Dart 360's
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Dart 360's

  1. #1
    Senior Member kdub's Avatar
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    Default Dart 360's

    Got a set of Darts for a BBC that are currently 355cc runners. Is this head too big for a 496 cid 13:1 deal with a 250 hp n2o kit? Application is a jet boat, thanks

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    If the boat is going to be over 6500 rpm and WFO all the time they will work. YES
    If you are looking for mid range power with punch, NO.
    If this is a pleasure boat with the occasional WFO pass, NO

    To bandaid the cylinder head size you will need a very small camshaft.
    Chris Straub
    Straub Technologies

    3HP is an A$$ Whooping!!! JW

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    Senior Member kdub's Avatar
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    It is frequently at WFO! Are you saying a small cam as a bandaid for mid range suffering from the huge runners? The cam in it now is not huge, 262/270 @.050 ,714/714 @ valve, .020 lash, 109 LC with a 114 LSA. Factoring in the lash its below .700 lift now.

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    Senior Member TNYoungblood's Avatar
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    I started a thread a while back on Good vs. Bad on Dart heads .. It was a good read, might wont to look it up .. I tried to copy and paste but didn't have any luck

  7. #5
    steelcomp was here
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    Those heads are way too big for a 496 under almost any circumstances ...IMO.
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

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    WAY to big. Sell them to me.

  9. #7
    Senior Member kdub's Avatar
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    selling stuff to you almost always costs me money

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    Quote Originally Posted by kdub View Post
    selling stuff to you always costs me money
    fixed it

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    You already know my oppinion but Ill go ahead and state it here so someone can call me an idiot!! On motor they will be a little big and will need to wind the motor up to make good power but so be it cause it will still run better than what you got and when you turn the nitrous on it will pick up the slack, then when you get tired of you know who wearing your ass out and go ahead and step up to that 565 you will have the cylinder head you need.

  12. #10
    gn7
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    kdub, screw this. Build yourself a bad ass STRONG 565 now, throw on those heads, hit it with a 500HP shot and go whip some ass on the A hole now.


    Yes, the heads are big.



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  13. #11
    gn7
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    Quote Originally Posted by cstraub View Post
    To bandaid the cylinder head size you will need a very small camshaft.
    It would take more than a band aid. More like a full body cast. Chris, even if you go with a small camshaft, how do you ever get port velocity. Like putting 450 carbs on a Dart tunnel ram.



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  14. #12
    No Sandbar To Far sanger rat's Avatar
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    Stick a blower on top
    Quote Originally Posted by One More Year View Post
    The only blab's I will even be a part of is just when it is me they are talking about. Aaaah yes I can see a few good looking shiny tall deck motors on the beach, with barely enough fuel to get back to the launch saying, "Holy crap how fast you think that Daytona was going man? That's like the 20th time he's gone by today?"

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    Quote Originally Posted by sanger rat View Post
    Stick a blower on top
    exactly! Let's say we start with a 1250 and work from there.

  16. #14
    Senior Member kdub's Avatar
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    ok, i was planning on a 565 anyway but theres nothin like a test mule so i will get em in the shop, get em freshened up and stick em on the small motor just to see what will happen. Hell 2 more solenoids will wake em up anyway. Then when the 565 is done we can see the difference and I will know for sure. Thanks for the input fellas!!

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