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tc76 and 10bolt to S478 and 9", with results

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Old 09-22-2013, 05:07 PM
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Default tc76 and 10bolt to S478 and 9", with results
First graph is of the TC76, second is the S478, and third is the S478 more boost and timing
Attached Thumbnails tc76 and 10bolt to S478 and 9", with results-217.jpg   tc76 and 10bolt to S478 and 9", with results-216.jpg   tc76 and 10bolt to S478 and 9", with results-image.jpg  
Last edited by smooth01; 09-22-2013 at 05:39 PM.
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Old 09-22-2013, 05:50 PM
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Very nice. The 78mm S400-78 is a nice piece. We use them quite a bit.
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Old 09-22-2013, 05:56 PM
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That's a tribute to the borg warners. Extra 100hp in less favorable weather on the same boost...can't beat that
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Old 09-22-2013, 07:29 PM
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the motor is a forged 347, ported 317's, 227/223 cam, ls6 intake, stock tb, rebuilt t56
Attached Thumbnails tc76 and 10bolt to S478 and 9", with results-112.jpg   tc76 and 10bolt to S478 and 9", with results-087.jpg  
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Old 09-22-2013, 07:44 PM
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Anymore pics of your hotside?
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Old 09-22-2013, 09:27 PM
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Anymore pics of your hotside?
Attached Thumbnails tc76 and 10bolt to S478 and 9", with results-014.jpg   tc76 and 10bolt to S478 and 9", with results-016.jpg   tc76 and 10bolt to S478 and 9", with results-017.jpg   tc76 and 10bolt to S478 and 9", with results-018.jpg   tc76 and 10bolt to S478 and 9", with results-019.jpg  

tc76 and 10bolt to S478 and 9", with results-020.jpg   tc76 and 10bolt to S478 and 9", with results-015.jpg   tc76 and 10bolt to S478 and 9", with results-111.jpg  
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Old 09-23-2013, 03:14 AM
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What size turbine is on the new 78mm?
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Old 09-23-2013, 10:53 PM
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What size turbine is on the new 78mm?

83mm inducer,1.25 a/r
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Old 09-24-2013, 10:05 AM
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What was the timing difference between the last 2 runs with the S478?

Would it still make power to 7000 rpm?
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Old 09-24-2013, 06:47 PM
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Originally Posted by gnx7
What was the timing difference between the last 2 runs with the S478?

Would it still make power to 7000 rpm?
Every degree of timing was worth 30 HP until I reached 668hp, then I added another degree and it made 685hp, after that I added another degree and it made 686hp,so I took the degree back out. I tried adding more timing up top so it carry to 7000, but did really help at all, maybe I didn't add enough, or maybe something else is going on. Cam and springs should definitely make power to 6500
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Old 09-24-2013, 06:59 PM
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Smooth what final timing and AFR did you end up with? Nice engine!!
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Old 09-24-2013, 07:53 PM
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Originally Posted by 69-chvl
Smooth what final timing and AFR did you end up with? Nice engine!!
AFR is around .76 lambda, and 17 degrees of timing at 6000
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Old 09-25-2013, 11:14 AM
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E85, meth, etc??
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Old 09-25-2013, 08:48 PM
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Originally Posted by 69-chvl
E85, meth, etc??
93 pump gas, no meth
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Old 09-26-2013, 08:06 AM
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Those BW turbos are journal aren't they? If so, that kind of flow minus a couple hundred RPM for full boost would make a badass setup.

What is your compression?
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Old 09-26-2013, 08:27 AM
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Nice stuff. Turn it up though! That turbo isnt even getting started and your motor is forged!
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Old 09-26-2013, 10:24 AM
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Originally Posted by Exidous
Those BW turbos are journal aren't they? If so, that kind of flow minus a couple hundred RPM for full boost would make a badass setup.

What is your compression?
Yes, it is a journal bearing, the compression is 8.3:1
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Old 09-26-2013, 10:26 AM
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Originally Posted by Ryans99ls1
Nice stuff. Turn it up though! That turbo isnt even getting started and your motor is forged!
Running a 2 bar MAP sensor, I think its only good to a little over 14 psi, correct?
Last edited by smooth01; 09-26-2013 at 07:38 PM.
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Old 09-26-2013, 10:34 AM
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Originally Posted by Ryans99ls1
Nice stuff. Turn it up though! That turbo isnt even getting started and your motor is forged!
Yeah, if you turn the boost up it'll hold power higher into the RPMs. Engine shouldn't have any issue with that either. I tuned a 317-headed 5.3 with flat top pistons up to 18psi on 91 octane before it started picking up knock. Compression was just a hair over 9:1. That motor was nasty.
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Old 09-26-2013, 10:50 AM
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Originally Posted by smokeshow
Yeah, if you turn the boost up it'll hold power higher into the RPMs. Engine shouldn't have any issue with that either. I tuned a 317-headed 5.3 with flat top pistons up to 18psi on 91 octane before it started picking up knock. Compression was just a hair over 9:1. That motor was nasty.
Sounds good, I will have to pick up a 3 bar sensor later and turn up the wick
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