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Old 12-03-2010, 05:13 PM
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When would a intake need milled after milling cylinder heads and block SBC

Hello guys I have some questions. I have SBC that I have gotten work done on my world sportsman 2 heads and I had them milled .010 cause they checked them and suggested it be done.

I also had my block decked .010 last year as well and it was a brand new block in case you need to know and my question is will my intake still be safe and not need to be milled as well?

Also my distributor was fine with my block being milled just .010 but now that my heads are milled will it be ok as well? I know after your block is decked so many times and your cylinder heads milled you have to get your intake done a shim kit for your distributor.

Hope someone can shed some info here on if I am safe or not.
Thanks
Eric

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Old 12-03-2010, 05:28 PM
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head milling

if its a large single plane you an set them on there with the gaskets ang snug em down and look at the right angle with a light if your lucky to see if you can see part of the roof of the head port.can with a brodix anyway.if not you can put something on ther to leave a witness mark and take them back off to see.be sure to use weatherstrip adhesive to hold them to the head.
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Old 12-03-2010, 06:52 PM
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A combined cut of .020 for the heads and block, should not cause problems.
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Old 12-04-2010, 07:35 AM
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The best way to be sure is to pin the heads and intake manifold. If you are serious about getting all the free power you can you'll need to do it anyway so you can port match the intake/gasket/heads.
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Old 12-04-2010, 05:31 PM
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Thanks guys for the info. I did not think I would have to have it milled I just don't want any more issues with oil on my plug threads. I had my heads done with all new bronze liners and ditched the umbrella seals and went with a ring and band type seal so I am hoping my issues with the oil on the back of my intake valves and getting on my plug threads and causing misfire problems will be all gone. If it happens again I don't know what I will do since everything else is fine.
Eric
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