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Old 09-18-2010, 10:01 AM   #1
1-PU70
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Diffeence Between Integral Head & Non Intergal

So what is the difference between the two? Is one better then the other? What years where each made? I was thinking of looking for a streight 6 and want to be informed. Thanks Gary
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Old 09-18-2010, 10:43 AM   #2
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Re: Diffeence Between Integral Head & Non Intergal

An integral head has the intake manifold built into the head itself. It is all the same casting. The earlier "non" integral head has the intake manifold as a seperate casting that bolts-on just like the exhaust manifold.

As a general rule, most guys prefer the non integral.
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Old 09-18-2010, 10:43 AM   #3
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Re: Diffeence Between Integral Head & Non Intergal

IMO I would look for the older model inline six. The intergral head come out in the late 70's I think. I know my 81 has one. The intake manifold is cast with the head so there's no changing them for any performance parts. Now I don't know if the head off a older motor will fit the new blocks as I haven't researched it.
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Old 09-18-2010, 10:59 AM   #4
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Re: Diffeence Between Integral Head & Non Intergal

The integral heads started in '75, IIRC.

You can use either one, they interchange.
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Quote:
Originally Posted by Longhorn Man View Post
As for reading directions...
The directions are nothing but another man's opinion.
Learn from the mistakes of others, you won't live long enough to make them all yourself...

Bad planning on your part does not necessarily constitute an instant emergency on my part....

The great thing about being a pessimist is that you are either pleasantly surprised or right.
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Old 09-18-2010, 01:40 PM   #5
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Re: Diffeence Between Integral Head & Non Intergal

The intregal head came out in 75 like Longhorn say's although they didn't use it on Camero's & 292's. They were real bad about cracking the heads & ex. manifolds & broken bolt's in the ex. manifold. The head was ungodly heavy & burdened down with weird emission control gadget's. It's best to stay away from them.
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Old 09-18-2010, 09:30 PM   #6
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Re: Diffeence Between Integral Head & Non Intergal

Don't let the above discourage you if you have the chance to buy an otherwise good engine with an integral head. As already mentioned, the earlier head is a straight across swap on any of the 63-up inline sixes.

Ray

Last edited by raycow; 09-19-2010 at 01:05 AM.
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Old 09-19-2010, 10:05 AM   #7
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Re: Diffeence Between Integral Head & Non Intergal

Thanks for the replys. Great Info.
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