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Thread: 1966 289 build
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post #12 of (permalink) Old 11-10-2016, 05:43 PM Thread Starter
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Join Date: Nov 2016
Location: Virginia
Posts: 10
Originally Posted by falconfred View Post
Oversized valves will definitely increase flow. If you are planning to get a valve job the installation is essentially free.

Part of the reason 289 heads are restrictive is because of the dimunitive size of the valves. Any work you do on the ports will be of limited value with stock valves.

BTW switching to a roller cam can be fairly expensive unless you have a later model block.
what all is necessary to change for a roller? I have looked into comps kit that comes with lifters springs pushrods timing kit retainers hardware etc, what am I missing?
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