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Just a Header Question.

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Old Apr 19, 2009 | 08:45 PM
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Just a Header Question.

After a few fruitless searches, I figured I'd ask this:

I'm looking for some new headers, and my cylinder heads have a "D" port on them. I've noticed a considerable price difference between standard port and "D" port headers. Is there or would there be any drawbacks to running standard port headers on the "D" port heads? I'm just trying to save a few bucks is all, any input I would appreciate. Thank you!
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Old Apr 22, 2009 | 12:07 AM
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From: Boosted Land
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Re: Just a Header Question.

Id like to know also... So TTT
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Old Apr 23, 2009 | 04:06 AM
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Transmission: 700R4
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Re: Just a Header Question.

haha That makes two of us :P
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Old Apr 23, 2009 | 03:04 PM
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Do you have access to a welder that can handle thin walls, and a die grinder?
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Old Apr 23, 2009 | 05:24 PM
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From: Northwestern Pennsylvania
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Axle/Gears: 4.10 Posi
Re: Just a Header Question.

Originally Posted by five7kid
Do you have access to a welder that can handle thin walls, and a die grinder?
Yes to both
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Old Apr 23, 2009 | 05:48 PM
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From: boise, ID
Car: 91 B4C "police special service"
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Re: Just a Header Question.

Originally Posted by five7kid
Do you have access to a welder that can handle thin walls, and a die grinder?
You can buy the cheaper round port headers, and modify them to fit the D port head better....(I believe five7kid was going to say same thing)...I did this on my headers and it lines up perfectly.....Also you CAN run round port headers (standard) on a D port head...just get a decent name brand gasket....it's not perfect, but I've run that setup on my other camaro for years.....
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Old Apr 23, 2009 | 06:45 PM
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Yes, I was going to say port match round port headers. If you just grind, you'll remove part of the weld that holds and seals the tube. By welding round the tube on the outside of the flange, you can then port match to the D-port. You may have to reweld a gasket seal bead on the inside surface of the flange, which means you'll also have to somehow get them all back to a flat plane afterward - a mongo belt sander works great for that.
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Old Apr 23, 2009 | 11:09 PM
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Re: Just a Header Question.

Ok, I'll give that a shot. Thank you both for the replies!
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