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NEW! Summit Racing Pro LS Turbo Manifolds

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Old Jul 24, 2022 | 08:12 PM
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I install audio visual equipment for a living. Most folks don’t know that LG makes the glass for 99% of displays out there.
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Old Jul 24, 2022 | 08:49 PM
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And that Kodak likely makes 90% of all the film(s) used in just about everything with a camera. We could go on for a long time with this lol.
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Old Jul 25, 2022 | 08:44 AM
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See white-label products
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Old Jul 25, 2022 | 02:30 PM
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Originally Posted by skyhighsami
When will the crossover be available? Will it use the stock manifold or the Holley manifold?
We're a couple of months out on the crossovers being available. They will be 304 SS and are being designed to fit the driver's side truck manifolds.
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Old Sep 17, 2022 | 07:02 PM
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Do you have any dyno tests using this manifold and any pictures of these in a GMT800 engine bay? I'm curious how the wastegates are plumbed into the downpipe, and if there is any benefit to this manifold over an open T4 or T6 manifold.
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Old Sep 23, 2022 | 11:55 AM
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Originally Posted by skyhighsami
Do you have any dyno tests using this manifold and any pictures of these in a GMT800 engine bay? I'm curious how the wastegates are plumbed into the downpipe, and if there is any benefit to this manifold over an open T4 or T6 manifold.
We haven't done any dyno tests with this manifold yet and unfortunately no pics of one installed in a GMT800 truck.

As for the wastegates. The top gate could go directly into the downpipe. The front gate could be run under or to the passenger side of the compressor. However, care needs to be taken to avoid the oil lines.

The biggest benefit of our turbo manifold is the divided log with each bank having its own gate. This takes stress off the driver's side cylinders. They aren't being held up by the passenger side cylinders before hitting the gate. The result is a better balance across the cylinders and less stress. Another benefit is better spool. We used the T4 flange because it's compact but we have a variety of turbo flange adapters available.

We are working on a video of one of these manifolds mocked up on a test engine. We don't have that available yet but will get it posted here soon. However, you can check out some mockup pictures we did on a test engine in this thread on LS1Tech. There are also some pictures from a member with mockup pics in a G-body.

Hope this helps answer your questions. Let us know if we can be of any further assistance. We'll be happy to help!

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Old Sep 23, 2022 | 11:39 PM
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Originally Posted by Summitracing
We haven't done any dyno tests with this manifold yet and unfortunately no pics of one installed in a GMT800 truck.

Hope this helps answer your questions. Let us know if we can be of any further assistance. We'll be happy to help!
Is the test fitting done in Ohio?


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Old Sep 26, 2022 | 11:41 AM
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Originally Posted by 1FastBrick
Is the test fitting done in Ohio?
Yes, any testing or mockup that we do is primarily done at our Tallmadge, Ohio location.
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Old Oct 17, 2022 | 12:18 PM
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Will these clear the factory A/C compressor etc on GMT800 truck ?
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Old Oct 19, 2022 | 01:32 PM
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Originally Posted by aslack99
Will these clear the factory A/C compressor etc on GMT800 truck ?
Yes, they will clear the factory A/C compressor on a GMT800 truck.
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