OFFY INTAKE SET UP
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Freshman User
Joined: Mar 2013
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From: Rexburg
OFFY INTAKE SET UP
I'm getting ready to install an dp offy intake on my 84. also intalling the eft split manifold while i'm at it. My question is what are the 2 holes on the side wall under the carb mount on the intake? The ones that lead into the upper port?? I'm pretty sure i'm gonna have to plumb the heat plate too. Idaho winters can be a bit brutal. Any suggestions would be great. Like I said before. I can make this truck look pretty... but I'm gonna have a hard time making it run... 
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Joined: Dec 2007
Posts: 7,987
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From: Boise, Idaho
I'm assuming your talking about the two holes that stick off to the side? Those are for vacuum ports. You can put a tree into them to give you a number of different vacuum port sizes, or a large one for things like the brake booster and PCV. Or, if those are all taken care of, you can cap them off.
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Freshman User
Joined: Mar 2013
Posts: 38
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From: Rexburg
Thanks, AB. i was wrestling with that stupid thing all afternoon yesturday. Just got my eft split exhaust back from the sand blasters and I tried to fit everything up. So many things seem to be in the way with the 2 peice and the offy. Any special tips or tricks. And why the H*&L can't ford just use a bolt hole like everyone else? what's with the little tabs and gargantuan washer set up??? I've already trimmed some of the mounting tabs on the exhaust and i'm still having trouble getting it to sit right. 
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Joined: Dec 2007
Posts: 7,987
Likes: 104
From: Boise, Idaho
What's in the way? When I set mine up, I fit them together off the engine and saw what hit and what didn't. Remember that the 3 extra full eyelets on the EFI manifolds are NOT used on a carb head unless you have one of the rare late 86 carb'd heads that have all 16 bolt holes. Also, on mine, one of those eyelets needed to be completely removed.
And I agree, I wish they wouldn't have gone the tab setup. It can get rather frustrating.
And I agree, I wish they wouldn't have gone the tab setup. It can get rather frustrating.
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