400 head casting number???
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Mountain Pass
Joined: Jan 2019
Posts: 200
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From: PNW-Western WA
400 head casting number???
Where do I find the casting numbers on my 1980 F350 400 head? The info I have found online showed numbers between rockers. I dont have any numbers in this location. The heads are mounted and intake is installed.
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Joined: Apr 2004
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Intake runner under valve cover.
M-Block 351M/400 Parts Reference.
Clear picture here:
M-Block 351M/400 Photo Archive
M-Block 351M/400 Parts Reference.
Clear picture here:
M-Block 351M/400 Photo Archive
More Turbo
Joined: Sep 2003
Posts: 516
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Look at the top corners of the head right outside the valve cover. If someone swapped a set of 4 barrel Cleveland heads there will be a little number "4" on the two top corners.. If there is a dot by the 4 it is an open chamber 4 barrel head. No dot means the super desirable closed chamber head. No number means the head common to 351M and 400s. 2 barrel heads had a "2" and are functional equivalents of the Modified heads.
You can leave the valve covers on.
R.
You can leave the valve covers on.
R.
Logistics Pro
Joined: May 2015
Posts: 4,474
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From: Tri Cities, TN
Look at the top corners of the head right outside the valve cover. If someone swapped a set of 4 barrel Cleveland heads there will be a little number "4" on the two top corners.. If there is a dot by the 4 it is an open chamber 4 barrel head. No dot means the super desirable closed chamber head. No number means the head common to 351M and 400s. 2 barrel heads had a "2" and are functional equivalents of the Modified heads.
You can leave the valve covers on.
R.
You can leave the valve covers on.
R.
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