03-30-2008, 01:54 PM
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Senior Club Cobra Member
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Join Date: Jan 2004
Location: St. Louis,
Mo.
Cobra Make, Engine: 427 S.O. Dual Quad / Cobra undecided
Posts: 1,380
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Not Ranked
Scufty,
I have a 68' SO block in which I decided to run solid lifters. You are correct that the groove neck does assist in lifter lubrication/circulation. The main idea in plugging the the galleries is to enhance oil pressure throughout the rest of the oil circulation system. Most of the old FE builders will tell you that pressure is wasted upstairs and better utilized on the bottom end. The gallery plugs are usually drilled out .90 if my memory serves. This drilling of the plug keeps enough oil in the top end while offering enough restriction to increase pressure and deliver more volume to the bottom end. |
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