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can we make our 4.0 any bigger? 4.3? 4.5?

Old 03-04-2010, 01:10 AM
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Red Beast
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Default can we make our 4.0 any bigger? 4.3? 4.5?

hey, i know some of the older mustangs (92-04) with the 3.7liter engines were able to make them into 4.3 ltrs. can we get ours 4.0's to have any more? say 4.3 or 4.6 or whatever?
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Old 03-04-2010, 02:02 AM
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dopedc
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like boring it over? i dont see why we couldn't?
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Old 03-04-2010, 10:18 AM
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i saw a post from another person who said that its easy to do it with the 3.7's but extremely hard if not "near impossible" to do it with ours.
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Old 03-04-2010, 10:53 AM
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Fred Malibu
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^^ looks like you answered your own post..


though I will be checkin back to see if anyone else has a definite answer..
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Old 03-04-2010, 02:11 PM
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but then why? why would ours be so difficult to do it to? there has to be some reason.
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Old 03-04-2010, 03:11 PM
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3.7's have thicker engine walls that can be bored into, the 4.0s do not, you'd harm the integrity of the engine
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Old 03-04-2010, 03:22 PM
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howarmat
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Originally Posted by killdar
3.7's have thicker engine walls that can be bored into, the 4.0s do not, you'd harm the integrity of the engine
winrar!
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Old 03-04-2010, 03:39 PM
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thank you, i have my answer, since i plan on going FI over summer it prob would be a bad idea to weaken the walls, well thanks man.
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Old 03-04-2010, 11:10 PM
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just an fyi, they were 3.8's. The 3.7's are what is going in the v6's in 2011. and what killdar said ^
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Old 03-05-2010, 02:18 AM
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Originally Posted by Red Beast
thank you, i have my answer, since i plan on going FI over summer it prob would be a bad idea to weaken the walls, well thanks man.
i think its best to get a supercharger. ur car would look sick with an x charger
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