Quote:
Originally Posted by The Boss
Only the 72 HO intake has the raised floor - the others are the same.
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Yes, Boss is right. I have measured the plenum depths on original RAIV and '71 HO intakes and they are cast at the same depth as the cast iron intakes. The '72 HO and service replacement HO intakes ('71 & '72) have the shallower floor by .125" or so. I haven't measured a service replacement RAIV intake yet as I don't have one of them.
Dennis