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Dorman ls6 intake 615-900

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Old 06-11-2015, 07:45 PM
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Mine showed up yesterday, took some cartridge rolls to it today. Pretty much same as sawblade99Z's intake. Took an hour to clean up all eight runners where the top and bottom meet, and remove the wedge - very simple. Took the snout to 75mm today, but will open it a bit more later on - just ran out of time. For the money, this is a steal. If you're willing to put an hour or so into it, I can almost guarantee it will crush the LS6. Big winner in my book.
Old 06-12-2015, 01:03 AM
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Originally Posted by DietCoke
Mine showed up yesterday, took some cartridge rolls to it today. Pretty much same as sawblade99Z's intake. Took an hour to clean up all eight runners where the top and bottom meet, and remove the wedge - very simple. Took the snout to 75mm today, but will open it a bit more later on - just ran out of time. For the money, this is a steal. If you're willing to put an hour or so into it, I can almost guarantee it will crush the LS6. Big winner in my book.
Cool! My build plans changed around the time I finished the TB inlet so it's not getting used this go around. I still plan to finish it like you did and slap it on a bolt-on build in the future. Post up some results when you get it installed. I'm curious to see how much minor work improves it on paper. Definitely can't argue the potential for the money and time invested!

Also, be wary of that bottom area on the inlet if you DO go bigger. I hit a pocket on the inner most part at 5 and 7 o clock. Not sure how detrimental it will be to flow, if at all. But heads up anyway.
Old 06-25-2015, 04:40 PM
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I should add it does come with button head bolts for the valley tray.
Old 06-26-2015, 10:51 AM
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Default Dorman ls6 intake 615-900

Originally Posted by DietCoke
I should add it does come with button head bolts for the valley tray.
That's right. When Mike (Dorman product manager for this manifold) and I discussed it I brought that up as a point and showed him a plethora of threads depicting the cracked lower shells on the manifolds from utilizing the stock bolts.

He jumped right on it and made it a point to include them in all future purchases.
Old 07-18-2015, 06:24 AM
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Any update on this topic? Is it agreed that this is at least equivalent with respect to the LS6 manifold when ported?
Old 07-18-2015, 07:59 AM
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anyone using this in a boosted application yet?
Old 07-18-2015, 01:32 PM
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Originally Posted by ITSWILL
Any update on this topic? Is it agreed that this is at least equivalent with respect to the LS6 manifold when ported?
There is absolutely no reason why it shouldn't be equal once it's had a few things fixed.
Old 07-18-2015, 01:33 PM
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Originally Posted by nobreaks254
anyone using this in a boosted application yet?
No one on here has actually put it to the test as far as I know, but you might have better luck asking this question on the Boosted LSX page on Facebook.
Old 07-29-2015, 04:41 PM
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I installed one on my Rx7 with 5.3 turbo setup last month. I only run 9psi right now, but plan to go up to 14psi in the next couple months. That may be much lower boost than what you are interested in hearing about.
Old 09-01-2015, 08:54 AM
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We currently have a LS2 manifold in development. We are looking for a STOCK LS2 vehicle to do a test fit on. Again The motor has to be a STOCK LS2 vehicle as this is an OEM replacement manifold. Does anyone have any contacts for a potential vehicle?
Old 09-01-2015, 10:34 AM
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Originally Posted by DormanIntake
We currently have a LS2 manifold in development. We are looking for a STOCK LS2 vehicle to do a test fit on. Again The motor has to be a STOCK LS2 vehicle as this is an OEM replacement manifold. Does anyone have any contacts for a potential vehicle?
What's the point when you can already pick up a LS2 for dirt cheap, and porting pretty much seems useless on it.
Old 09-01-2015, 10:42 AM
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Originally Posted by MonmouthCtyLS7
What's the point when you can already pick up a LS2 for dirt cheap, and porting pretty much seems useless on it.
Easy.

If they use the LS6 runners (key), and use the LS2 90mm snout and fuel rail... It's a no brainer really.
Old 09-01-2015, 10:43 AM
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Originally Posted by MonmouthCtyLS7
What's the point when you can already pick up a LS2 for dirt cheap, and porting pretty much seems useless on it.
It's meant as a replacement part, not a performance upgrade.

Some people just want to go to Autozone and get a part rather than comb ebay or forums for a used intake.
Old 09-01-2015, 10:53 AM
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+1

Definitely. Especially when we are talking about a (large) plastic engine component.

Originally Posted by thunderstruck507
It's meant as a replacement part, not a performance upgrade.

Some people just want to go to Autozone and get a part rather than comb ebay or forums for a used intake.
Old 09-01-2015, 10:54 AM
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Originally Posted by thunderstruck507
It's meant as a replacement part, not a performance upgrade.

Some people just want to go to Autozone and get a part rather than comb ebay or forums for a used intake.
Only thing I see coming from that is rising production/overhead costs and a lot of LS2 intakes hanging around.
Old 09-01-2015, 10:58 AM
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Not saying I disagree, but I haven't done market research or know what their development costs or product demands are. There might be more of a market than expected.
Old 09-01-2015, 11:02 AM
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Again, the LS2 runners are crap, with the LS6's being far superior. From my line of thinking, they'd want to use a single mold, which they already have; that being the LS6. Only mold change would be the upper shell to compensate for the 90mm opening and the fuel rail configuration.

Seems win win in my book. It's essentially a cheap TPIS 90mm LS6 at that point.
Old 09-01-2015, 11:30 AM
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Originally Posted by dr_whigham
Again, the LS2 runners are crap, with the LS6's being far superior. From my line of thinking, they'd want to use a single mold, which they already have; that being the LS6. Only mold change would be the upper shell to compensate for the 90mm opening and the fuel rail configuration.

Seems win win in my book. It's essentially a cheap TPIS 90mm LS6 at that point.
which would be ingenious if they can keep the costs somewhat low
Old 09-01-2015, 11:46 AM
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Originally Posted by thunderstruck507
Not saying I disagree, but I haven't done market research or know what their development costs or product demands are. There might be more of a market than expected.
Yup only one way to find out I guess.
Old 09-01-2015, 11:48 AM
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Originally Posted by dr_whigham
Again, the LS2 runners are crap, with the LS6's being far superior. From my line of thinking, they'd want to use a single mold, which they already have; that being the LS6. Only mold change would be the upper shell to compensate for the 90mm opening and the fuel rail configuration.

Seems win win in my book. It's essentially a cheap TPIS 90mm LS6 at that point.
Yeap they would sell a ton of those, because at the price they're at now you might as well go w/ the proven Fast.


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