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SeaSlugs · 11-18-2014, 07:45 PM

USUALLY freeze plugs in an engine especially modern engines is its a hole used during the casting process and then yes doubles as a freeze plug hole so your block doesnt (supposedly) crack.

Maybe he had a different casting method for A engines?

11-18-2014, 07:45 PM	#2
SeaSlugs Senior Member Join Date: May 2010 Location: Central, IL Posts: 3,968	Re: freeze plugs ? USUALLY freeze plugs in an engine especially modern engines is its a hole used during the casting process and then yes doubles as a freeze plug hole so your block doesnt (supposedly) crack. Maybe he had a different casting method for A engines? __________________ 1929 Model AA - Need long splash aprons!