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EFV-8 Club Forum / General Ford Discussion / Cylinder head question

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Discussion Topic: Cylinder head question

bentspoke

08-11-2021 @ 12:32 PM

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I own a '34 Ford which is largely original. Sometime over the years a previous owner swapped the aluminum cylinder heads for steel and I am in the process of replacing them.

The passenger side cylinder heads are scarce, but I came across this one in usable condition (pictured). The part number stamp has the letter "R" after the numbers 40-6049. This seems unusual; is this a Ford head? I am wondering if it could be an aftermarket replacement part. Thanks.

40 Coupe

08-12-2021 @ 5:51 AM

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Ford production heads have the part number indented into the casting and some have raised numbers, none are stamped. Typically Ford heads with part numbers with suffix R are made after production as replacement. IMO the head shown is improper for an original 34 and most likely an aftermarket head. The head shown appears to have a manufacturer mark (circle with C inside ) Ford heads with manufacturer indication are a circle and a number ( 1, 2 or 3 inside).

This message was edited by 40 Coupe on 8-12-21 @ 5:58 AM

1934 Ford

08-23-2021 @ 2:54 PM

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Has any body had their aluminum heads welded? I took one off that had coroded around a water passage an got to close ot the combustion chamber and leaked. I think those corroded areas could be alumawelded and then resurfaced to last another 87 years? Have any of you guys done that?

1934 Ford's since 1972

This message was edited by 1934 Ford on 8-23-21 @ 2:56 PM

ford38v8

08-23-2021 @ 4:20 PM

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I’m not a ‘34 expert, but I’m with 40 coupe. The lack of Ford script, the mold mark dots, the R, and the apparent part number stamping all point to aftermarket.

About welding an aluminum head, tig should do an acceptable job, but warpage issues will require consideration also.

Alan

3w2

08-23-2021 @ 5:46 PM

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Alan,

With respect, no Ford cylinder head, V8 or four-cylinder had Ford script prior to August, 1934 and no '33 aluminum V8 head had a part number until a cast iron version was released late in that model year. The cylinder head in question appears to be a typical '33 head with a service part number stamped on it post production. There's really nothing on the head to distinguish it from a used-in-production head except for that stamped-in number.

ford38v8

08-23-2021 @ 6:42 PM

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Ah ha! I’m sure glad I qualified my post with the fact that I’m not a ‘34 expert!

Alan

08-23-2021 @ 9:28 PM

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But Alan....we thought you were just kidding about not being an expert

John

bentspoke

08-24-2021 @ 6:13 PM

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Thank you for the comments.
I am assuming the "R" designates "replacement". Did Ford or the Ford dealers stamp "R or L" at any time to indicate side for the 21 stud heads?

1934 Ford

08-25-2021 @ 9:56 AM

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Left or right? They only fit one way, waterpump flange to the front.

1934 Ford's since 1972

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