core plugs

Posted By darrell 5 Years Ago

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darrell	Posted 5 Years Ago
Supercharged Group: Forum Members Last Active: Last Month Posts: 453, Visits: 22.1K	i have tried several times to find out when they stopped using core plugs in 56 heads.does anyone know and did dif and cf heads change at the same time.
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core plugs By darrell ( 5 Years Ago )

Not sure when they quit but 56 mercury 312s had them.I think they were... By carl ( 5 Years Ago )

I don't know when either, but both styles were ECZ-C heads... By paul2748 ( 5 Years Ago )

I have ECZ-C, ECG-D and ECL-A heads with and without the core plugs... By Ted ( 5 Years Ago )