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Old 07-31-2007, 10:11 PM   #1
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1991 Formula 311
ISO 1991/1992 Merc racing 465 HP 502
Does anyone have this same motor? I am looking to see if you have the stock Holley 800 CFM's if you have a plate on the intake manifold or if that is due to mine having a Edelbrock Carb.
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Old 07-31-2007, 10:23 PM   #2
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Looks like a carb spacer and probably adapter for the Carb.
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Old 07-31-2007, 11:15 PM   #3
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They do ,checkout item #9
http://www.mercruiserparts.com/Show_...OR+AND+LINKAGE
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Old 07-31-2007, 11:23 PM   #4
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Yes, My HP465 used that spacer under the 800. Doesn't show well in the pic, but it's there. '
The stock GM highrise intake is a spread bore.
Last edited by US1 Fountain; 12-02-2011 at 12:13 PM.
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