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Old 02-28-2012, 03:22 PM   #1
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gt40p vs. gt40

i know this is probably a "beaten to death topic" but ive read arguements on other sites about this or that one is better than the other. i was wondering if anyone had some good solid answers on some pros and cons about which to go with?
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Old 02-28-2012, 03:57 PM   #2
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What I've gathered from everyone is that the p heads flow a little better and benefit from the spark plug being more towards the center of the combustion chamber. The only problem is that most of the headers won't work or will have to be slightly modified to work with them. MAC and frpp make p specific headers that work but some people have gotten bbk headers and some others to work with 90 degree plug boots.
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Old 02-28-2012, 04:10 PM   #3
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Quote:
Originally Posted by 5.slow
What I've gathered from everyone is that the p heads flow a little better and benefit from the spark plug being more towards the center of the combustion chamber. The only problem is that most of the headers won't work or will have to be slightly modified to work with them. MAC and frpp make p specific headers that work but some people have gotten bbk headers and some others to work with 90 degree plug boots.
+1 I used 90 degree wires to fix the problem. I'm running Bbk shorties and the only real problem I had was the second to last plug on the drivers side(if I'm remembering right) was basically laying on the header and burning through it in a matter of minutes.
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Old 02-28-2012, 04:14 PM   #4
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Quote:
Originally Posted by 5.slow
What I've gathered from everyone is that the p heads flow a little better and benefit from the spark plug being more towards the center of the combustion chamber. The only problem is that most of the headers won't work or will have to be slightly modified to work with them. MAC and frpp make p specific headers that work but some people have gotten bbk headers and some others to work with 90 degree plug boots.
Perfect explanation IMO
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Old 02-28-2012, 04:38 PM   #5
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Also to add to what has been said the P heads have a smaller combustion chamber which gives a small increase in compression.
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Old 02-28-2012, 05:09 PM   #6
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Now will p heads work well with the stock intake setup or should I just break for the gt40 intake setup to stack with the heads
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Old 02-28-2012, 05:15 PM   #7
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That's all up to you, if you have the dough a gt40 intake will help boost some ponies but it will work fine with the stock intake.
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