T O P I C R E V I E W
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AcesWild85
Member # 2616
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posted
I know you can get the gt 40 heads, upper and lower intake from exploers with a 302, but what years of explorers have the 302? What about the F or E series trucks? Do any of those have GT 40 stuff in them? Do any of them have a larger mass air meter that can be used in a 5.0?
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shade-tree
Member # 298
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posted
off the top of my head...
94-97.5 explorers = GT-40 97.5- '00 explorer = GT-40P
only explorers/mountaineers,lightnings and 93-95 cobras had the GT-40 heads
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AcesWild85
Member # 2616
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posted
whats the difference between gt40 and gt40p?
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shade-tree
Member # 298
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posted
not much, honestly, more swirl, revised spark location, slightly higher efficiency, probably slightly smaller combustion chambers, and usually specific shorties are required, but most long tubes work.
probably within 5-10 HP of each other
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AcesWild85
Member # 2616
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posted
would the stock 5.0 headers bolt up allright?
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HungryHippo
Member # 537
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posted
you need different headers for the "P"s, unless you have longtubes
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AcesWild85
Member # 2616
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posted
How could you tell the 2 apart visualy? Is there a casting number on them or anything?
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shade-tree
Member # 298
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posted
easier than you'd think, the front of the head has 3 bars if GT-40, 4 if GT-40P, these are large, raised lines on the front of the head, like 2" long.
also, F77E (I think, going on memory) is casted under the GT-40P valvecover, along with the letters 'GT-40P'
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AcesWild85
Member # 2616
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posted
Cool! Thanks man
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