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BBF exhaust port header extensions…

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BBF exhaust port header extensions… Empty BBF exhaust port header extensions…

Post  nedceifus November 23rd 2022, 11:45 am

Just watched a YouTube video with a 600 & something  ci BBF with some kind of port extension spacing the header out 1.5” or so. Anyone have any experience with this?
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Post  nedceifus November 23rd 2022, 11:47 am

BBF exhaust port header extensions… 23a23210
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Post  nedceifus November 23rd 2022, 11:54 am

I’m guessing it’s a custom adapter to fit a BBC header. Would straightening the exhaust flow another 1.5” coming out of the port have a performance gain?
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Post  BBFTorino November 23rd 2022, 8:02 pm

It looks like it's purpose is to clear the bellhousing or other components in a tight chassis

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Post  rmcomprandy November 24th 2022, 12:14 pm

BBFTorino wrote:It looks like it's purpose is to clear the bellhousing or other components in a tight chassis

Might be, a stick shift bell-housing is considerably larger in diameter than an automatic; flywheel, too.

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