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12A differences?

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Old 01-18-05, 12:00 AM
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Rx-hippie

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12A differences?

What is the difffernce between a 71-73 12A intake manifold and a 74+ 12A? Racing beat has different part number for each... but would a manifold for a 74 12a still fit onto a 73 12A? And if not, why won't it fit? Mounting? Porting alignment? etc.. and help is greatly apreciated. Thank you.
Old 01-28-05, 07:18 PM
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port size is different and the bolt pattern is different too
Old 01-28-05, 08:10 PM
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bolt pattern are the same for all 12-A's (4port) but the port size varies.
Old 01-28-05, 08:23 PM
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Yea bolt pattern was the same and port size seemed to be the same ( on the manifold side).. bought a manifold and weber carbs off ebay for $300 and figure if it didn't fit I would just resell them. After cleaning them up with some carb cleaner.. installed fine.. except for the fact the the manifold hit the water pump housing... nothing a little filing didn't fix... Got the car running fine.



More pics of my little project can be found here.
http://wreckedyouth.com/modules.php?...view_album.php
Old 01-28-05, 08:27 PM
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well looks like i got owned by wacky on this one , oops
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