D3TE block that is pitted in 2 cylinders at 4.07 is this bad ? I bought the block told maybe hone it or .30 stroker kit.
D3TE block
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
360/390 use the same engine block, the bore is the same (4.05"), the stroke is different.
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Junior User
Joined: Nov 2015
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From: Fairbanks
Boring
How does needto bore over if I read 4.05 to the wall , but the pit reads 4.07
Hotshot
Joined: Apr 2009
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From: Stanley, VA
This is about the maximum I like to bore FEs without having the cylinders sonic checked.
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Junior User
Joined: Nov 2015
Posts: 71
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From: Fairbanks
Does an x block, mirror105/501, 1974 block make it better or able to bore over more, the shop here in Fairbanks wants to line bore and do about $1500 worth of machine work to do a short block, there is no sonic testing here,
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Junior User
Joined: Nov 2015
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From: Fairbanks
It is, I'm told one can bore way over, I bought the block off Ebay with no over bore but they neglected to identify the corrosion pits
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Hotshot
Joined: Jul 2005
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From: Middle Tn.
IMHO, always bore the least needed to leave room for the future. If .030 will do it that's where I'd stop.
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Logistics Pro
Joined: Feb 2011
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From: Townsend, MT
If .040 won't clean it up, .060 will very likely be okay. I've had a couple different FE's bored .060 and have never had a problem.
Cargo Master
Joined: Dec 2015
Posts: 2,549
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From: Harned, Ky
$1500??? for block work???
I've had blocks sonic checked, align bored, align honed the mains and square decked for less than a grand.
I never align bore a block unless it's a performance build, standard bore job will do.
The biggest pit looks to be above the ring travel, have it bored to clean up the ring travel area, a small pit above that wont hurt anything.
Most of those blocks will take a .060 over bore, but if .040 will clean up all but the small pit above the ring travel area I'd stop there, it wont that carbon long to fill up the pit.
Hotshot
Joined: Jul 2005
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From: Middle Tn.
Because of the technology back in those days the FE blocks were known to have what's called core shift in the casting process. One block may take .060 and the next one will be trash at .040. Above .040 with out sonic testing is, imho, a risk. Another factor is that pit above, hopefully, the ring line. Any jagged type metal in the combustion area can become a hot spot with disastrous results.