GT40 head question - MustangForums.com

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GT40 head question

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Old 01-06-2009, 07:18 AM
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mrshleepy76
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Sorry to bring this question up. I did do a search lookup but couldn't find the simple answer. Question is i would like to know the difference between the GT40 and GT40P heads in regards to which one will fit a carbed intake without any modifications and which one would give me optimum performance.
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Old 01-06-2009, 08:19 AM
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FORD TOUGH
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They both will fit a carbed intake. The gt40 p's have a smaller combustion chamber and the spark plug is on a different angle which will require you to run special headers. Here is how you can id those heads. http://sbftech.com
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Old 01-06-2009, 08:32 AM
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mrshleepy76
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Thanks
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Old 01-06-2009, 02:04 PM
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nacanitihs
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the p's will get you a little more power due to the smaller combustion chamber and spark plug location but could be more expensive to get new headers if you already have a set. they can fit with bbk unequal shorties with a 90 degree plug on #7.
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