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Geo. H · 02-21-2013, 01:18 AM

Are you running a stock head? The one with a big "C" on it? That head has a CR of about 4.6 to one. I run a B engine, but with a 5.9 CR Model A head. That also means I use a Model A water pump. Works for me.

02-21-2013, 01:18 AM	#5
Geo. H Senior Member Join Date: May 2010 Posts: 374	Re: Model b waterpump help Are you running a stock head? The one with a big "C" on it? That head has a CR of about 4.6 to one. I run a B engine, but with a 5.9 CR Model A head. That also means I use a Model A water pump. Works for me.