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Using 2nd gen intake manifold on a 3rd gen......

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Old Mar 20, 2009 | 09:45 AM
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Using 2nd gen intake manifold on a 3rd gen......

Anyone doing this? I haven't heard of it but I have someone telling me it will flow a lot more than a stock 3rd gen unit.....
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Old Mar 20, 2009 | 10:08 AM
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Can't leave that thing stock for long eh?
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Old Mar 20, 2009 | 10:23 AM
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I'm all about really cheap and easy upgrades. You won't see me breaking the bank like I've done in the past though.....
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Old Mar 20, 2009 | 10:32 AM
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The inlet portion of the 2nd gen horn is at a different angle than the 3rd gen horns. You can cut the heads of both and weld the 3rd gen tail to the 2nd gen head to get the right angle. The 2nd gen horn will go on the truck, but the offset likely upsets the flow as much as the neck down in the 3rd gen heads.
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Old Mar 20, 2009 | 10:58 AM
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The guy is telling me that the 2nd gen manifold will flow 1/3 more air. I don't know. I've never read of anyone doing this. Maybe it's the next big mod we will all be doing soon.......
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Old Mar 20, 2009 | 11:37 AM
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Really the only thing a 2nd gen manifold will do for you is sound.
Actually makes the exhaust sound like a 24v exhaust note, instead of the ricerish 3rd gen tone...(in the lower rpms)
There are a few threads on what all is involved as well as a couple of videos of how it sounds on Cumminsforum....
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Old Mar 20, 2009 | 11:41 AM
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Originally Posted by Stacked97
Really the only thing a 2nd gen manifold will do for you is sound.
Actually makes the exhaust sound like a 24v exhaust note, instead of the ricerish 3rd gen tone...(in the lower rpms)
There are a few threads on what all is involved as well as a couple of videos of how it sounds on Cumminsforum....
No hes talking about the intake manifold. And yes it helps.
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Old Mar 20, 2009 | 12:31 PM
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So, you have seen this done Stainless?
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Old Mar 20, 2009 | 12:47 PM
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i got one, just dont have the bolts long enough to go through the 2nd gen manifold. It has been at the back of my mind for a while now.
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Old Mar 20, 2009 | 04:06 PM
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Originally Posted by Stainless
No hes talking about the intake manifold. And yes it helps.
Doh!

I just saw 2nd gen and manifold and ran with it

Disreguard my rambling
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Old Mar 20, 2009 | 05:20 PM
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Wink

I'm running the 2nd Gen intakes on my both my trucks. Nice upgrade that is a direct bolt on. You will need the 2 long bolts from the second gen also. When you look at the 2 intakes side by side it's a real eye opener.
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Old Mar 20, 2009 | 06:44 PM
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Originally Posted by Dodgezilla
So, you have seen this done Stainless?
Sure have, its only a mild gain though. Looking at them next to each other is unreal. Cummins really cut down flow on the 3rd gens.
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Old Mar 20, 2009 | 06:49 PM
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Well, this guy is looking to sell a manifold at a pretty good price. So I guess I need to tell him I only want it if it comes with the two longer bolts....
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Old Mar 20, 2009 | 08:00 PM
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Originally Posted by Dodgezilla
Well, this guy is looking to sell a manifold at a pretty good price. So I guess I need to tell him I only want it if it comes with the two longer bolts....
Let me know what you think of it.
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Old Mar 20, 2009 | 08:11 PM
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Anybody have the comparison pictures?
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