BBC Exhaust Port spacing?
09-27-2007, 08:56 AM
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Originally Posted by 8a8mfh
I guess my curiousity will go unanswered, thanks. 
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09-28-2007, 05:38 AM
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Originally Posted by mrdragster1970
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I checked my Big Chiefs & my 24 degree. Someone else measure theirs than.
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I checked my Big Chiefs & my 24 degree. Someone else measure theirs than.
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Thank you for taking a minute to do so.
09-28-2007, 12:32 PM
#13
Originally Posted by mrdragster1970
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The bore spacing has nothing to do with exhaust spacing, example SBC.
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The bore spacing has nothing to do with exhaust spacing, example SBC.
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And I disagree that bore spacing has nothing to do with exhaust port spacing ON A BIG BLOCK CHEVY.
Notice how your number for port spacing is the same number as bore spacing? Thats because the exhaust ports are in the same location on each cylinder. If they are in the same location on each cylinder then the port spacing should be the same as the bore spacing.
09-29-2007, 08:53 AM
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As you even quoted, I said SBC. My point was don't just automatically use bore spacing. Not all exhaust ports are symetrical. Obviously I'm not going to list every head ever made. Read what was posted. Sorry I was't clearer. Also they have 5.1 & 5.2 blocks & heads now. Expensive, outlaw P/M mostly.
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As you even quoted, I said SBC. My point was don't just automatically use bore spacing. Not all exhaust ports are symetrical. Obviously I'm not going to list every head ever made. Read what was posted. Sorry I was't clearer. Also they have 5.1 & 5.2 blocks & heads now. Expensive, outlaw P/M mostly.
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Last edited by mrdragster1970; 09-29-2007 at 07:22 PM. Reason: spelling
09-29-2007, 03:03 PM
#15
Originally Posted by mrdragster1970
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As you even quoted, I said SBC. My point was don't just automatically use bore spacing. Not all exhaust ports are symetrical. Obviously I'm not going to list every head ever made. Read what was posted. Sorry I was clearer. Also they have 5.1 & 5.2 blocks & heads now. Expensive, outlaw P/M mostly.
As you even quoted, I said SBC. My point was don't just automatically use bore spacing. Not all exhaust ports are symetrical. Obviously I'm not going to list every head ever made. Read what was posted. Sorry I was clearer. Also they have 5.1 & 5.2 blocks & heads now. Expensive, outlaw P/M mostly.
I disagree that bore spacing has nothing to do with exhaust port spacing ON A BIG BLOCK CHEVY.
