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6.0L SX400 Build

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Old Sep 29, 2012 | 06:38 AM
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Default 6.0L SX400 Build
For anyone interested, for my first foray into the LSx world, I built a iron block 6.0L, L92 headed combo with a 76 or 80mm BorgWarner SX400. It went into my 72 Nova, replacing a 491 nitrous BBC pump gas motor. Its first drive a few days after it ran in the car was a 2600 mile journey to run Hot Rod Drag Week a couple weeks ago. Miracuously it made the drive.

Here's a link to the short block build with the heads, turbo, and dyno coming the next month.

http://www.amosauto.com/Articles/Gm/Tech/na-psi-hp
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Old Sep 30, 2012 | 10:29 AM
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so what turbo is on it? 76 or 80mm?
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Old Sep 30, 2012 | 09:27 PM
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Originally Posted by overhere
so what turbo is on it? 76 or 80mm?
It's had both. I believe he ran the 80 during drag week, and I know he had the 76 on it last weekend.
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Old Oct 1, 2012 | 06:09 PM
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Yes, ran the 80 on drag week. Made 676 RWHP at 17 PSI. Ran the 76 on the engine dyno, made 800 at 17 PSI.

Ran the 76 at the track last weekend and didn't spool a bunch quicker with the 76, so the 80 will go back on and I'll work on tuning it to get boost quicker.

THe car averaged 9.79@140 on drag week, good enough for 2nd place. The car weighs 3850. If I can get it to leave, it should go 40's in good air. No record, but I'm pleased with it initially.
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Old Oct 1, 2012 | 07:05 PM
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did you ever measure back pressure with either turbo?
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Old Oct 1, 2012 | 07:10 PM
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good **** guys, theres a lot of good info in that article. you cant beat a bw s400 series turbo for the money. they prove themselves time and time again
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Old Oct 1, 2012 | 08:15 PM
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Originally Posted by overhere
did you ever measure back pressure with either turbo?
Have to go back in the logs to confirm, but about 28-29 PSI at 17 PSI of boost.
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Old Oct 1, 2012 | 08:19 PM
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sounds like a nice setup. congrats!

have the full specs on the turbo? im really torn on what turbo to run.
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Old Oct 2, 2012 | 09:15 AM
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What size turbine in the 80?
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Old Oct 2, 2012 | 06:44 PM
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The 76 is PN 179176
http://www.agpturbo.com/borg-warner-...ocharger-76mm/

The 80 is 179180
http://www.agpturbo.com/borg-warner-...w-billet-80mm/
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Old Oct 3, 2012 | 08:58 AM
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Originally Posted by SPRAYED 01
What size turbine in the 80?
Turbine is the J-wheel 87/81.
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Old Oct 3, 2012 | 01:26 PM
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Which turbo are the back pressure numbers from?
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Old Oct 28, 2013 | 01:20 PM
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So what's the end result :~) as far as everything lol!
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