Cleveland
Cleveland
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Joined: Sep 2001
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You can't swap 351C 2V heads onto a 400m because it doesn't exist but you can swap 351C 2V heads onto a 400. The 400 already has a head similar to a 351C tho. There are minor differences thru the years in the combustion chamber volume and the exhaust port shape.
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Joined: Apr 2006
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My valves are bad on my 400 and rather than mess around with them. I have a set of good 351c heads, but I don't know the year. I should check the casting #'s.
Last edited by factory594x4; Jun 4, 2006 at 11:56 PM.
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Joined: Sep 2001
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Some 351C/M/400 Combustion chamber volumes and type:
--------------------------------
70-74 351C 2V =76.9-79.9cc open
71-85 351M/400 =76.9-79.9cc open
70-71 351C 4V =61.3-64.3cc quench
71 Boss 351 =64.6-67.6cc quench
71Cobra Jet =73.9-76.9cc open
72-74 351C/HO 4V =73.9-76.9cc open
Australian 2V =62cc +/- quench
These volumes can vary from one end of the head to the other. *The above
information comes from: Ford Performance, by Pat Ganahl.
The combustion chamber size will vary your compression ratio. You want to be between 8.0-9.0:1 to run pump gas.
--------------------------------
70-74 351C 2V =76.9-79.9cc open
71-85 351M/400 =76.9-79.9cc open
70-71 351C 4V =61.3-64.3cc quench
71 Boss 351 =64.6-67.6cc quench
71Cobra Jet =73.9-76.9cc open
72-74 351C/HO 4V =73.9-76.9cc open
Australian 2V =62cc +/- quench
These volumes can vary from one end of the head to the other. *The above
information comes from: Ford Performance, by Pat Ganahl.
The combustion chamber size will vary your compression ratio. You want to be between 8.0-9.0:1 to run pump gas.
