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Old 03-26-2015, 12:28 AM   #1
VettezukiVettezuki is offline
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Default Theoretical Boost Question

I'm about 10.7CR now on my all aluminum LS motor. I have forged pistons and rods, high end fasteners all around, so even with the nodular crank, it should be able to handle 600+WHP all day long without breaking a sweat. I'd never even really want that in a street car honestly, but just curious, how many pounds of inter cooled boost from a centrifugal blower it would take with 91? I'm thinking not whole lot, maybe 6psi max.
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Old 03-26-2015, 07:56 AM   #2
Shaolin CraneShaolin Crane is offline
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You'll need more than 6 psi, have to account for power loss of the blower, even at the CR. Also I don't think you could/should run more than 6psi at that compression.

600hp is a hoot though.
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Old 04-02-2015, 08:45 PM   #3
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My motor runs about 6 pounds and it should be good up to about 10 ish with my CR of 10.5
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Old 04-02-2015, 11:35 PM   #4
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Thanks. At least for now, definitely going to keep it NA. If a proper exhaust and a retune gets me to a 420, and especially with more under the curve, not just peak, I think I'll be happy. It's fairly ridiculous for a streetcar as it is at 390WHP, 3,100lbs, and relatively short gearing.
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Old 04-06-2015, 08:53 PM   #5
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http://torcoracefuel.net/index.html And you'll be hood to go.
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Old 04-07-2015, 11:08 AM   #6
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Ran accelerator for years to move octane to about 93. My compression was about 11.2:1.
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Old 04-18-2015, 01:08 AM   #7
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ImageUploadedByTapatalk1429344287.478098.jpg

7lbs max intercooled G. And I melted a piston staying within their limits. Plus, it depends on the type of forging. 4032 forging isnt good enough for boost. You need the 2618.

Stick with a chemical supercharger for days when you want to tear it up in 3rd gear
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Old 04-20-2015, 08:22 AM   #8
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Chemical sc?
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Old 04-20-2015, 08:30 AM   #9
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Quote:
Originally Posted by Damian View Post
Chemical sc?
Giggle gas
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Old 06-04-2015, 02:46 AM   #10
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I was at 600rwhp with 7-8psi of boost on 91 with my ls3. Stock crank too, they'll handle 900 HP so don't worry. About 10.5cr here
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