Re: Question on 3933198 Intake
hey kevin, i am looking in the colvins book and it shows the intake with the j shaped thermostat housing installed which covers the boss in the coolant runner. it states it is the same as #3933163 intake except for plenium. that intake was used as early as 1966. it might be the boss or drilled hole for temp sending unit if early heads were used that did not have sender hole in them. dennis
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