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1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

223 head swap. Head bolt size difference

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Old Jan 28, 2009 | 07:13 PM
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223 head swap. Head bolt size difference

Can I use a later head on my earlier block? My block is bored for 7/16" head bolts. My rebuilt head is the newer 1/2" bolt size. I'm told the 302 hot rod guys use a special washer with a short bushing on the head bolt to bush a 7/16" up to 1/2" when fitting 351 heads on a 302. The washers are available at ARP fasteners. Sounds like it would work?? Any one done it?ThanksBob
 
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Old Jan 28, 2009 | 10:37 PM
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My guess is that Col. Flashman or NumberDummy would know. Hopefully they will be around soon. Good luck.
 
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Old Jan 29, 2009 | 06:51 AM
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C1TE6065A .. Bolt, Cylinder Head / 1/2" -13 x 4.44" / Fits: 1961/64 223 I-6.

B2AZ6065A .. Bolt, Cylinder Head / 7/16" -14 x 4.06" / Fits: 1952/60 223 I-6.

Not only is the head different, but...so is the valve cover & gasket.

The 1952/60 valve cover is held on by two nuts that thread onto two studs which protrude thru the center of the cover.

The 1961/64 valve cover uses 8 bolts around its perimeter to retain it.

I have a pal (Col. Flashman knows him too) that has a 1954 F100 with the later head. I'll have to call and ask him what he did to make it work.

Will post back when I find out later today.
 
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Old Jan 29, 2009 | 11:31 AM
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Thanks Bill. I will watch for it.
 
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Old Jan 29, 2009 | 07:41 PM
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I bought my rebuilt 233 - it's a 54 with a 63 head. Can't tell you the details of the machining, but it does run nicely!
 
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Old Jan 30, 2009 | 11:59 AM
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erin
I checked out your gallery. Nice truck. Hope mine comes out that well. Living proof that the head swap is doable. Thanks
 
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Old Jan 30, 2009 | 04:30 PM
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Ford tractors in the 50's and 60's had the same situation. The early heads had 7/16" bolts and the later heads used 1/2" bolt. In the book they call it "new head to old block" and used shoulder bolts. They had 7/16" thread and 1/2" shoulder on top to take up the extra room. Ford part# D3NN-6065-A for the bolts. The book shows them to be 4.00" long. I don't know if they are still available. Dave
 
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Old Jan 30, 2009 | 04:33 PM
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Sorry I should have added this also. Ford also made a stud to go the other way. !/2" threads on bottom & 7/16" shank 4" long. Then you put nuts on the top. Ford part# D3NN-6N014-A for the studs. Dave
 
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Old Jan 30, 2009 | 04:52 PM
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Originally Posted by panningbros
Sorry I should have added this also. Ford also made a stud to go the other way. !/2" threads on bottom & 7/16" shank 4" long. Then you put nuts on the top. Ford part# D3NN-6N014-A for the studs. Dave
D3NN-6N014-A is not a Ford part number, it's an ID number, which is prolly related to a tractor or an industrial engine, as the 3rd/4th digits of NN in the prefix is a dead give-away.

The last year Ford marked actual part numbers on parts was 1956.
 
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Old Jan 31, 2009 | 04:30 AM
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Dave that's interesting. I will try to find some of them. My Dad is into old Farmalls. His network of tractor guys might be able to steer me to a source. Especially as the ARP insert washers are almost $5 each!! on top of the price of new head bolts. Thank youBob
 
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Old Jan 31, 2009 | 04:46 AM
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I'm still waiting for my pal with the 1954 F100 to call me back...he's a former line mechanic now retired.

If you P/M me, I'll pass along his West LA phone number...he has no computer.
 
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Old Jan 31, 2009 | 08:10 AM
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Originally Posted by NumberDummy
D3NN-6N014-A is not a Ford part number, it's an ID number, which is prolly related to a tractor or an industrial engine, as the 3rd/4th digits of NN in the prefix is a dead give-away.

The last year Ford marked actual part numbers on parts was 1956.

Sorry, that might be right for automotive division, but not correct for ag. These ARE good part numbers. I called my local dealer this morning. #D3NN-6N014-A step down studs are $7.24 each. #D3NN-6065-A shoulder bolts are $24.21 each. 3rd and 4th digit NN numbers are very common in ag parts. Dave
 
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