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Old Nov 28, 2014 | 08:21 PM
  #41  
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Interesting....
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Old Nov 28, 2014 | 08:55 PM
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Wow. Looks like I opened a can of worms. I had no idea there would be this many comments on this thing!
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Old Nov 28, 2014 | 09:38 PM
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Originally Posted by ULTIMATEORANGESS
does it say anywhere how much power it makes over an ls6?
Why would they? Dorman isn't exactly a performance parts company, as long as the part fits, doesn't cause driveability problems, or turn on your SES light they're going to call it good enough. Our best hope for this intake is that the cheapest way for them to make it was to more or less copy a fast 78. Now if we're really lucky they'll make a LS2 replacement that is cheap copy of a FAST 90.
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Old Nov 29, 2014 | 11:26 AM
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Originally Posted by Fry_
Why would they? Dorman isn't exactly a performance parts company, as long as the part fits, doesn't cause driveability problems, or turn on your SES light they're going to call it good enough. Our best hope for this intake is that the cheapest way for them to make it was to more or less copy a fast 78. Now if we're really lucky they'll make a LS2 replacement that is cheap copy of a FAST 90.
it a performance part right? or at least thats what its supposed to do i assume?

im sure someone interested in it would like to know how much power its supposed to add with other proven options out here already.

so far i havent been convinced its a better alternative.
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Old Nov 29, 2014 | 12:10 PM
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I would like to know. I do not plan on buying this intake unless it is tested first.
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Old Nov 29, 2014 | 12:30 PM
  #46  
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its a replacement part for parts swapping repair shops, and driveway guys
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Old Nov 29, 2014 | 12:40 PM
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Originally Posted by ULTIMATEORANGESS
it a performance part right? or at least thats what its supposed to do i assume?

im sure someone interested in it would like to know how much power its supposed to add with other proven options out here already.

so far i havent been convinced its a better alternative.
No it's a replacement/ repair part. Dorman is a replacement part company, not a performance part company. We just have to hope they did a good enough job making it that its as good or better than a LS6. I'm not saying it wouldn't be smart for then to test it and advertise any gains I just wouldn't expect them to do it. It's obvious parts of it are copied from a FAST 78, so how good this intake is will depend on how much of it was copied and how well it's made.
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Old Nov 29, 2014 | 02:07 PM
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cool,i get it now.


its probably not something id go with but itll probably fit some peoples needs.
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Old Nov 29, 2014 | 02:56 PM
  #49  
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It's hard to say. If they also used the runners from the FAST 78/90 intake the lid/top looks close enough that it would have about the same plenum volume. That would make it a low cost copy of the old Fast 78, sure you can't easily open it to port it but for ~$325 to your door it's a way better deal than a used $350 LS6 that might need new gaskets, and if USPS crushes it getting a free replacement from RockAuto will be easier than getting one from some dude on Ebay or from the classifieds.

Hopefully we aren't getting excited over something that turns out to be a turd. I emailed Dorman asking about any dyno testing that may have been done when developing the manifold, and asked about any other details including if any other parts from the FAST 78 intake were used. I don't know if they'll respond with anything useful but we can hope.
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Old Nov 29, 2014 | 04:12 PM
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We can only hope so !
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Old Nov 29, 2014 | 11:08 PM
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Fry- keep us updated if they do respond please!
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Old Nov 29, 2014 | 11:30 PM
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This could get interesting
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Old Nov 30, 2014 | 12:18 AM
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Originally Posted by Fry_

I emailed Dorman asking about any dyno testing that may have been done when developing the manifold, and asked about any other details including if any other parts from the FAST 78 intake were used. I don't know if they'll respond with anything useful but we can hope.
I'm not 100% sure but I think Dorman buys most of what they sell from other manufacturers and suppliers. I do know that this is common practice in the auto industry.
If this is the case then they probably don't have that information, They only care if it meets factory replacement specifications.
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Old Nov 30, 2014 | 12:57 PM
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For all we know it's a FAST bottom, ls1 runners, and a top I can't even begin to... Whatever.

Hopefully they just bought the old mold from Comp/FAST and used it, but you never know.

As far as LS6 intakes price dropping, good luck. There's still a LOT of people that like the stock factory look. This intake isn't even in that category. Performance guys won't care, but that's even if this thing flows like an LS6 and not an LS1... Just bc its a "replacement" part doesn't mean it's made the same. Sure it'll work, as someone alluded to earlier, but for all you know you're buying a manifold the on par with the regular LS1
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Old Nov 30, 2014 | 03:15 PM
  #55  
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Originally Posted by studderin
edit, ya check out the summit pics, the lower shell, even still has the "rev J" in the casting and the paten number, that a fast had. haha
I see it... Wow.

U.S. Patent No. 7021263 B1

I think I'll just be calling Comp themselves tomorrow.

This is either going to end with good news, or a lawsuit
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Old Nov 30, 2014 | 04:05 PM
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so guys,based on what we've discovered so far. how much better is this over an ls1 and or ls6 manifold? any estimates?
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Old Nov 30, 2014 | 04:39 PM
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Fast bottom so far pretty much confirmed.. looking good maybe :p
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Old Nov 30, 2014 | 04:52 PM
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hopefully this works out well for the ls community

in for someone to buy this and test it.
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Old Dec 1, 2014 | 10:20 AM
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Just got off the horn with Comp (FAST)

Comp never "made" the LS 78/90 intakes. That was Wilson. Wilson had / has the molds. They very well may BE making these for Dorman.

Time to call Wilson Manifolds...

Oh, and they're "working" on an LSXRT for the LS3/L92 square ports...
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Old Dec 1, 2014 | 10:28 AM
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Wilson tells me they NEVER had anything to do with the 78/90 and they only make the 92. The guy on the phone though looked at the pics on summit and is just as curious as I am now.

This is getting weird...
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