[DeTomaso] Removal of pipe plugs when 351C heads are hot-tankcleaned?

[Doug Braun]

Yes, these are original cast iron 351C-4V heads.

-----Original Message-----
From: detomaso-bounces at realbig.com
[mailto:detomaso-bounces at realbig.com]On Behalf Of charles buthala
Sent: Wednesday, November 14, 2007 8:05 AM
To: detomaso at realbig.com
Subject: Re: [DeTomaso] Removal of pipe plugs when 351C heads are
hot-tankcleaned?


Are these the original cast iron heads???
  If they are the A3 then do not clean.  If you clean Al heads with screw in
plugs, 5 per head, then you will have to reseal them, and that can be a real
nightmare.  I have first hand experience.

Doug Braun <doug at silicondesigns.com> wrote:
  When headwork is to be done on old dirty heads and the machinist will be
hot-tank cleaning them, should the 3 water jacket pipe plugs be removed
during the hot-tank process or should these be left intact? These are the
three large pipe plugs screwed into the casting between the row of valve
springs and the
exhaust side of the rocker cover rail. What say ye?

Doug Braun
blue 73L #5505