1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Dimensions? Please. (12A 4 port)

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Old Feb 5, 2025 | 08:53 PM
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Dimensions? Please. (12A 4 port)

I was designing something and do not currently have a 12A to take a measurement off of. I was wondering if anyone could get the center distance of those studs marked by the red line. Or from outer edge to outer edge of the secondary ports marked green. If someone could get those measurements for me it would be greatly appreciated. I have searched the internet far and wide and cannot find anything on the measurements or design of the intake flange. The last guy who asked about a drawing of the flange got told to just buy a gasket and measure it himself. Why is the intake flange such a huge secret??? Theres plenty of CNC ones and somehow theres nothing online???

Sorry about the mini rant, would appreciate if someone had those measurements. Thank you.
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Old Feb 5, 2025 | 09:38 PM
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just under 9 7/8" between the bolt holes and just over 10 1/8" between the ports.



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Old Feb 5, 2025 | 09:47 PM
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Thank you so much
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