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Old Jul 22, 2011 | 06:26 PM
  #1  
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Talking its here its here!!

just wanted to share my excitement with you guys!! my offy dp intake came in the mail today!! now to order the hedmen headers and get all the needed parts and materials





 
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Old Jul 22, 2011 | 07:08 PM
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Very Nice! I have got to get one of those for my 300.
 
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Old Jul 22, 2011 | 07:21 PM
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Out of curiosity, why the DualPort and not the "C"?
And it would be kinda neat if Offy made a Port O Sonic for a 300
 
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Old Jul 22, 2011 | 07:23 PM
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Those sure do look pretty when they're all new.
 
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Old Jul 22, 2011 | 08:01 PM
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Originally Posted by AbandonedBronco
Those sure do look pretty when they're all new.
No doubt, take it and get it powder coated black while it's still brand new. Maybe take it to a local welder and have him fab a water plate for the bottom first and have them both powder coated. Then a quick wipe down will keep it looking good forever.

Now would be a good time to have a throttle cable mounting bracket fabbed up too.
 
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Old Jul 22, 2011 | 11:07 PM
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Originally Posted by nevrenufhp
Out of curiosity, why the DualPort and not the "C"?
And it would be kinda neat if Offy made a Port O Sonic for a 300
well the dp was a little easier on my wallet lol!

Originally Posted by AbandonedBronco
Those sure do look pretty when they're all new.
ab, it sure does man i kept taking it outta the box! i even showed my dad lol he was like your gonna need a better trans lol

Originally Posted by BaronVonAutomatc
No doubt, take it and get it powder coated black while it's still brand new. Maybe take it to a local welder and have him fab a water plate for the bottom first and have them both powder coated. Then a quick wipe down will keep it looking good forever.

Now would be a good time to have a throttle cable mounting bracket fabbed up too.

baron i took care of the throttle bracket already luckily i found this f100 v8 i didnt know what motor it had but the throttle looked like what i needed for it to work! Also, about the powder coat i think my brother girlfriend know how to do that! i hope he does!

once again tell me what you guys would have done if you had more time???

man fellas i cant wait to tear it down in the winter i could work at my own pace! i love it! ill be sure to make a thread
 
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Old Jul 23, 2011 | 10:43 AM
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It was suggested some time ago by a poster on the FSP Forum that it might be productive of good results to knife edge the port dividers and blend them back about 1/2" or so. I'm not sure what this would accomplish but I think it certainly wouldn't hurt and would have done it myself before installing on the motor.
 
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Old Jul 23, 2011 | 11:02 AM
  #8  
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Originally Posted by Harte3
It was suggested some time ago by a poster on the FSP Forum that it might be productive of good results to knife edge the port dividers and blend them back about 1/2" or so. I'm not sure what this would accomplish but I think it certainly wouldn't hurt and would have done it myself before installing on the motor.
I agree. Very good idea to do this. The divider serves a purpose, but there's no need for it to be that thick at the ends. I would think the knife edging and blending would reduce turbulence between the air coming from the runners suddenly meeting each other.

I also concur with the suggestion of adding some kind of finish to the intake before installing. The raw aluminum looks good now, but wait until after it has been under the hood for about a year or so, and it will not look quite so good. The surface is rather porous, so any fuel or oil that gets on it will leave a stain.
Painting it, even with a clear engine paint, will seal the surface and prevent the stains from becoming permenent.
I would likely paint it either the same color as the engine, or black, and then detail the various wording cast on it.
For example, I recently picked up a used performer 390 that had already been painted blue, so I used some emory cloth to "sand" off the paint on the words "Edelbrock" and "Performer 390". I will be doing the same to the valve covers where the "power by ford" is stamped, then using a paint marker to detail these areas.....
 
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Old Jul 23, 2011 | 02:17 PM
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I have taken the used mannies that were really dirty and just hit them with simple green and a wire brush. In half an hour I had a new-looking intake.

You do need the cooling plate for the bottom. Here is a pic.:



Use studs and crimp nuts, all grade 8, when you mount the intake. And use Mr.Gasket #260. Torque in increments in order, then heat, cool, retorque twice and forget about them. With the Headman header you need to think about your starter b/f install. Your starter will be locked into place once you install the header, so either put on a new starter now for longest life, or get a mini starter.
 
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Old Jul 27, 2011 | 05:47 PM
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i dont know if you have ordered the headman header yet but i have one and i feel its a waste of money, if i did it again i would get the efi dual exhaust manifold. the headman needed a few mods to fit, i had to use studs and nuts to get the damn thing to seal after it leaked after a few hours of running. i gained NO power and it gave it a raspy sound. best of luck and congrats on the intake, i need to get one myself
 
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Old Jul 27, 2011 | 06:03 PM
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Originally Posted by 1bad67sbf
i dont know if you have ordered the headman header yet but i have one and i feel its a waste of money, if i did it again i would get the efi dual exhaust manifold. the headman needed a few mods to fit, i had to use studs and nuts to get the damn thing to seal after it leaked after a few hours of running. i gained NO power and it gave it a raspy sound. best of luck and congrats on the intake, i need to get one myself
i think thats the problem you still got the little 1 barrel i assume, ive been on this subject with my self for quite a while if i should get headers or the efi mani's at one point i went to the j/y found a bunch of truck with them but idk i kinda wanted some thing different, but i know the problems they give i just love the look of them too. just out of curiousity what kinda exhaust did you have?
 
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Old Jul 27, 2011 | 08:26 PM
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i have the headman header with some cherry bombs and now have a custom flowmaster setup out the back welded in.
i am with you on the intake, thats why i want one but my outlook is if i gained nothing from it with the oem intake was it a good buy or not? its not like your putting a 750cfm + carb on it, i deal with almost all v8 motors and the airflow from a 300 does not seem to justify much over 600cfm carbs. stock EFI exhaust should flow that amount of air easy. just a thought
 
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Old Jul 27, 2011 | 09:22 PM
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HP is about breathing, air in, air out, a full cycle. If you help an engine to get more air/mix in, you have to help it get more air out, or your gains will be minimal. If you upgrade the exhaust, you have to upgrade the intake, or you don't maximize the potential. It is a complete cycle that is needed.

The Edelbrock 500 is a great carb for the 300 because it can easily be adjusted to work with any 300. Economy, however, is another matter.

"the airflow from a 300 does not seem to justify much over 600cfm carbs." I'm about to install a 750 cfm hp Quadrajet on my 300. The beauty of the Q.jet is that it doesn't allow more mix than the engine can use. Case in point: GM put them on everything from small v6's to 500 ci caddy engines. And what I like the most is that with its tiny primaries it produces great mpg, if you keep your foot out of the huge toilet flusher secondaries.

Another carb I liked for mpg was the Autolite 4100, the 1.08" verturi (480 cfm) from a 289. With it I averaged 16 mpg. The only draw back is that it is so long you need a C style manifold so the mix idle screws are not right on the valve cover, making them frustratingly difficult to adjust! But 16 mpg for a 1 ton truck, with 3.31 gears, on freeway, hills, and streets is pretty good.
 
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Old Jul 27, 2011 | 09:37 PM
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i understand that, what im saying is the max air intake from a carb 300 inline does not max the ability if the efi exhaust manifold
 
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Old Jul 27, 2011 | 09:54 PM
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Originally Posted by 1bad67sbf
i understand that, what im saying is the max air intake from a carb 300 inline does not max the ability if the efi exhaust manifold
You're absolutely correct. I wasn't disputing you, simply adding a bit about some carbs.
 
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