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  3.1 intake on a 2.8?

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3.1 intake on a 2.8? by Jeckel
Started on: 05-20-2008 11:32 AM
Replies: 6
Last post by: linuxpowered88 on 05-21-2008 04:01 PM
Jeckel
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Report this Post05-20-2008 11:32 AM Click Here to See the Profile for JeckelClick Here to Email JeckelSend a Private Message to JeckelDirect Link to This Post
I have read different posts about using the stock fiero intake on a 3.1 engine. On the flip side, shouldn't you be able to use the 3.1 intake on a 2.8? Would there be any benefit in doing so?
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Arns85GT
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Report this Post05-20-2008 12:42 PM Click Here to See the Profile for Arns85GTClick Here to Email Arns85GTSend a Private Message to Arns85GTDirect Link to This Post
The 3.1's have aluminum heads. So, you need the whole top end, not just the intake. And, yes they breath a bit better, but not alot.

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Oreif
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Report this Post05-20-2008 12:46 PM Click Here to See the Profile for OreifClick Here to visit Oreif's HomePageClick Here to Email OreifSend a Private Message to OreifDirect Link to This Post
The minivan 3.1L had the iron heads, But the problem is they used DIS ignition. It won't fit because the intake will hit the distributor used on the Fiero 2.8L.
It has the same problem as the 3.4L intake used on the F-body. The intakes need to be modified to provide clearence around the distributor.

The aluminum headed 60* V-6 intakes are not interchangeable with the iron headed 60* V-6 intakes.

[This message has been edited by Oreif (edited 05-20-2008).]

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rjblaze
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Report this Post05-20-2008 12:53 PM Click Here to See the Profile for rjblazeClick Here to Email rjblazeSend a Private Message to rjblazeDirect Link to This Post
Interesting Oreif. Do you happen to have a picture of one of those? Would those be on an Astro?
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FieroFanatic13
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Report this Post05-20-2008 01:59 PM Click Here to See the Profile for FieroFanatic13Click Here to Email FieroFanatic13Send a Private Message to FieroFanatic13Direct Link to This Post
 
quote
Originally posted by Oreif:

The minivan 3.1L had the iron heads, But the problem is they used DIS ignition. It won't fit because the intake will hit the distributor used on the Fiero 2.8L.
It has the same problem as the 3.4L intake used on the F-body. The intakes need to be modified to provide clearence around the distributor.

The aluminum headed 60* V-6 intakes are not interchangeable with the iron headed 60* V-6 intakes.




Besides the DIS ignition, all of the minivan 3.1's I've seen have throttle body injection, not a multi-port set up like the car based 3.1's. I don't think the iron head 3.1's in the vans came with multi port or sequential set ups- BUT, the ones I've seen were mostly early APV and Transports...

[This message has been edited by FieroFanatic13 (edited 05-20-2008).]

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Jeckel
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Report this Post05-21-2008 01:43 PM Click Here to See the Profile for JeckelClick Here to Email JeckelSend a Private Message to JeckelDirect Link to This Post
 
quote
Originally posted by Oreif:

The intakes need to be modified to provide clearence around the distributor.



What types of mods would need to be done? I was thinking of lumina or barretta intakes.
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linuxpowered88
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Report this Post05-21-2008 04:01 PM Click Here to See the Profile for linuxpowered88Click Here to Email linuxpowered88Send a Private Message to linuxpowered88Direct Link to This Post
I think those are the aluminum heads 3.1 so you would need to swap heads. Might as well just swap the whole engine and ecm and such. Be about the same amount of work.
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