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2001 4.0 cylinder head, what casting numbers are compatible with 0330?

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Old 03-16-2012, 11:27 AM
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Default 2001 4.0 cylinder head, what casting numbers are compatible with 0330?
please help !!!!!!
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Old 05-08-2012, 01:22 PM
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nothing else will fit for the 0331 head
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Old 05-08-2012, 02:04 PM
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Originally Posted by nyengine
nothing else will fit for the 0331 head
Well I know that's not true! The earlier heads will fit just fine, you will just need an adapter for the manifolds to fit, runs about $100
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Old 05-08-2012, 02:30 PM
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as far as i know earlier 0630 heads can replace a 0331 head but you will need to fab a mount for the coil
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Old 05-08-2012, 02:32 PM
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Originally Posted by 97jeepxj40
as far as i know earlier 0630 heads can replace a 0331 head but you will need to fab a mount for the coil
Yep, I was just going to add that to my post, thanks!
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Old 05-09-2012, 07:48 AM
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let me be more clear. you will have to modify. you can not unbolt your 0331 head and bolt on a 0630 or 7120 head without modification.
new 0331 heads are very easy to buy and are not as expensive anymore
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Old 05-23-2012, 04:17 PM
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I'm looking at this very swap. What sort of modifications are we talking about?
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Old 05-23-2012, 04:23 PM
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Do what I did... buy an 0331 head from an '05 or later wrangler. Same head, direct bolt on, doesn't have the cracking issue! Everything bolts up, no adapters or fabbing brackets.

I got a used one with warranty and only 64k miles for $175 shipped.
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Old 05-23-2012, 04:33 PM
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My brother has a HO head off of a 95 in his shed. It's free. That's why I don't just buy a reman or used one.
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Old 05-23-2012, 04:38 PM
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The intake and throttle body are still bolted to it as well.
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Old 05-23-2012, 04:50 PM
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Nevermind. Now that I've actually READ this thread I see the problem.


Crap...
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