Right or Left Head
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Joined: Jan 2010
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Right or Left Head
This being my first Ford, I'm ready to put my heads on my '95 F250 w/351w. Is there a right and a left? Does it make a difference since my air pump goes to the exhaust manifold. Thanks for any help.
FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
Have a look at ends of both heads as you mount them to make sure the end with the smaller thread inserts go towards the front of the motor, pay particular attention to the very outermost hole nearest the exhaust ports. All these heads are drilled for air injection all the way through front to back, on motors that have the air tube across the back the rear port is left open but on other motors there is a blind insert installed that has a larger inside diameter than the other mounting holes.
