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Old 02-17-2012, 07:49 PM   #1
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egr and throttle body question

Found a pretty good deal on a new 89-93 5.0 75mm bbk throttle body and new egr. Already have a gt40 intake. Is 75 mm too big for a stock motor and 19# injectors? And it will bolt up to the gt40 intake correct?
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Old 02-17-2012, 07:54 PM   #2
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Re: egr and throttle body question

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Originally Posted by robert3188 View Post
Found a pretty good deal on a new 89-93 5.0 75mm bbk throttle body and new egr. Already have a gt40 intake. Is 75 mm too big for a stock motor and 19# injectors? And it will bolt up to the gt40 intake correct?
I don't think the GT40 uses an EGR does it?
My Cobra intake does not and it was derived from the GT40.


The 75MM TB is too large and will negatively affect your low end power.
A 70MM is max size recommended for a mostly stock to mildly modified 5.0.
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Old 02-17-2012, 09:11 PM   #3
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Awesome. Thanks. Great info as always.
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Old 02-17-2012, 09:23 PM   #4
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Re: egr and throttle body question

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Awesome. Thanks. Great info as always.
You're welcome, good luck with your modding.
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Old 02-17-2012, 10:18 PM   #5
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Ok trojan. Guess I ain't done with the questions. So the intake came with a throttle body off of a explorer which I'm told is 65 mm. How can I modify this to fit my 91 gt?
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Old 02-17-2012, 11:14 PM   #6
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Re: egr and throttle body question

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Ok trojan. Guess I ain't done with the questions. So the intake came with a throttle body off of a explorer which I'm told is 65 mm. How can I modify this to fit my 91 gt?
Try these.



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Old 02-17-2012, 11:30 PM   #7
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Awesome. I'm a welder by trade. So that's no sweat! What do u think bout the.egr? Should I.get rid of it?
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Old 02-17-2012, 11:37 PM   #8
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Re: egr and throttle body question

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Awesome. I'm a welder by trade. So that's no sweat! What do u think bout the.egr? Should I.get rid of it?
If you don't need it for smog testing you can.
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