004, 06:02 PM #6
    HazMat
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    Spence, It looks as good as it will probably run. Are you going to take this to any events
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