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Old Apr 19, 2006 | 10:06 PM
  #1  
Bullride_101's Avatar
Bullride_101
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From: Medford, Oregon
Block Off Plate?

This may be a dumb question, but do I need to use a block off plate on my offy intake when I am using the EFI headers? I am pretty sure I do because the exhaust doesn't connect straight to the intake manifold anymore. Does anyone have a part number or a place where I can locate one? Thanks
 
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Old Apr 20, 2006 | 02:21 AM
  #2  
83Van's Avatar
83Van
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From: Nashville
No special block off plate is needed, the Offy intake just has two threaded holes for vacuum connections [brakes, tramsmission, whatever]. All you'll need is a pipe plug to seal off the EGR port on the rear EFI exhaust mainfold [get one at any hardware store]. You might need a couple of hose barbs to make the vacuum connections to the intake, or if you're not using them just plug with bolts.
 
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Old May 14, 2006 | 03:01 PM
  #3  
eric in iowa's Avatar
eric in iowa
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From: s.e.iowa
don't your also have to plug off the oxygen sensors too. where can you get 18mm by 1.5 threaded plugs for them? the egr port takes a standard 3/4 inch pipe plug after you unscrew the egr fitting
 
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Old May 16, 2006 | 07:05 PM
  #4  
eric in iowa's Avatar
eric in iowa
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From: s.e.iowa
after alot of looking around i found the18 by 1.5 threaded plug to plug the o2 sensors on the efi manifolds,
that I just installed on my 78 pickup, at my local muffler shop
 
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