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Originally Posted by Black Baja
(Post 4227735)
It will not be a Dart 320 when Tommy is done with them but it will have the perfect port to fill 632ci @ 6500 rpm. He's going to use the 320 cause there is alot to work with and its a very beefy head. A lot heavier than most aluminum heads if your are concerned with weight.
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Originally Posted by GPM
(Post 4227761)
Just curious, after all of this porting to fill your 632, what are the chances of each runner flowing the same cfm ?
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Originally Posted by Black Baja
(Post 4227683)
Honestly, My little donzi is gonna go 100 if it kills me or not. I was going to do a blower but my personal goal was to go 100 N/a. When you get down to making power with a 632 you need valve lift. Bob and I have discussed this and he doesn't see an issue with it at all with the big lifters. Only thing I could see is that it's gonna be hard on the springs and I'm going to have to check spring pressure as a maintenance type of thing. It's not a big deal to me I have the tools and use to doing this sort of thing...
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Not to get off topic, but what are you running for a drive on that boat? Iirc it's the old lightning jacks Donzi? I think I saw Jesus once in that boat the way it was setup before...
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Originally Posted by lil red
(Post 4227775)
Not to get off topic, but what are you running for a drive on that boat? Iirc it's the old lightning jacks Donzi? I think I saw Jesus once in that boat the way it was setup before...
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Yeah it was faster with the tabs down around 3 so it actually stayed straight lol. Cool boat. I like the big inch stuff. My wallet just won't support it lol. Real cool stuff thanks for posting it .
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Originally Posted by GPM
(Post 4227761)
Just curious, after all of this porting to fill your 632, what are the chances of each runner flowing the same cfm ?
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Originally Posted by 14 apache
(Post 4227765)
And if a valve ever dropped take out one head your at someone's mercy. Id go with a nice CNC head not less than 351CC on the intake runner closer to 383CC Make a tone of power with a smaller cam. The HH383MC brodix made 960HP @6700rpm on a 598 10to1-CR.
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Originally Posted by Black Baja
(Post 4227786)
They don't flow the same b4 they get ported. Bolt a single plane intake on the heads and it gets worse.
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Originally Posted by GPM
(Post 4227812)
I know, you might want to look at some symetricals, the engine would run a little smoother accross the cylinders and make big HP.
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