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GT 40 Heads on 289
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Qwiked
New User
| Posts: 1
| Joined: 08/09
Posted: 09/02/09
11:06 AM
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I am planning on putting GT40 heads on my 65 289 Mustang -- Do these heads require special headers or exhaust manifolds?? I am told there is an issue with spark plug angles. Any suggestions??
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Posted: 09/02/09
10:21 PM
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I assume you mean the later model GT40P heads. Yes there is a problem with spark plug location if you use mustang headers(no room for the wire) however Ford racing and a few others have a header designed for those heads now I believe. The issue is that the plugs used to be angled toward the exhaust valve and are straight in the Gt40P heads.
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