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Old 11-04-2016, 07:47 AM
SD455DJ SD455DJ is offline
Ultimate Warrior
 
Join Date: Aug 2009
Location: Grand Rapids, MI
Posts: 3,650
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Quote:
Originally Posted by The Boss View Post
Only the 72 HO intake has the raised floor - the others are the same.
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