Mis-Matched Heads?
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Mis-Matched Heads?
I bought a 351W engine for parts. The bottom end blown. I only wanted the heads, but they are mis-matched as far as I can tell. I only gave $25 for the engine.
One is a D70E head, and the other is a D80E head. One a 77, one a 78. Does anyone know where to tell me to find what they came off of, and if they will work as is?
One has a 6M2 stamped on it and the other a 7K17.
Thanks in advance
One is a D70E head, and the other is a D80E head. One a 77, one a 78. Does anyone know where to tell me to find what they came off of, and if they will work as is?
One has a 6M2 stamped on it and the other a 7K17.
Thanks in advance
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From: Troy,NY
Elder User
Joined: Jan 2004
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From: Troy,NY
It won't tell you what they came off of only the year they were made . They don't make specific heads for cars and trucks in general. They are down near the bottom. The valves are the same size and the same size combustion chamber. They will work but they have a pretty big chamber at 69cc.
Last edited by ken75ranger; Jun 4, 2006 at 05:25 PM.
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I was wanting to compare these with a 302 to know if they were on a 2bbl or 4bbl engine for flow reasons. That is why I was wanting to know what they came off of. I found that they might be off a 70's mid size car, or a 60's Torino, Falcon, Fairlane, etc.
I was told that they have bigger chambers (flow)than the 302, and that it may up my compression ration also, which is fine, but I dont want to be guessingat it.
I was told that they have bigger chambers (flow)than the 302, and that it may up my compression ration also, which is fine, but I dont want to be guessingat it.
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From: Troy,NY
Originally Posted by dtherren
I was wanting to compare these with a 302 to know if they were on a 2bbl or 4bbl engine for flow reasons. That is why I was wanting to know what they came off of. I found that they might be off a 70's mid size car, or a 60's Torino, Falcon, Fairlane, etc.
the D7 came off of a 77 302. The D8 came off a 78 302 or 351. That's all you can tell in the windsor family. They don't do different heads for 2v or 4v in those years.
I was told that they have bigger chambers (flow)than the 302, and that it may up my compression ration also, which is fine, but I dont want to be guessingat it.
the D7 came off of a 77 302. The D8 came off a 78 302 or 351. That's all you can tell in the windsor family. They don't do different heads for 2v or 4v in those years.
I was told that they have bigger chambers (flow)than the 302, and that it may up my compression ration also, which is fine, but I dont want to be guessingat it.
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From: south louisiana
D7OE and D8OE are the same heads with different casting numbers. The "O" in the casting number has nothing to do with identifying what vehicle they came from. It simply means they were originally designed for mid size Ford cars. That said, they could have been installed on any vehicle application using a 302 or 351W motor. They're really good door stops or boat anchors compared to any other Ford Small block head. Only ones worse were the early 80's 255 heads.
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