LS3 intake manifold search

So an exhaustive search has turned up nothing for an intake manifold for my LS3 Gen IV crate motor. I'm looking for either an individual runner injection (Hilborn trumpet style, even though it wouldn't be 100% correct) or Weber setup for my Can Am car. Since it sticks through the cowl and into the atmosphere for God and everyone to see, looks and originality are of import. I'm coming up with only a Kinsler or Hilborn which is not really correct for my car and quite literally will cost more than the motor. I love the look of the Hilborn and wouldn't be opposed to converting a used one from mechanical to electronic but there are no used manifolds to fit the heads of my motor out there as of now. At this point I'm stuck with running a four barrel with a scoop of some sort (?) or this...

STREETINDUCTION - Dummy Hilborn-Crower 8 Stack Fuel Injector Style Cover, Mounts over 4bbl Carburetor,

...which seems sacrilegious and is alarmingly expensive considering what it is. Might get me laughed off the track too. Any opinion or advice to a proper vendor is appreciated.
 
That's my set up. The manifolds are Enderle mechanical injection items for a 392 Hemi. They came with the long trumpets, which were simple to cut down. The LS engines and Hemi engines have similar port spacings, and the LS3 Chev engine has the benefit of similar shape ports too (The LS2 has cathedral shaped ports).

I designed and had the adapter plates cnc'd to suit the LS2, and everything bolts up nicely. An added bonus is that I get a slight inward angling of the stacks. I have a throttle position sensor connected to the right hand bank of throttles, and the adapter plates have been machined to accept my stock LS2 injectors, on an off-the-shelf fuel rail (right down low, on the valley cover).
 

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i got a pair of billet inlet manifolds from pierce for the ls motor which ive used with weber downdraughts - cant remember price but think it was reasonable - best pic ive got is here : F1-67 - Gallery
 
Thanks all, that gives me some more directions to look in.

Troy, I read your build cover to cover and forgot about your set up. What diameter are the throttle bodies and how are you finding it's performance and drivability? Part of me would really like that exact set up, with the raucous intake bells and the relative simplicity of injection.

Ian, in the end that may be just the ticket as my engine is set up for a carb from the folks at GM from the get go: http://www.gmperformanceparts.com/EngineShowcase/index.jsp?engId=CT525525&engine=CT 525 525&sku=88958605&engCat=racing

I suppose I'll need to commit to paper the cost/benefit and how I envision my project, and how far I'm willing to forego originality.

Edit: Here is a link for someone referencing this thread: http://www.piercemanifolds.com/

I found them but didn't see any v8 stuff. I'm going to call them.

Another one: http://imagineinjection.com/index.html
 
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Joe, internal diameter is 2-7/16" (62mm). Still in the build, but mine is intended for the track only.
Terry, I have the standard LS2 ECU from the car the engine came from (local GM product, 297kw from factory). These can be run MAFless, so will try that, otherwise will switch to Motec. The TPS is fitted to turn from the right hand bank of throttles.
 
I'm coming up with only a Kinsler or Hilborn which is not really correct for my car and quite literally will cost more than the motor. I love the look of the Hilborn and wouldn't be opposed to converting a used one from mechanical to electronic but there are no used manifolds to fit the heads of my motor out there as of now.
Hi, don't be put off by the pricing on the hilborn site - I purchased a 2 7/16 system complete with trumpets, linkages, TPS, injector rails etc about two years ago for my 434SBC and it was about $2700US. The prices they list are for all the fruit and ECU that you don't need. I'd be surprised if the equivalent LSX base system was much more than 3k.

Cheers, Andrew
 

Terry Oxandale

Skinny Man
Joe, internal diameter is 2-7/16" (62mm). Still in the build, but mine is intended for the track only.
Terry, I have the standard LS2 ECU from the car the engine came from (local GM product, 297kw from factory). These can be run MAFless, so will try that, otherwise will switch to Motec. The TPS is fitted to turn from the right hand bank of throttles.
Thanks. When I discussed this locally a couple of years ago, I was "convinced" to use the MEFI controls (used on earlier gen GM motors for marine applications with the ITB injection setup using MAP, rpm, TPS. I understood this to be better than the alpha-n, but not as good as MAF. Unfortunately, I don't know enough about this subject to verify or validate this.
 
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