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Fuel pump block off plate?

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Old Mar 8, 2021 | 02:10 PM
  #1  
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Fuel pump block off plate?

Does anyone know if a 420/6.9 IDI can use a standard Ford big block fuel pump block off plate? NAPA has that but no info on fitment to an IDI.
 
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Old Mar 8, 2021 | 03:42 PM
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Iirc it's the 460 block off plate that fits
 
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Old Mar 8, 2021 | 03:44 PM
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Originally Posted by DarkOverCast
Iirc it's the 460 block off plate that fits
Use a BBC block off plate.
 
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Old Mar 8, 2021 | 09:37 PM
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I had a Mr.Gasket block off plate that leaked like crazy. Changed to a Spectre Performance 42473 and never had an issue. Sealed with the rightstuff, and I used a bunch of washers on my old bolts as the ones it came with seemed too short and I was worried I was gonna drop one inside.
 
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Old Mar 9, 2021 | 05:44 AM
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IIRC, you use a BBC plate and may need to grind one corner a little bit to make it sit flat. I used a gasket as a template to make one from some plate aluminum I had laying around.
 
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Old Mar 9, 2021 | 06:52 AM
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Originally Posted by ford390gashog
Use a BBC block off plate.
What's BBC?
 
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Old Mar 9, 2021 | 08:33 AM
  #7  
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Originally Posted by RenoHuskerDu
What's BBC?
Big Block Chevy
 
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Old Mar 9, 2021 | 11:32 AM
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What would happen if one were to simply leave the old pump in there? Asking for a friend.
 
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Old Mar 9, 2021 | 03:33 PM
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probably nothing maybe some oil leak if the pump was bad to begin with...I've seen a few that the owner removed the arm on the pump. Just saying
 
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Old Mar 9, 2021 | 03:54 PM
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When I tried the electric route thankfully I left the pump on because when the electric failed, I was able to hook it back up stock and make it home..
 
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Old Mar 11, 2021 | 05:30 PM
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Thanks guys I went with the Spectre Performance 42473 blockoff plate from Summit Racing that was recommended above.
 
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