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Old 07-17-2014, 09:26 AM
Bill French Bill French is offline
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Default 1966 pontiac tempest
will 4x heads off of a 74 455 work on a 66 326 pontiac engine

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Old 07-17-2014, 02:48 PM
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mrgto69 mrgto69 is offline
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Originally Posted by Bill French View Post
will 4x heads off of a 74 455 work on a 66 326 pontiac engine
Hi Bill. Is your goal to have 6:1 compression? Are you using a blower or planning to use NOS all the time? Those heads give you 8.2:1 on a 455. If you put it on a 326, you can almost use kerosene to run your car. I would find a better engine block. Getting pistons for a 326 might be very hard... GP Mike

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