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opinions needed. Best factory cast BBC intake.
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Big Dave
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PostPosted: Wed Mar 31, 2010 8:47 am    Post subject: Reply with quote

clay wrote:
Quote:
Well a buddy of mine says he can turn a oval port intake into a square port one with his mill...

That's sort of what I was thinking. Even if you couldn't get the intake port quite as large as the head port, it shouldn't be a problem - maybe even have some antireversion benefit. Dave - how about marine applications? I seem to remember from our dirt track days that the Chevrolet's were running a marine 4bbl. intake. Probably nothing different about it and it could have been all rumor though - you know how racers are..........Clay


Mercruiser made it (same folks that used to make the 8.2 liter BBC pick-up truck motor before Chevy pulled the plug on it) so it will be avialble as a replacement service part to replace a corroded piece.

As to hogging out the oval ports to rectangular port size I hope you have a lot of epoxy; as you will definitly be making your own custom ports where water jackets used to be.



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MufflerBearings69
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PostPosted: Wed Mar 31, 2010 2:56 pm    Post subject: Reply with quote

Id offer to keep my eyes open for ya but I know too little of BBC to know what I am looking at with them... I have been stumbling upon good deals for the last little while around here...

If ya come across a pic of said manifold would ya post it? A few of the local yards have some neat stuff hanging out and are reasonable with pricing...

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af2
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PostPosted: Wed Mar 31, 2010 3:52 pm    Post subject: Reply with quote

Dave,
He is talking about hogging the intake not the heads. lol

MB the gasket shown on Dave's post is the size of the rectangle port the OP needs.
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87IrocTim
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PostPosted: Tue Apr 06, 2010 4:09 am    Post subject: Reply with quote

jwrengjieng

Last edited by 87IrocTim on Tue Apr 06, 2010 4:13 am; edited 1 time in total
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87IrocTim
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PostPosted: Tue Apr 06, 2010 4:11 am    Post subject: Reply with quote

i currently have a 427 tall deck iron intake. ran like the taliban in a catholic church until about 3500 then it fell on its face like an irish frat boy.
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seventy468
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PostPosted: Tue Apr 06, 2010 1:28 pm    Post subject: Reply with quote

87irocTim... would you be interested in selling? or atleast posting photos or a casting number?... was this oval port or square? Thanks!
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87IrocTim
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PostPosted: Tue Apr 06, 2010 7:52 pm    Post subject: Reply with quote

its a normal oval port, not peanut port. its in need of a good polishing and cleaning, you know how iron gets. most of the plugs and stuff is there, jsut came off the motor a couple months ago. ill get some pics up soon. honestly i dont know what its worth you probably know more about it then i do, im not too picky about a price. it came off of a 427 tall deck truck motor. the engine blocks casting number is 1006284 when i post pics ill have the intake numbers too.
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MufflerBearings69
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PostPosted: Tue Apr 06, 2010 8:28 pm    Post subject: Reply with quote

So the criteria to watch is BBC, iron, 4150 carb flange, and square port like the gasket above?

I am going yard shopping this week if I can get away Very Happy

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af2
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PostPosted: Tue Apr 06, 2010 8:28 pm    Post subject: Reply with quote

87IrocTim wrote:
jwrengjieng



Ok I give!! Laughing Laughing
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seventy468
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PostPosted: Tue Apr 06, 2010 9:48 pm    Post subject: Reply with quote

mufflerbearing... yes that would be it! good luck! I am going to give mercruiser a call shortly and see if they can't help also
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87IrocTim
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PostPosted: Tue Apr 06, 2010 9:57 pm    Post subject: Reply with quote

af2 wrote:
87IrocTim wrote:
jwrengjieng



Ok I give!! Laughing Laughing


i ran into some technical difficulties Laughing
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Big Dave
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PostPosted: Tue Apr 06, 2010 10:55 pm    Post subject: Reply with quote

MufflerBearings69 wrote:
So the criteria to watch is BBC, iron, 4150 carb flange, and square port like the gasket above?

I am going yard shopping this week if I can get away Very Happy


Tall deck manifold will not bolt on to a standard deck height block as it will be too wide to fit between the heads. (Though you can use a standard deck height block intake on a tall deck block if you add two spacers about 3/8" thick with an added set of intake gaskets).

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Paul P
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PostPosted: Tue Apr 06, 2010 11:15 pm    Post subject: Reply with quote

Let's just put it this way. That tall deck truck intake is not the best factory cast intake for a BBC...

Keep looking.

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af2
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PostPosted: Wed Apr 07, 2010 12:20 am    Post subject: Reply with quote

seventy468 wrote:
just to clarify the block is originally a td 427


In case you guys forgot. Wink
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MufflerBearings69
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PostPosted: Wed Apr 07, 2010 2:55 am    Post subject: Reply with quote

Ok so is the one we are speaking of going to be from a tall deck or no?
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