which intake is better - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-11-2004, 11:08 PM   #1
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Old 04-11-2004, 11:20 PM   #2
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The first is sold by a member here. It is a good angle if you do not have headlight washers, which I see by your cd you don't. Comes with a K&N.

The second I've seen a long time ago on cd, and is a decent angle for the larger washer fluid reservior. Comes with a generic filter, but a bit cheaper.

Either would probably do the same for you. Given the same price and no headlight washers, I'd pick the first. Your choice.
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Old 04-11-2004, 11:27 PM   #3
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The first one would be best suited to a SC L67 engine and the second one better for a NA engine.
You should opt for the first one.
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Old 04-12-2004, 12:33 AM   #4
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The 3" pipe benchflowed and dyno'd higher than 3.5" when ADTR was in development. I'd go 3". With that much air flowing, you need an accurate MAF reading for performance and efficiency. The 3" has a slight advantage on that score.
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Old 04-12-2004, 12:39 AM   #5
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but why is the one so much cheaper???? just cuz of the filter?
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Old 04-12-2004, 12:51 AM   #6
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The filter can be very expensive, or very cheap. Try the K&N RX4750 X-Stream. It has a hole for the IAT in the best possible location, and the 92-95 SSEi IAT harness will reach......IN the filter. You'll have to expand the hole.

That filter is also ideal for attaching a CAI or heatshield. I'd suggest buying a 3" intake pipe, then get the filter you want.
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Old 04-12-2004, 01:00 AM   #7
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Will, so you're saying that my intake will perform worse than a far more restrictive 3" on a Supercharged engine.
I'm sorry to disagree.


I can only understand this to be true with a normally aspirated engine that requires a higher intake velocity.IMHO.
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Old 04-12-2004, 01:04 AM   #8
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Bullet, you're an extreme case. Compare your mod list to his. He can't exhaust that much volume. You can. (I can't either).

The 3" pipe will provide more laminar flow by increasing the velocity. You can do the same thing with the 4" that you're running for several reasons. You have no bend in the pipe, so it'* more laminar, you are flowing more with your M90 and pulley, and you have the headers to get it out afterwards.

A 3.5" or 4" pipe will actually perform worse than a 3" on his car, but not yours.
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Old 04-12-2004, 01:10 AM   #9
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you guys are awesome....thanks
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Old 04-12-2004, 01:33 AM   #10
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Harofreak00 - by the pic you have in your profile of your speedo buried, it won't be long till you're modded like ours.
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