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post #1 of 6 (permalink) Old 06-19-2014, 01:35 PM Thread Starter
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351W Build

I hope I can ask this question without confusing anyone.I'm about to start building this 351W and I have a question about the heads and intake.The engine block is D4AE-6015-AA.The current heads on the block are D8OE-AB, which I'm taking off. I have a set of GT-40's and D0OE-C heads, but haven't decided which ones I'm going to use. The D0's have had a little work done to them, and the GT-40's will need to be cleaned up. I have a stock intake E4TE-9425-BB that I'm planning on using.
Ok, so the question is when I sat the intake on the motor as is, the passages between the heads and intake didn't line up.The intake sits a little low.When I mount the GT-40s or D0's will the intake fit correctly?Will changing those heads change the way the intake sits up top?I'm thinking the heads may be the problem and hoping the deck of the block hasn't been modified in any way.When I initially got the motor about a year ago, it had an Edelbrock Performer intake on it.It wasn't running, and I didn't look to see if it was line up neither.
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post #2 of 6 (permalink) Old 06-19-2014, 02:59 PM
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Did you have any intake gaskets on the heads when you checked it?

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post #3 of 6 (permalink) Old 06-19-2014, 03:00 PM
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how much is 'a little low'?? The intake gaskets and end seals will raise it up 'a little'...

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post #4 of 6 (permalink) Old 06-19-2014, 05:11 PM
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it isnt the block deck, or the cylinder heads you have to worry about being milled, its the intake. it sounds like the intake was milled, probably about .015-.020 just off hand.

but before i panic, i would first set up a gasket on the heads, along with a head gasket, and then set the intake down and see how far off things are.

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post #5 of 6 (permalink) Old 06-19-2014, 10:12 PM Thread Starter
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I didn't have a gasket. That may make a difference. I didn't really measure the distance it was off, but the gaskets may lift it up
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post #6 of 6 (permalink) Old 06-19-2014, 11:54 PM
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I'd run the D0OE-C heads. They have smaller chambers than the '40's and conventional rocker studs as opposed to the pedestal-mount bosses on the '40's. The valve sizes are identical. I'd also eBay that E4 intake and go with something (anything) different, my choice would be a Stealth 8023.


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