496vs555 bbc
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496vs555 bbc

  1. #1
    Senior Member hotbo's Avatar
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    Default 496vs555 bbc

    oaky fellas we are thinking of building a 555 ci mill for our tx-19

    we have a 496 set-up with roughly 700hp.

    here is my main questions.

    1. we have brodix bb2-plus sts cnc fully ported heads.
    will these be sufficient enough for the 555 mill?

    i have already talked to chris about a new cam profile

    it will re-use the brodix intake and the 1050 dominator carb as well.

    what kinda hp gains are we looking at by doing this??

    is it gonna be worth the money?

    any tips or advice will be due noted,thanks travis

    p.s i would like to make as much hp as possible in the lower rpm range 6000-6300rpm range.

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    mo balls than $cents$ IMPATIENT 1's Avatar
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    not worth the effort unless you guys plan on building more compression than you have been. my lil 505 4.25 put it on kevins scott shairoff pro built 4.25 stroke 555 last summer , after i got that pump hooking up, he never wanted to race again we were sprayin the same amount, so you can't use that arguement

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    Senior Member H20MOFO's Avatar
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    I have a set of bb2plus heads on a 557, when I asked(how much to small the heads were), answers ranged from they will be fine to 5400 r's to 6300 r's.
    Needless to say I will be all ears on this one.
    Another Hot Boat refugee

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    Senior Member hotbo's Avatar
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    Quote Originally Posted by IMPATIENT 1 View Post
    not worth the effort unless you guys plan on building more compression than you have been. my lil 505 4.25 put it on kevins scott shairoff pro built 4.25 stroke 555 last summer , after i got that pump hooking up, he never wanted to race again we were sprayin the same amount, so you can't use that arguement

    kevins mill was fine,his boat was the problem

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    Senior Member hotbo's Avatar
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    Quote Originally Posted by H20MOFO View Post
    I have a set of bb2plus heads on a 557, when I asked(how much to small the heads were), answers ranged from they will be fine to 5400 r's to 6300 r's.
    Needless to say I will be all ears on this one.

    are yours the cnc ported heads like ours?

    i have heard around 6300 myself

    this will be a pump gas mill like the 496 is.

    no race fuel for the ole man

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    Quote Originally Posted by hotbo View Post
    kevins mill was fine,his boat was the problem
    he wasn't the only 1 that day 540's ,a 598bbc, couple blown 555's, and the lil 4.25 stroked on by em. stay with what you guys have and just spray the damn thing

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    Senior Member hotbo's Avatar
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    Quote Originally Posted by IMPATIENT 1 View Post
    he wasn't the only 1 that day 540's ,a 598bbc, couple blown 555's, and the lil 4.25 stroked on by em. stay with what you guys have and just spray the damn thing
    tom we are scared toit is a 2 bolt main.he is making around 700 then spray 200 plus on that,im thinking some shits goona come loose,am i wrong

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    mo balls than $cents$ IMPATIENT 1's Avatar
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    betta yet, talk your pops into dropping compression and let's stick a hairdyer or 2 on it, we'll get mark to fab up some headers

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    Quote Originally Posted by hotbo View Post
    tom we are scared toit is a 2 bolt main.he is making around 700 then spray 200 plus on that,im thinking some shits goona come loose,am i wrong
    dude, you seriously can't be scared after all i sprayed last summer on a 13 to 1 2bolt with a 450hp shot throw in some new main studs, line hone it and let er eat

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    mo balls than $cents$ IMPATIENT 1's Avatar
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    have ole bill watch this and tell him 1400hp on pump gas would be a breeeeeze with that same shortblock



    10 to 1 you could prob make 10-12lbs of boost on pump gas goin thru a good air to water intercooler.

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    Senior Member hotbo's Avatar
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    Quote Originally Posted by IMPATIENT 1 View Post
    have ole bill watch this and tell him 1400hp on pump gas would be a breeeeeze with that same shortblock



    10 to 1 you could prob make 10-12lbs of boost on pump gas goin thru a good air to water intercooler.
    im sorry tom,but niether one of us want any of that alien looking shit hanging off our mills.

    we are just living in the past i guess

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    Quote Originally Posted by hotbo View Post
    im sorry tom,but niether one of us want any of that alien looking shit hanging off our mills.

    we are just living in the past i guess
    lol, they'll never get close nuff to see any of it it was a big change for billy to go from that injected blown 540 all big/bad looking and shitt but he's a believer now.

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    Senior Member H20MOFO's Avatar
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    Quote Originally Posted by hotbo View Post
    are yours the cnc ported heads like ours?

    i have heard around 6300 myself

    this will be a pump gas mill like the 496 is.

    no race fuel for the ole man
    No, mine are not cnc'd. Good luck on the build ...keep us posted.
    Another Hot Boat refugee

  16. #14
    Senior Member hotbo's Avatar
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    Quote Originally Posted by H20MOFO View Post
    No, mine are not cnc'd. Good luck on the build ...keep us posted.
    well we are starting to get mixed feelings over this build.

    just how much more power could we make is the question

    100 plus more hp,we would do it,50-60 not worth the money???

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